| 1 | /* Copyright (C) 2008 Ricardo Catalinas Jiménez <jimenezrick@gmail.com> |
| 2 | * |
| 3 | * This program is free software: you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation, either version 3 of the License, or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License |
| 14 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 15 | */ |
| 16 | |
| 17 | #include "fm.h" |
| 18 | |
| 19 | GNode *tree_root; |
| 20 | |
| 21 | void init_tree(char *name) |
| 22 | { |
| 23 | char *path; |
| 24 | |
| 25 | if (name != NULL) |
| 26 | tree_root = g_node_new(create_new_file(name, NULL, TRUE)); |
| 27 | else { |
| 28 | path = g_get_current_dir(); |
| 29 | tree_root = g_node_new(create_new_file(path, NULL, TRUE)); |
| 30 | free(path); |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | File *create_new_file(char *name, char *path, gboolean exit_on_error) |
| 35 | { |
| 36 | struct stat info, link_info; |
| 37 | File *file = malloc(sizeof(File)); |
| 38 | char *file_path; |
| 39 | |
| 40 | if (path != NULL) |
| 41 | file_path = g_strconcat(path, "/", name, NULL); |
| 42 | else |
| 43 | file_path = name; |
| 44 | |
| 45 | if (lstat(file_path, &link_info) == -1) { |
| 46 | if (exit_on_error) |
| 47 | PRINT_ERRNO_AND_EXIT(); |
| 48 | else { |
| 49 | /* Sometimes a file is created and then removed, this under Linux |
| 50 | * inotify events can create confusion because we try to stat a |
| 51 | * file that no longer exists. The file is removed before we can do |
| 52 | * the stat. So we ignore the errno and return NULL to take account |
| 53 | * of it. */ |
| 54 | |
| 55 | /* PRINT_ERRNO_INFO(); */ |
| 56 | free(file_path); |
| 57 | free(file); |
| 58 | |
| 59 | return NULL; |
| 60 | } |
| 61 | } else if (S_ISLNK(link_info.st_mode)) { |
| 62 | if (link_info.st_size == 0) |
| 63 | link_info.st_size = PATH_MAX; |
| 64 | |
| 65 | file->link_path = malloc(link_info.st_size + 1); |
| 66 | file->link_path[link_info.st_size] = '\0'; |
| 67 | file->link_path[0] = '\0'; |
| 68 | file->link = TRUE; |
| 69 | |
| 70 | if (readlink(file_path, file->link_path, link_info.st_size) == -1) |
| 71 | PRINT_ERRNO_INFO(); |
| 72 | } else { |
| 73 | file->link_path = NULL; |
| 74 | file->link = FALSE; |
| 75 | } |
| 76 | if (stat(file_path, &info) == -1) { |
| 77 | if (exit_on_error) |
| 78 | PRINT_ERRNO_AND_EXIT(); |
| 79 | else { |
| 80 | PRINT_ERRNO_INFO(); |
| 81 | file->type = file_type; |
| 82 | } |
| 83 | } else if (S_ISDIR(info.st_mode)) |
| 84 | file->type = directory_type; |
| 85 | else |
| 86 | file->type = file_type; |
| 87 | |
| 88 | if (file->link == TRUE) |
| 89 | file->info = link_info; |
| 90 | else |
| 91 | file->info = info; |
| 92 | |
| 93 | file->name = strdup(name); |
| 94 | file->read = FALSE; |
| 95 | file->open = FALSE; |
| 96 | file->show_dotfiles = FALSE; |
| 97 | file->line = NULL; |
| 98 | file->dotfiles = NULL; |
| 99 | file->watch = -1; |
| 100 | |
| 101 | if (path != NULL) |
| 102 | free(file_path); |
| 103 | |
| 104 | return file; |
| 105 | } |
| 106 | |
| 107 | gboolean read_directory(GNode *directory) |
| 108 | { |
| 109 | DIR *dir; |
| 110 | struct dirent *entry; |
| 111 | File *new_file; |
| 112 | char *path = get_path(directory); |
| 113 | int i; |
| 114 | |
| 115 | if ((dir = opendir(path)) == NULL) { |
| 116 | PRINT_ERRNO_INFO(); |
| 117 | return FALSE; |
| 118 | } |
| 119 | for (errno = 0, i = 0; (entry = readdir(dir)) != NULL; ) { |
| 120 | if (!strcmp(entry->d_name, ".") || !strcmp(entry->d_name, "..")) |
| 121 | continue; |
| 122 | |
| 123 | if ((new_file = create_new_file(entry->d_name, path, FALSE)) == NULL) |
| 124 | continue; |
| 125 | |
| 126 | if (new_file->name[0] == '.') { |
| 127 | insert_sorted_in_dotfiles(directory, new_file); |
| 128 | i = 1; |
| 129 | } else { |
| 130 | insert_sorted_in_tree(directory, new_file); |
| 131 | i = 1; |
| 132 | } |
| 133 | } |
| 134 | if (errno == EBADF) |
| 135 | PRINT_ERRNO_INFO(); |
| 136 | if (closedir(dir) == -1) |
| 137 | PRINT_ERRNO_INFO(); |
| 138 | free(path); |
| 139 | if (i > 0) { |
| 140 | FILE(directory)->read = TRUE; |
| 141 | #ifdef INOTIFY |
| 142 | add_watch_directory(directory); |
| 143 | #endif |
| 144 | return TRUE; |
| 145 | } |
| 146 | |
| 147 | return FALSE; |
| 148 | } |
| 149 | |
| 150 | void free_element_data(gpointer element_data, gpointer data) |
| 151 | { |
| 152 | if (FILE((GNode *) element_data)->type == directory_type) |
| 153 | destroy_directory_content((GNode *) element_data); |
| 154 | free_node_data((GNode *) element_data, NULL); |
| 155 | } |
| 156 | |
| 157 | void destroy_dotfiles(GList *dotfiles) |
| 158 | { |
| 159 | g_list_foreach(dotfiles, free_element_data, NULL); |
| 160 | g_list_free(dotfiles); |
| 161 | } |
| 162 | |
| 163 | gboolean free_node_data(GNode *node, gpointer data) |
| 164 | { |
| 165 | free(FILE(node)->name); |
| 166 | free(FILE(node)->link_path); |
| 167 | destroy_dotfiles(FILE(node)->dotfiles); |
| 168 | free(node->data); |
| 169 | |
| 170 | return FALSE; |
| 171 | } |
| 172 | |
| 173 | void destroy_directory_content(GNode *directory) |
| 174 | { |
| 175 | destroy_directory_content_real(directory, TRUE); |
| 176 | } |
| 177 | |
| 178 | void destroy_directory_content_real(GNode *directory, gboolean remove_watch) |
| 179 | { |
| 180 | GNode *file_ptr, *file_ptr2; |
| 181 | |
| 182 | #ifdef INOTIFY |
| 183 | if (FILE(directory)->read == TRUE) |
| 184 | remove_watch_directory(directory, remove_watch); |
| 185 | #endif |
| 186 | for (file_ptr = g_node_first_child(directory); file_ptr != NULL; ) { |
| 187 | file_ptr2 = file_ptr; |
| 188 | file_ptr = g_node_next_sibling(file_ptr); |
| 189 | |
| 190 | g_node_unlink(file_ptr2); |
| 191 | g_node_traverse(file_ptr2, G_PRE_ORDER, G_TRAVERSE_ALL, -1, free_node_data, NULL); |
| 192 | g_node_destroy(file_ptr2); |
| 193 | } |
| 194 | destroy_dotfiles(FILE(directory)->dotfiles); |
| 195 | FILE(directory)->dotfiles = NULL; |
| 196 | FILE(directory)->read = FALSE; |
| 197 | } |
| 198 | |
| 199 | void add_dotfiles(GNode *directory) |
| 200 | { |
| 201 | GList *line_ptr; |
| 202 | GNode *file_ptr; |
| 203 | int position; |
| 204 | |
| 205 | for (line_ptr = g_list_next(FILE(directory)->line), position = 0; |
| 206 | FILE(directory)->dotfiles != NULL; position++) { |
| 207 | file_ptr = NODE(FILE(directory)->dotfiles); |
| 208 | FILE(directory)->dotfiles = g_list_delete_link(FILE(directory)->dotfiles, |
| 209 | FILE(directory)->dotfiles); |
| 210 | g_node_insert(directory, position, file_ptr); |
| 211 | lines = g_list_insert_before(lines, line_ptr, file_ptr); |
| 212 | FILE(file_ptr)->line = g_list_previous(line_ptr); |
| 213 | if (FILE(file_ptr)->type == directory_type && FILE(file_ptr)->open == TRUE) |
| 214 | add_directory_content(file_ptr); |
| 215 | } |
| 216 | FILE(directory)->show_dotfiles = TRUE; |
| 217 | } |
| 218 | |
| 219 | void remove_dotfiles(GNode *directory) |
| 220 | { |
| 221 | GNode *file_ptr; |
| 222 | GList *line_ptr, *line_ptr_aux; |
| 223 | |
| 224 | for (file_ptr = g_node_first_child(directory); file_ptr != NULL && |
| 225 | FILE(file_ptr)->name[0] == '.'; ) { |
| 226 | lines = g_list_delete_link(lines, FILE(file_ptr)->line); |
| 227 | FILE(directory)->dotfiles = g_list_insert(FILE(directory)->dotfiles, file_ptr, -1); |
| 228 | FILE(file_ptr)->line = NULL; |
| 229 | file_ptr = g_node_next_sibling(file_ptr); |
| 230 | g_node_unlink(NODE(g_list_last(FILE(directory)->dotfiles))); |
| 231 | |
| 232 | for (line_ptr = g_list_previous(FILE(file_ptr)->line); |
| 233 | line_ptr != FILE(directory)->line; ) { |
| 234 | line_ptr_aux = line_ptr; |
| 235 | line_ptr = g_list_previous(line_ptr); |
| 236 | FILE(NODE(line_ptr_aux))->line = NULL; |
| 237 | lines = g_list_delete_link(lines, line_ptr_aux); |
| 238 | } |
| 239 | } |
| 240 | FILE(directory)->show_dotfiles = FALSE; |
| 241 | } |
| 242 | |
| 243 | int file_cmp(File *file1, File *file2) |
| 244 | { |
| 245 | if (file1->name[0] == '.' && file2->name[0] != '.') |
| 246 | return -1; |
| 247 | else if (file1->name[0] != '.' && file2->name[0] == '.') |
| 248 | return 1; |
| 249 | else if (file1->type == file2->type) |
| 250 | return strcmp(file1->name, file2->name); |
| 251 | else if (file1->type == directory_type) |
| 252 | return -1; |
| 253 | else |
| 254 | return 1; |
| 255 | } |
| 256 | |
| 257 | int file_cmp_list(gconstpointer file1, gconstpointer file2) |
| 258 | { |
| 259 | return file_cmp(FILE((GNode *) file1), FILE((GNode *) file2)); |
| 260 | } |
| 261 | |
| 262 | void insert_sorted_in_dotfiles(GNode *directory, File *file) |
| 263 | { |
| 264 | FILE(directory)->dotfiles = g_list_insert_sorted(FILE(directory)->dotfiles, |
| 265 | g_node_new(file), file_cmp_list); |
| 266 | } |
| 267 | |
| 268 | GNode *insert_sorted_in_tree(GNode *directory, File *file) |
| 269 | { |
| 270 | GNode *file_ptr, *new_file; |
| 271 | |
| 272 | if (G_NODE_IS_LEAF(directory)) { |
| 273 | g_node_append_data(directory, file); |
| 274 | return g_node_first_child(directory); |
| 275 | } else if (file_cmp(file, FILE(g_node_first_child(directory))) < 0) { |
| 276 | g_node_prepend_data(directory, file); |
| 277 | return g_node_first_child(directory); |
| 278 | } else { |
| 279 | for (file_ptr = g_node_last_child(directory); file_ptr != NULL; |
| 280 | file_ptr = g_node_prev_sibling(file_ptr)) { |
| 281 | if (file_cmp(file, FILE(file_ptr)) > 0) { |
| 282 | new_file = g_node_new(file); |
| 283 | g_node_insert_after(directory, file_ptr, new_file); |
| 284 | break; |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | return new_file; |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | char *get_path(GNode *file) |
| 293 | { |
| 294 | GNode *file_ptr; |
| 295 | GString *path = g_string_new(FILE(file)->name); |
| 296 | |
| 297 | for (file_ptr = file->parent; file_ptr != NULL; file_ptr = file_ptr->parent) { |
| 298 | g_string_prepend(path, "/"); |
| 299 | g_string_prepend(path, FILE(file_ptr)->name); |
| 300 | } |
| 301 | |
| 302 | return g_string_free(path, FALSE); |
| 303 | } |
| 304 | |
| 305 | GNode *get_next_file_real(GNode *file, gboolean go_deeper) |
| 306 | { |
| 307 | GNode *file_ptr, *directory_ptr; |
| 308 | |
| 309 | if (go_deeper && (file_ptr = g_node_first_child(file)) != NULL && FILE(file)->open == TRUE) |
| 310 | return file_ptr; |
| 311 | else if ((file_ptr = g_node_next_sibling(file)) != NULL) |
| 312 | return file_ptr; |
| 313 | else { |
| 314 | for (directory_ptr = file->parent; directory_ptr != NULL; |
| 315 | directory_ptr = directory_ptr->parent) { |
| 316 | if ((file_ptr = g_node_next_sibling(directory_ptr)) != NULL) |
| 317 | return file_ptr; |
| 318 | } |
| 319 | |
| 320 | return NULL; |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | GNode *get_previous_file(GNode *file) |
| 325 | { |
| 326 | GNode *file_ptr; |
| 327 | |
| 328 | if (G_NODE_IS_ROOT(file)) |
| 329 | return NULL; |
| 330 | else if (file == g_node_first_sibling(file)) |
| 331 | return file->parent; |
| 332 | else if (!G_NODE_IS_LEAF(file_ptr = g_node_prev_sibling(file)) && |
| 333 | FILE(file_ptr)->open == TRUE) { |
| 334 | do |
| 335 | file_ptr = g_node_last_child(file_ptr); |
| 336 | while (!G_NODE_IS_LEAF(file_ptr) && FILE(file_ptr)->open == TRUE); |
| 337 | return file_ptr; |
| 338 | } else |
| 339 | return file_ptr; |
| 340 | } |
| 341 | |
| 342 | GNode *get_next_file(GNode *file) |
| 343 | { |
| 344 | return get_next_file_real(file, TRUE); |
| 345 | } |
| 346 | |
| 347 | GNode *get_next_file_not_deepper(GNode *file) |
| 348 | { |
| 349 | return get_next_file_real(file, FALSE); |
| 350 | } |
| 351 | |
| 352 | char *get_file_info(GNode *file) |
| 353 | { |
| 354 | struct passwd *pw; |
| 355 | struct group *grp; |
| 356 | struct tm *mtime; |
| 357 | char mode[11], mtime_str[17], size_suffix; |
| 358 | double size; |
| 359 | |
| 360 | switch (FILE(file)->info.st_mode & S_IFMT) { |
| 361 | case S_IFSOCK: |
| 362 | mode[0] = 's'; |
| 363 | break; |
| 364 | case S_IFLNK: |
| 365 | mode[0] = 'l'; |
| 366 | break; |
| 367 | case S_IFREG: |
| 368 | mode[0] = '-'; |
| 369 | break; |
| 370 | case S_IFBLK: |
| 371 | mode[0] = 'b'; |
| 372 | break; |
| 373 | case S_IFDIR: |
| 374 | mode[0] = 'd'; |
| 375 | break; |
| 376 | case S_IFCHR: |
| 377 | mode[0] = 'c'; |
| 378 | break; |
| 379 | case S_IFIFO: |
| 380 | mode[0] = 'p'; |
| 381 | break; |
| 382 | } |
| 383 | mode[1] = (FILE(file)->info.st_mode & S_IRUSR) ? 'r' : '-'; |
| 384 | mode[2] = (FILE(file)->info.st_mode & S_IWUSR) ? 'w' : '-'; |
| 385 | mode[3] = (FILE(file)->info.st_mode & S_IXUSR) ? 'x' : '-'; |
| 386 | |
| 387 | mode[4] = (FILE(file)->info.st_mode & S_IRGRP) ? 'r' : '-'; |
| 388 | mode[5] = (FILE(file)->info.st_mode & S_IWGRP) ? 'w' : '-'; |
| 389 | mode[6] = (FILE(file)->info.st_mode & S_IXGRP) ? 'x' : '-'; |
| 390 | |
| 391 | mode[7] = (FILE(file)->info.st_mode & S_IROTH) ? 'r' : '-'; |
| 392 | mode[8] = (FILE(file)->info.st_mode & S_IWOTH) ? 'w' : '-'; |
| 393 | mode[9] = (FILE(file)->info.st_mode & S_IXOTH) ? 'x' : '-'; |
| 394 | mode[10] = '\0'; |
| 395 | |
| 396 | if (FILE(file)->info.st_mode & S_ISUID && mode[3] == 'x') |
| 397 | mode[9] = 's'; |
| 398 | else if (FILE(file)->info.st_mode & S_ISUID && mode[3] == '-') |
| 399 | mode[9] = 'S'; |
| 400 | if (FILE(file)->info.st_mode & S_ISGID && mode[6] == 'x') |
| 401 | mode[9] = 's'; |
| 402 | else if (FILE(file)->info.st_mode & S_ISGID && mode[6] == '-') |
| 403 | mode[9] = 'S'; |
| 404 | if (FILE(file)->info.st_mode & S_ISVTX && mode[9] == 'x') |
| 405 | mode[9] = 't'; |
| 406 | else if (FILE(file)->info.st_mode & S_ISVTX && mode[9] == '-') |
| 407 | mode[9] = 'T'; |
| 408 | |
| 409 | if ((pw = getpwuid(FILE(file)->info.st_uid)) == NULL) { |
| 410 | if (errno == 0) { |
| 411 | struct passwd pw_unknown; |
| 412 | |
| 413 | pw_unknown.pw_name = "unknown"; |
| 414 | pw = &pw_unknown; |
| 415 | } else { |
| 416 | PRINT_ERRNO_INFO(); |
| 417 | return NULL; |
| 418 | } |
| 419 | } if ((grp = getgrgid(FILE(file)->info.st_gid)) == NULL) { |
| 420 | if (errno == 0) { |
| 421 | struct group grp_unknown; |
| 422 | |
| 423 | grp_unknown.gr_name = "unknown"; |
| 424 | grp = &grp_unknown; |
| 425 | } else { |
| 426 | PRINT_ERRNO_INFO(); |
| 427 | return NULL; |
| 428 | } |
| 429 | } |
| 430 | |
| 431 | if ((size =(double) FILE(file)->info.st_size / (1024.0 * 1024.0 * 1024.0)) > 1.0) |
| 432 | size_suffix = 'G'; |
| 433 | else if ((size =(double) FILE(file)->info.st_size / (1024.0 * 1024.0)) > 1.0) |
| 434 | size_suffix = 'M'; |
| 435 | else if ((size =(double) FILE(file)->info.st_size / (1024.0)) > 1.0) |
| 436 | size_suffix = 'K'; |
| 437 | else { |
| 438 | size =(double) FILE(file)->info.st_size; |
| 439 | size_suffix = ' '; |
| 440 | } |
| 441 | |
| 442 | if ((mtime = localtime(&(FILE(file)->info.st_mtime))) == NULL) { |
| 443 | PRINT_ERRNO_INFO(); |
| 444 | return NULL; |
| 445 | } |
| 446 | if (strftime(mtime_str, sizeof(mtime_str), "%Y-%m-%d %H:%M", mtime) == 0) { |
| 447 | PRINT_ERRNO_INFO(); |
| 448 | return NULL; |
| 449 | } |
| 450 | |
| 451 | if (FILE(file)->link == TRUE) { |
| 452 | if (size_suffix == ' ') |
| 453 | return g_strdup_printf("%s %s %s %i %s %s -> %s", mode, pw->pw_name, grp->gr_name, |
| 454 | (int) size, mtime_str, FILE(file)->name, FILE(file)->link_path); |
| 455 | else |
| 456 | return g_strdup_printf("%s %s %s %.2f%c %s %s -> %s", mode, pw->pw_name, grp->gr_name, |
| 457 | size, size_suffix, mtime_str, FILE(file)->name, FILE(file)->link_path); |
| 458 | } else { |
| 459 | if (size_suffix == ' ') |
| 460 | return g_strdup_printf("%s %s %s %i %s %s", mode, pw->pw_name, grp->gr_name, |
| 461 | (int) size, mtime_str, FILE(file)->name); |
| 462 | else |
| 463 | return g_strdup_printf("%s %s %s %.2f%c %s %s", mode, pw->pw_name, grp->gr_name, |
| 464 | size, size_suffix, mtime_str, FILE(file)->name); |
| 465 | } |
| 466 | } |