src/vfs/sftpfs/sftpfs.c

src/vfs/sftpfs/sftpfs.c
/* */
This source file includes following definitions.
sftpfs_cb_init
sftpfs_cb_done
sftpfs_cb_open
sftpfs_cb_opendir
sftpfs_cb_readdir
sftpfs_cb_closedir
sftpfs_cb_lstat
sftpfs_cb_stat
sftpfs_cb_fstat
sftpfs_cb_readlink
sftpfs_cb_utime
sftpfs_cb_symlink
sftpfs_cb_mknod
sftpfs_cb_link
sftpfs_cb_chown
sftpfs_cb_read
sftpfs_cb_write
sftpfs_cb_close
sftpfs_cb_chmod
sftpfs_cb_mkdir
sftpfs_cb_rmdir
sftpfs_cb_lseek
sftpfs_cb_unlink
sftpfs_cb_rename
sftpfs_cb_errno
sftpfs_cb_fill_names
sftpfs_archive_same
sftpfs_new_archive
sftpfs_open_archive
sftpfs_free_archive
sftpfs_cb_dir_load
vfs_init_sftpfs
   1 /* Virtual File System: SFTP file system.
   2    The interface function
   3 
   4    Copyright (C) 2011-2024
   5    Free Software Foundation, Inc.
   6 
   7    Written by:
   8    Ilia Maslakov <il.smind@gmail.com>, 2011
   9    Slava Zanko <slavazanko@gmail.com>, 2011-2013
  10    Andrew Borodin <aborodin@vmail.ru>, 2021-2022
  11 
  12    This file is part of the Midnight Commander.
  13 
  14    The Midnight Commander is free software: you can redistribute it
  15    and/or modify it under the terms of the GNU General Public License as
  16    published by the Free Software Foundation, either version 3 of the License,
  17    or (at your option) any later version.
  18 
  19    The Midnight Commander is distributed in the hope that it will be useful,
  20    but WITHOUT ANY WARRANTY; without even the implied warranty of
  21    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22    GNU General Public License for more details.
  23 
  24    You should have received a copy of the GNU General Public License
  25    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  26  */
  27 
  28 #include <config.h>
  29 #include <errno.h>
  30 #include <stdlib.h>
  31 #include <string.h>             /* memset() */
  32 
  33 #include "lib/global.h"
  34 #include "lib/vfs/netutil.h"
  35 #include "lib/vfs/utilvfs.h"
  36 #include "lib/vfs/gc.h"
  37 #include "lib/widget.h"
  38 #include "lib/tty/tty.h"        /* tty_enable_interrupt_key () */
  39 
  40 #include "internal.h"
  41 
  42 #include "sftpfs.h"
  43 
  44 /*** global variables ****************************************************************************/
  45 
  46 struct vfs_s_subclass sftpfs_subclass;
  47 struct vfs_class *vfs_sftpfs_ops = VFS_CLASS (&sftpfs_subclass);        /* used in file.c */
  48 
  49 /*** file scope macro definitions ****************************************************************/
  50 
  51 /*** file scope type declarations ****************************************************************/
  52 
  53 /*** forward declarations (file scope functions) *************************************************/
  54 
  55 /*** file scope variables ************************************************************************/
  56 
  57 /* --------------------------------------------------------------------------------------------- */
  58 /*** file scope functions ************************************************************************/
  59 /* --------------------------------------------------------------------------------------------- */
  60 /**
  61  * Callback for VFS-class init action.
  62  *
  63  * @param me structure of VFS class
  64  */
  65 
  66 static int
  67 sftpfs_cb_init (struct vfs_class *me)
     /*   */
  68 {
  69     (void) me;
  70 
  71     if (libssh2_init (0) != 0)
  72         return 0;
  73 
  74     sftpfs_filename_buffer = g_string_new ("");
  75     sftpfs_init_config_variables_patterns ();
  76     return 1;
  77 }
  78 
  79 /* --------------------------------------------------------------------------------------------- */
  80 /**
  81  * Callback for VFS-class deinit action.
  82  *
  83  * @param me structure of VFS class
  84  */
  85 
  86 static void
  87 sftpfs_cb_done (struct vfs_class *me)
     /*   */
  88 {
  89     (void) me;
  90 
  91     sftpfs_deinit_config_variables_patterns ();
  92     g_string_free (sftpfs_filename_buffer, TRUE);
  93     libssh2_exit ();
  94 }
  95 
  96 /* --------------------------------------------------------------------------------------------- */
  97 /**
  98  * Callback for opening file.
  99  *
 100  * @param vpath path to file
 101  * @param flags flags (see man 2 open)
 102  * @param mode  mode (see man 2 open)
 103  * @return file data handler if success, NULL otherwise
 104  */
 105 
 106 static void *
 107 sftpfs_cb_open (const vfs_path_t *vpath, int flags, mode_t mode)
     /*   */
 108 {
 109     vfs_file_handler_t *fh;
 110     struct vfs_class *me;
 111     struct vfs_s_super *super;
 112     const char *path_super;
 113     struct vfs_s_inode *path_inode;
 114     GError *mcerror = NULL;
 115     gboolean is_changed = FALSE;
 116 
 117     path_super = vfs_s_get_path (vpath, &super, 0);
 118     if (path_super == NULL)
 119         return NULL;
 120 
 121     me = VFS_CLASS (vfs_path_get_last_path_vfs (vpath));
 122 
 123     path_inode = vfs_s_find_inode (me, super, path_super, LINK_FOLLOW, FL_NONE);
 124     if (path_inode != NULL && ((flags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL)))
 125     {
 126         me->verrno = EEXIST;
 127         return NULL;
 128     }
 129 
 130     if (path_inode == NULL)
 131     {
 132         char *name;
 133         struct vfs_s_entry *ent;
 134         struct vfs_s_inode *dir;
 135 
 136         name = g_path_get_dirname (path_super);
 137         dir = vfs_s_find_inode (me, super, name, LINK_FOLLOW, FL_DIR);
 138         g_free (name);
 139         if (dir == NULL)
 140             return NULL;
 141 
 142         name = g_path_get_basename (path_super);
 143         ent = vfs_s_generate_entry (me, name, dir, 0755);
 144         g_free (name);
 145         path_inode = ent->ino;
 146         vfs_s_insert_entry (me, dir, ent);
 147         is_changed = TRUE;
 148     }
 149 
 150     if (S_ISDIR (path_inode->st.st_mode))
 151     {
 152         me->verrno = EISDIR;
 153         return NULL;
 154     }
 155 
 156     fh = sftpfs_fh_new (path_inode, is_changed);
 157 
 158     if (!sftpfs_open_file (fh, flags, mode, &mcerror))
 159     {
 160         mc_error_message (&mcerror, NULL);
 161         g_free (fh);
 162         return NULL;
 163     }
 164 
 165     vfs_rmstamp (me, (vfsid) super);
 166     super->fd_usage++;
 167     fh->ino->st.st_nlink++;
 168     return fh;
 169 }
 170 
 171 /* --------------------------------------------------------------------------------------------- */
 172 /**
 173  * Callback for opening directory.
 174  *
 175  * @param vpath path to directory
 176  * @return directory data handler if success, NULL otherwise
 177  */
 178 
 179 static void *
 180 sftpfs_cb_opendir (const vfs_path_t *vpath)
     /*   */
 181 {
 182     GError *mcerror = NULL;
 183     void *ret_value;
 184 
 185     /* reset interrupt flag */
 186     tty_got_interrupt ();
 187 
 188     ret_value = sftpfs_opendir (vpath, &mcerror);
 189     mc_error_message (&mcerror, NULL);
 190     return ret_value;
 191 }
 192 
 193 /* --------------------------------------------------------------------------------------------- */
 194 /**
 195  * Callback for reading directory entry.
 196  *
 197  * @param data directory data handler
 198  * @return information about direntry if success, NULL otherwise
 199  */
 200 
 201 static struct vfs_dirent *
 202 sftpfs_cb_readdir (void *data)
     /*   */
 203 {
 204     GError *mcerror = NULL;
 205     struct vfs_dirent *sftpfs_dirent;
 206 
 207     if (tty_got_interrupt ())
 208     {
 209         tty_disable_interrupt_key ();
 210         return NULL;
 211     }
 212 
 213     sftpfs_dirent = sftpfs_readdir (data, &mcerror);
 214     if (!mc_error_message (&mcerror, NULL))
 215     {
 216         if (sftpfs_dirent != NULL)
 217             vfs_print_message (_("sftp: (Ctrl-G break) Listing... %s"), sftpfs_dirent->d_name);
 218         else
 219             vfs_print_message ("%s", _("sftp: Listing done."));
 220     }
 221 
 222     return sftpfs_dirent;
 223 }
 224 
 225 /* --------------------------------------------------------------------------------------------- */
 226 /**
 227  * Callback for closing directory.
 228  *
 229  * @param data directory data handler
 230  * @return 0 if success, negative value otherwise
 231  */
 232 
 233 static int
 234 sftpfs_cb_closedir (void *data)
     /*   */
 235 {
 236     int rc;
 237     GError *mcerror = NULL;
 238 
 239     rc = sftpfs_closedir (data, &mcerror);
 240     mc_error_message (&mcerror, NULL);
 241     return rc;
 242 }
 243 
 244 /* --------------------------------------------------------------------------------------------- */
 245 /**
 246  * Callback for lstat VFS-function.
 247  *
 248  * @param vpath path to file or directory
 249  * @param buf   buffer for store stat-info
 250  * @return 0 if success, negative value otherwise
 251  */
 252 
 253 static int
 254 sftpfs_cb_lstat (const vfs_path_t *vpath, struct stat *buf)
     /*   */
 255 {
 256     int rc;
 257     GError *mcerror = NULL;
 258 
 259     rc = sftpfs_lstat (vpath, buf, &mcerror);
 260     mc_error_message (&mcerror, NULL);
 261     return rc;
 262 }
 263 
 264 /* --------------------------------------------------------------------------------------------- */
 265 /**
 266  * Callback for stat VFS-function.
 267  *
 268  * @param vpath path to file or directory
 269  * @param buf   buffer for store stat-info
 270  * @return 0 if success, negative value otherwise
 271  */
 272 
 273 static int
 274 sftpfs_cb_stat (const vfs_path_t *vpath, struct stat *buf)
     /*   */
 275 {
 276     int rc;
 277     GError *mcerror = NULL;
 278 
 279     rc = sftpfs_stat (vpath, buf, &mcerror);
 280     mc_error_message (&mcerror, NULL);
 281     return rc;
 282 }
 283 
 284 /* --------------------------------------------------------------------------------------------- */
 285 /**
 286  * Callback for fstat VFS-function.
 287  *
 288  * @param data file data handler
 289  * @param buf  buffer for store stat-info
 290  * @return 0 if success, negative value otherwise
 291  */
 292 
 293 static int
 294 sftpfs_cb_fstat (void *data, struct stat *buf)
     /*   */
 295 {
 296     int rc;
 297     GError *mcerror = NULL;
 298 
 299     rc = sftpfs_fstat (data, buf, &mcerror);
 300     mc_error_message (&mcerror, NULL);
 301     return rc;
 302 }
 303 
 304 /* --------------------------------------------------------------------------------------------- */
 305 /**
 306  * Callback for readlink VFS-function.
 307  *
 308  * @param vpath path to file or directory
 309  * @param buf   buffer for store stat-info
 310  * @param size  buffer size
 311  * @return 0 if success, negative value otherwise
 312  */
 313 
 314 static int
 315 sftpfs_cb_readlink (const vfs_path_t *vpath, char *buf, size_t size)
     /*   */
 316 {
 317     int rc;
 318     GError *mcerror = NULL;
 319 
 320     rc = sftpfs_readlink (vpath, buf, size, &mcerror);
 321     mc_error_message (&mcerror, NULL);
 322     return rc;
 323 }
 324 
 325 /* --------------------------------------------------------------------------------------------- */
 326 /**
 327  * Callback for utime VFS-function.
 328  *
 329  * @param vpath path to file or directory
 330  * @param times access and modification time to set
 331  * @return 0 if success, negative value otherwise
 332  */
 333 
 334 static int
 335 sftpfs_cb_utime (const vfs_path_t *vpath, mc_timesbuf_t *times)
     /*   */
 336 {
 337     int rc;
 338     GError *mcerror = NULL;
 339     mc_timespec_t atime, mtime;
 340 
 341     vfs_get_timespecs_from_timesbuf (times, &atime, &mtime);
 342     rc = sftpfs_utime (vpath, atime.tv_sec, mtime.tv_sec, &mcerror);
 343 
 344     mc_error_message (&mcerror, NULL);
 345     return rc;
 346 }
 347 
 348 /* --------------------------------------------------------------------------------------------- */
 349 /**
 350  * Callback for symlink VFS-function.
 351  *
 352  * @param vpath1 path to file or directory
 353  * @param vpath2 path to symlink
 354  * @return 0 if success, negative value otherwise
 355  */
 356 
 357 static int
 358 sftpfs_cb_symlink (const vfs_path_t *vpath1, const vfs_path_t *vpath2)
     /*   */
 359 {
 360     int rc;
 361     GError *mcerror = NULL;
 362 
 363     rc = sftpfs_symlink (vpath1, vpath2, &mcerror);
 364     mc_error_message (&mcerror, NULL);
 365     return rc;
 366 }
 367 
 368 /* --------------------------------------------------------------------------------------------- */
 369 /**
 370  * Callback for symlink VFS-function.
 371  *
 372  * @param vpath unused
 373  * @param mode  unused
 374  * @param dev   unused
 375  * @return always 0
 376  */
 377 
 378 static int
 379 sftpfs_cb_mknod (const vfs_path_t *vpath, mode_t mode, dev_t dev)
     /*   */
 380 {
 381     (void) vpath;
 382     (void) mode;
 383     (void) dev;
 384 
 385     return 0;
 386 }
 387 
 388 /* --------------------------------------------------------------------------------------------- */
 389 /**
 390  * Callback for link VFS-function.
 391  *
 392  * @param vpath1 unused
 393  * @param vpath2 unused
 394  * @return always 0
 395  */
 396 
 397 static int
 398 sftpfs_cb_link (const vfs_path_t *vpath1, const vfs_path_t *vpath2)
     /*   */
 399 {
 400     (void) vpath1;
 401     (void) vpath2;
 402 
 403     return 0;
 404 }
 405 
 406 /* --------------------------------------------------------------------------------------------- */
 407 /**
 408  * Callback for chown VFS-function.
 409  *
 410  * @param vpath unused
 411  * @param owner unused
 412  * @param group unused
 413  * @return always 0
 414  */
 415 
 416 static int
 417 sftpfs_cb_chown (const vfs_path_t *vpath, uid_t owner, gid_t group)
     /*   */
 418 {
 419     (void) vpath;
 420     (void) owner;
 421     (void) group;
 422 
 423     return 0;
 424 }
 425 
 426 /* --------------------------------------------------------------------------------------------- */
 427 /**
 428  * Callback for reading file content.
 429  *
 430  * @param data   file data handler
 431  * @param buffer buffer for data
 432  * @param count  data size
 433  * @return 0 if success, negative value otherwise
 434  */
 435 
 436 static ssize_t
 437 sftpfs_cb_read (void *data, char *buffer, size_t count)
     /*   */
 438 {
 439     int rc;
 440     GError *mcerror = NULL;
 441     vfs_file_handler_t *fh = VFS_FILE_HANDLER (data);
 442 
 443     if (tty_got_interrupt ())
 444     {
 445         tty_disable_interrupt_key ();
 446         return 0;
 447     }
 448 
 449     rc = sftpfs_read_file (fh, buffer, count, &mcerror);
 450     mc_error_message (&mcerror, NULL);
 451     return rc;
 452 }
 453 
 454 /* --------------------------------------------------------------------------------------------- */
 455 /**
 456  * Callback for writing file content.
 457  *
 458  * @param data  file data handler
 459  * @param buf   buffer for data
 460  * @param count data size
 461  * @return 0 if success, negative value otherwise
 462  */
 463 
 464 static ssize_t
 465 sftpfs_cb_write (void *data, const char *buf, size_t nbyte)
     /*   */
 466 {
 467     int rc;
 468     GError *mcerror = NULL;
 469     vfs_file_handler_t *fh = VFS_FILE_HANDLER (data);
 470 
 471     rc = sftpfs_write_file (fh, buf, nbyte, &mcerror);
 472     mc_error_message (&mcerror, NULL);
 473     return rc;
 474 }
 475 
 476 /* --------------------------------------------------------------------------------------------- */
 477 /**
 478  * Callback for close file.
 479  *
 480  * @param data file data handler
 481  * @return 0 if success, negative value otherwise
 482  */
 483 
 484 static int
 485 sftpfs_cb_close (void *data)
     /*   */
 486 {
 487     int rc;
 488     GError *mcerror = NULL;
 489     struct vfs_s_super *super = VFS_FILE_HANDLER_SUPER (data);
 490     vfs_file_handler_t *fh = VFS_FILE_HANDLER (data);
 491 
 492     super->fd_usage--;
 493     if (super->fd_usage == 0)
 494         vfs_stamp_create (vfs_sftpfs_ops, super);
 495 
 496     rc = sftpfs_close_file (fh, &mcerror);
 497     mc_error_message (&mcerror, NULL);
 498 
 499     if (fh->handle != -1)
 500         close (fh->handle);
 501 
 502     vfs_s_free_inode (vfs_sftpfs_ops, fh->ino);
 503 
 504     return rc;
 505 }
 506 
 507 /* --------------------------------------------------------------------------------------------- */
 508 /**
 509  * Callback for chmod VFS-function.
 510  *
 511  * @param vpath path to file or directory
 512  * @param mode  mode (see man 2 open)
 513  * @return 0 if success, negative value otherwise
 514  */
 515 
 516 static int
 517 sftpfs_cb_chmod (const vfs_path_t *vpath, mode_t mode)
     /*   */
 518 {
 519     int rc;
 520     GError *mcerror = NULL;
 521 
 522     rc = sftpfs_chmod (vpath, mode, &mcerror);
 523     mc_error_message (&mcerror, NULL);
 524     return rc;
 525 }
 526 
 527 /* --------------------------------------------------------------------------------------------- */
 528 /**
 529  * Callback for mkdir VFS-function.
 530  *
 531  * @param vpath path directory
 532  * @param mode  mode (see man 2 open)
 533  * @return 0 if success, negative value otherwise
 534  */
 535 
 536 static int
 537 sftpfs_cb_mkdir (const vfs_path_t *vpath, mode_t mode)
     /*   */
 538 {
 539     int rc;
 540     GError *mcerror = NULL;
 541 
 542     rc = sftpfs_mkdir (vpath, mode, &mcerror);
 543     mc_error_message (&mcerror, NULL);
 544     return rc;
 545 }
 546 
 547 /* --------------------------------------------------------------------------------------------- */
 548 /**
 549  * Callback for rmdir VFS-function.
 550  *
 551  * @param vpath path directory
 552  * @return 0 if success, negative value otherwise
 553  */
 554 
 555 static int
 556 sftpfs_cb_rmdir (const vfs_path_t *vpath)
     /*   */
 557 {
 558     int rc;
 559     GError *mcerror = NULL;
 560 
 561     rc = sftpfs_rmdir (vpath, &mcerror);
 562     mc_error_message (&mcerror, NULL);
 563     return rc;
 564 }
 565 
 566 /* --------------------------------------------------------------------------------------------- */
 567 /**
 568  * Callback for lseek VFS-function.
 569  *
 570  * @param data   file data handler
 571  * @param offset file offset
 572  * @param whence method of seek (at begin, at current, at end)
 573  * @return 0 if success, negative value otherwise
 574  */
 575 
 576 static off_t
 577 sftpfs_cb_lseek (void *data, off_t offset, int whence)
     /*   */
 578 {
 579     off_t ret_offset;
 580     vfs_file_handler_t *fh = VFS_FILE_HANDLER (data);
 581     GError *mcerror = NULL;
 582 
 583     ret_offset = sftpfs_lseek (fh, offset, whence, &mcerror);
 584     mc_error_message (&mcerror, NULL);
 585     return ret_offset;
 586 }
 587 
 588 /* --------------------------------------------------------------------------------------------- */
 589 /**
 590  * Callback for unlink VFS-function.
 591  *
 592  * @param vpath path to file or directory
 593  * @return 0 if success, negative value otherwise
 594  */
 595 
 596 static int
 597 sftpfs_cb_unlink (const vfs_path_t *vpath)
     /*   */
 598 {
 599     int rc;
 600     GError *mcerror = NULL;
 601 
 602     rc = sftpfs_unlink (vpath, &mcerror);
 603     mc_error_message (&mcerror, NULL);
 604     return rc;
 605 }
 606 
 607 /* --------------------------------------------------------------------------------------------- */
 608 /**
 609  * Callback for rename VFS-function.
 610  *
 611  * @param vpath1 path to source file or directory
 612  * @param vpath2 path to destination file or directory
 613  * @return 0 if success, negative value otherwise
 614  */
 615 
 616 static int
 617 sftpfs_cb_rename (const vfs_path_t *vpath1, const vfs_path_t *vpath2)
     /*   */
 618 {
 619     int rc;
 620     GError *mcerror = NULL;
 621 
 622     rc = sftpfs_rename (vpath1, vpath2, &mcerror);
 623     mc_error_message (&mcerror, NULL);
 624     return rc;
 625 }
 626 
 627 /* --------------------------------------------------------------------------------------------- */
 628 /**
 629  * Callback for errno VFS-function.
 630  *
 631  * @param me unused
 632  * @return value of errno global variable
 633  */
 634 
 635 static int
 636 sftpfs_cb_errno (struct vfs_class *me)
     /*   */
 637 {
 638     (void) me;
 639 
 640     return errno;
 641 }
 642 
 643 /* --------------------------------------------------------------------------------------------- */
 644 /**
 645  * Callback for fill_names VFS function.
 646  * Add SFTP connections to the 'Active VFS connections'  list
 647  *
 648  * @param me   unused
 649  * @param func callback function for adding SFTP-connection to list of active connections
 650  */
 651 
 652 static void
 653 sftpfs_cb_fill_names (struct vfs_class *me, fill_names_f func)
     /*   */
 654 {
 655     GList *iter;
 656 
 657     (void) me;
 658 
 659     for (iter = sftpfs_subclass.supers; iter != NULL; iter = g_list_next (iter))
 660     {
 661         const struct vfs_s_super *super = (const struct vfs_s_super *) iter->data;
 662         GString *name;
 663 
 664         name = vfs_path_element_build_pretty_path_str (super->path_element);
 665 
 666         func (name->str);
 667         g_string_free (name, TRUE);
 668     }
 669 }
 670 
 671 /* --------------------------------------------------------------------------------------------- */
 672 /**
 673  * Callback for checking if connection is equal to existing connection.
 674  *
 675  * @param vpath_element path element with connection data
 676  * @param super         data with exists connection
 677  * @param vpath         unused
 678  * @param cookie        unused
 679  * @return TRUE if connections is equal, FALSE otherwise
 680  */
 681 
 682 static gboolean
 683 sftpfs_archive_same (const vfs_path_element_t *vpath_element, struct vfs_s_super *super,
     /*   */
 684                      const vfs_path_t *vpath, void *cookie)
 685 {
 686     int result;
 687     vfs_path_element_t *orig_connect_info;
 688 
 689     (void) vpath;
 690     (void) cookie;
 691 
 692     orig_connect_info = SFTP_SUPER (super)->original_connection_info;
 693 
 694     result = ((g_strcmp0 (vpath_element->host, orig_connect_info->host) == 0)
 695               && (g_strcmp0 (vpath_element->user, orig_connect_info->user) == 0)
 696               && (vpath_element->port == orig_connect_info->port));
 697 
 698     return result;
 699 }
 700 
 701 /* --------------------------------------------------------------------------------------------- */
 702 
 703 static struct vfs_s_super *
 704 sftpfs_new_archive (struct vfs_class *me)
     /*   */
 705 {
 706     sftpfs_super_t *arch;
 707 
 708     arch = g_new0 (sftpfs_super_t, 1);
 709     arch->base.me = me;
 710     arch->base.name = g_strdup (PATH_SEP_STR);
 711     arch->auth_type = NONE;
 712     arch->config_auth_type = NONE;
 713     arch->socket_handle = LIBSSH2_INVALID_SOCKET;
 714 
 715     return VFS_SUPER (arch);
 716 }
 717 
 718 /* --------------------------------------------------------------------------------------------- */
 719 /**
 720  * Callback for opening new connection.
 721  *
 722  * @param super         connection data
 723  * @param vpath         unused
 724  * @param vpath_element path element with connection data
 725  * @return 0 if success, -1 otherwise
 726  */
 727 
 728 static int
 729 sftpfs_open_archive (struct vfs_s_super *super, const vfs_path_t *vpath,
     /*   */
 730                      const vfs_path_element_t *vpath_element)
 731 {
 732     GError *mcerror = NULL;
 733     sftpfs_super_t *sftpfs_super = SFTP_SUPER (super);
 734     int ret_value;
 735 
 736     (void) vpath;
 737 
 738     if (vpath_element->host == NULL || *vpath_element->host == '\0')
 739     {
 740         vfs_print_message ("%s", _("sftp: Invalid host name."));
 741         vpath_element->class->verrno = EPERM;
 742         return -1;
 743     }
 744 
 745     sftpfs_super->original_connection_info = vfs_path_element_clone (vpath_element);
 746     super->path_element = vfs_path_element_clone (vpath_element);
 747 
 748     sftpfs_fill_connection_data_from_config (super, &mcerror);
 749     if (mc_error_message (&mcerror, &ret_value))
 750     {
 751         vpath_element->class->verrno = ret_value;
 752         return -1;
 753     }
 754 
 755     super->root =
 756         vfs_s_new_inode (vpath_element->class, super,
 757                          vfs_s_default_stat (vpath_element->class, S_IFDIR | 0755));
 758 
 759     ret_value = sftpfs_open_connection (super, &mcerror);
 760     mc_error_message (&mcerror, NULL);
 761     return ret_value;
 762 }
 763 
 764 /* --------------------------------------------------------------------------------------------- */
 765 /**
 766  * Callback for closing connection.
 767  *
 768  * @param me    unused
 769  * @param super connection data
 770  */
 771 
 772 static void
 773 sftpfs_free_archive (struct vfs_class *me, struct vfs_s_super *super)
     /*   */
 774 {
 775     GError *mcerror = NULL;
 776 
 777     (void) me;
 778 
 779     sftpfs_close_connection (super, "Normal Shutdown", &mcerror);
 780 
 781     vfs_path_element_free (SFTP_SUPER (super)->original_connection_info);
 782 
 783     mc_error_message (&mcerror, NULL);
 784 }
 785 
 786 /* --------------------------------------------------------------------------------------------- */
 787 /**
 788  * Callback for getting directory content.
 789  *
 790  * @param me          unused
 791  * @param dir         unused
 792  * @param remote_path unused
 793  * @return always 0
 794  */
 795 
 796 static int
 797 sftpfs_cb_dir_load (struct vfs_class *me, struct vfs_s_inode *dir, const char *remote_path)
     /*   */
 798 {
 799     (void) me;
 800     (void) dir;
 801     (void) remote_path;
 802 
 803     return 0;
 804 }
 805 
 806 /* --------------------------------------------------------------------------------------------- */
 807 /*** public functions ****************************************************************************/
 808 /* --------------------------------------------------------------------------------------------- */
 809 /**
 810  * Initialization of SFTP Virtual File Sysytem.
 811  */
 812 
 813 void
 814 vfs_init_sftpfs (void)
     /*   */
 815 {
 816     tcp_init ();
 817 
 818     vfs_init_subclass (&sftpfs_subclass, "sftpfs", VFSF_NOLINKS | VFSF_REMOTE, "sftp");
 819 
 820     vfs_sftpfs_ops->init = sftpfs_cb_init;
 821     vfs_sftpfs_ops->done = sftpfs_cb_done;
 822 
 823     vfs_sftpfs_ops->fill_names = sftpfs_cb_fill_names;
 824 
 825     vfs_sftpfs_ops->opendir = sftpfs_cb_opendir;
 826     vfs_sftpfs_ops->readdir = sftpfs_cb_readdir;
 827     vfs_sftpfs_ops->closedir = sftpfs_cb_closedir;
 828     vfs_sftpfs_ops->mkdir = sftpfs_cb_mkdir;
 829     vfs_sftpfs_ops->rmdir = sftpfs_cb_rmdir;
 830 
 831     vfs_sftpfs_ops->stat = sftpfs_cb_stat;
 832     vfs_sftpfs_ops->lstat = sftpfs_cb_lstat;
 833     vfs_sftpfs_ops->fstat = sftpfs_cb_fstat;
 834     vfs_sftpfs_ops->readlink = sftpfs_cb_readlink;
 835     vfs_sftpfs_ops->symlink = sftpfs_cb_symlink;
 836     vfs_sftpfs_ops->link = sftpfs_cb_link;
 837     vfs_sftpfs_ops->utime = sftpfs_cb_utime;
 838     vfs_sftpfs_ops->mknod = sftpfs_cb_mknod;
 839     vfs_sftpfs_ops->chown = sftpfs_cb_chown;
 840     vfs_sftpfs_ops->chmod = sftpfs_cb_chmod;
 841 
 842     vfs_sftpfs_ops->open = sftpfs_cb_open;
 843     vfs_sftpfs_ops->read = sftpfs_cb_read;
 844     vfs_sftpfs_ops->write = sftpfs_cb_write;
 845     vfs_sftpfs_ops->close = sftpfs_cb_close;
 846     vfs_sftpfs_ops->lseek = sftpfs_cb_lseek;
 847     vfs_sftpfs_ops->unlink = sftpfs_cb_unlink;
 848     vfs_sftpfs_ops->rename = sftpfs_cb_rename;
 849     vfs_sftpfs_ops->ferrno = sftpfs_cb_errno;
 850 
 851     sftpfs_subclass.archive_same = sftpfs_archive_same;
 852     sftpfs_subclass.new_archive = sftpfs_new_archive;
 853     sftpfs_subclass.open_archive = sftpfs_open_archive;
 854     sftpfs_subclass.free_archive = sftpfs_free_archive;
 855     sftpfs_subclass.fh_new = sftpfs_fh_new;
 856     sftpfs_subclass.dir_load = sftpfs_cb_dir_load;
 857 
 858     vfs_register_class (vfs_sftpfs_ops);
 859 }
 860 
 861 /* --------------------------------------------------------------------------------------------- */
/* */
root/src/vfs/sftpfs/sftpfs.c

DEFINITIONS
