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vfs_s_subclass::linear_read: return ssize_t instead of int.
[midnight-commander.git] / src / vfs / fish / fish.c
blob5c466d5afd4e48dee5f78490a3d5477e7090bc69
1 /*
2 Virtual File System: FISH implementation for transfering files over
3 shell connections.
4
5 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
6 2007, 2008, 2009, 2010, 2011
7 The Free Software Foundation, Inc.
8
9 Written by:
10 Pavel Machek, 1998
11 Michal Svec, 2000
12 Andrew Borodin <aborodin@vmail.ru>, 2010
13 Slava Zanko <slavazanko@gmail.com>, 2010
14 Ilia Maslakov <il.smind@gmail.com>, 2010
15
16 Derived from ftpfs.c.
17
18 This file is part of the Midnight Commander.
19
20 The Midnight Commander is free software: you can redistribute it
21 and/or modify it under the terms of the GNU General Public License as
22 published by the Free Software Foundation, either version 3 of the License,
23 or (at your option) any later version.
24
25 The Midnight Commander is distributed in the hope that it will be useful,
26 but WITHOUT ANY WARRANTY; without even the implied warranty of
27 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28 GNU General Public License for more details.
29
30 You should have received a copy of the GNU General Public License
31 along with this program. If not, see <http://www.gnu.org/licenses/>.
32 */
33
34 /**
35 * \file
36 * \brief Source: Virtual File System: FISH implementation for transfering files over
37 * shell connections
38 * \author Pavel Machek
39 * \author Michal Svec
40 * \date 1998, 2000
41 *
42 * Derived from ftpfs.c
43 * Read README.fish for protocol specification.
44 *
45 * Syntax of path is: \verbatim sh://user@host[:Cr]/path \endverbatim
46 * where C means you want compressed connection,
47 * and r means you want to use rsh
48 *
49 * Namespace: fish_vfs_ops exported.
50 */
51
52 /* Define this if your ssh can take -I option */
53
54 #include <config.h>
55 #include <errno.h>
56 #include <fcntl.h>
57 #include <pwd.h>
58 #include <grp.h>
59 #include <sys/time.h> /* gettimeofday() */
60 #include <stdlib.h>
61 #include <string.h>
62 #include <inttypes.h> /* uintmax_t */
63
64 #include "lib/global.h"
65 #include "lib/tty/tty.h" /* enable/disable interrupt key */
66 #include "lib/strescape.h"
67 #include "lib/unixcompat.h"
68 #include "lib/fileloc.h"
69 #include "lib/mcconfig.h"
70
71 #include "src/execute.h" /* pre_exec, post_exec */
72
73 #include "lib/vfs/vfs.h"
74 #include "lib/vfs/utilvfs.h"
75 #include "lib/vfs/netutil.h"
76 #include "lib/vfs/xdirentry.h"
77 #include "lib/vfs/gc.h" /* vfs_stamp_create */
78
79 #include "fish.h"
80 #include "fishdef.h"
81
82 /*** global variables ****************************************************************************/
83
84 int fish_directory_timeout = 900;
85
86 /*** file scope macro definitions ****************************************************************/
87
88 #define DO_RESOLVE_SYMLINK 1
89 #define DO_OPEN 2
90 #define DO_FREE_RESOURCE 4
91
92 #define FISH_FLAG_COMPRESSED 1
93 #define FISH_FLAG_RSH 2
94
95 #define OPT_FLUSH 1
96 #define OPT_IGNORE_ERROR 2
97
98 /*
99 * Reply codes.
100 */
101 #define PRELIM 1 /* positive preliminary */
102 #define COMPLETE 2 /* positive completion */
103 #define CONTINUE 3 /* positive intermediate */
104 #define TRANSIENT 4 /* transient negative completion */
105 #define ERROR 5 /* permanent negative completion */
106
107 /* command wait_flag: */
108 #define NONE 0x00
109 #define WAIT_REPLY 0x01
110 #define WANT_STRING 0x02
111
112 /* environment flags */
113 #define FISH_HAVE_HEAD 1
114 #define FISH_HAVE_SED 2
115 #define FISH_HAVE_AWK 4
116 #define FISH_HAVE_PERL 8
117 #define FISH_HAVE_LSQ 16
118 #define FISH_HAVE_DATE_MDYT 32
119 #define FISH_HAVE_TAIL 64
120
121 #define SUP ((fish_super_data_t *) super->data)
122
123 /*** file scope type declarations ****************************************************************/
124
125 typedef struct
126 {
127 int sockr;
128 int sockw;
129 char *scr_ls;
130 char *scr_chmod;
131 char *scr_utime;
132 char *scr_exists;
133 char *scr_mkdir;
134 char *scr_unlink;
135 char *scr_chown;
136 char *scr_rmdir;
137 char *scr_ln;
138 char *scr_mv;
139 char *scr_hardlink;
140 char *scr_get;
141 char *scr_send;
142 char *scr_append;
143 char *scr_info;
144 int host_flags;
145 char *scr_env;
146 } fish_super_data_t;
147
148 typedef struct
149 {
150 off_t got;
151 off_t total;
152 gboolean append;
153 } fish_fh_data_t;
154
155 /*** file scope variables ************************************************************************/
156
157 static char reply_str[80];
158
159 static struct vfs_class vfs_fish_ops;
160
161 /*** file scope functions ************************************************************************/
162 /* --------------------------------------------------------------------------------------------- */
163
164 static char *
165 fish_load_script_from_file (const char *hostname, const char *script_name, const char *def_content)
166 {
167 char *scr_filename = NULL;
168 char *scr_content;
169 gsize scr_len = 0;
170
171 /* 1st: scan user directory */
172 scr_filename = g_build_path (PATH_SEP_STR, mc_config_get_data_path (), FISH_PREFIX, hostname,
173 script_name, (char *) NULL);
174 /* silent about user dir */
175 g_file_get_contents (scr_filename, &scr_content, &scr_len, NULL);
176 g_free (scr_filename);
177 /* 2nd: scan system dir */
178 if (scr_content == NULL)
179 {
180 scr_filename =
181 g_build_path (PATH_SEP_STR, LIBEXECDIR, FISH_PREFIX, script_name, (char *) NULL);
182 g_file_get_contents (scr_filename, &scr_content, &scr_len, NULL);
183 g_free (scr_filename);
184 }
185
186 if (scr_content != NULL)
187 return scr_content;
188
189 return g_strdup (def_content);
190 }
191
192 /* --------------------------------------------------------------------------------------------- */
193
194 static int
195 fish_decode_reply (char *s, int was_garbage)
196 {
197 int code;
198 if (!sscanf (s, "%d", &code))
199 {
200 code = 500;
201 return 5;
202 }
203 if (code < 100)
204 return was_garbage ? ERROR : (!code ? COMPLETE : PRELIM);
205 return code / 100;
206 }
207
208 /* --------------------------------------------------------------------------------------------- */
209 /* Returns a reply code, check /usr/include/arpa/ftp.h for possible values */
210
211 static int
212 fish_get_reply (struct vfs_class *me, int sock, char *string_buf, int string_len)
213 {
214 char answer[BUF_1K];
215 int was_garbage = 0;
216
217 for (;;)
218 {
219 if (!vfs_s_get_line (me, sock, answer, sizeof (answer), '\n'))
220 {
221 if (string_buf)
222 *string_buf = 0;
223 return 4;
224 }
225
226 if (strncmp (answer, "### ", 4))
227 {
228 was_garbage = 1;
229 if (string_buf)
230 g_strlcpy (string_buf, answer, string_len);
231 }
232 else
233 return fish_decode_reply (answer + 4, was_garbage);
234 }
235 }
236
237 /* --------------------------------------------------------------------------------------------- */
238
239 static int
240 fish_command (struct vfs_class *me, struct vfs_s_super *super, int wait_reply, const char *fmt, ...)
241 {
242 va_list ap;
243 char *str;
244 ssize_t status;
245 FILE *logfile = MEDATA->logfile;
246
247 va_start (ap, fmt);
248
249 str = g_strdup_vprintf (fmt, ap);
250 va_end (ap);
251
252 if (logfile)
253 {
254 size_t ret;
255 ret = fwrite (str, strlen (str), 1, logfile);
256 ret = fflush (logfile);
257 }
258
259 tty_enable_interrupt_key ();
260
261 status = write (SUP->sockw, str, strlen (str));
262 g_free (str);
263
264 tty_disable_interrupt_key ();
265 if (status < 0)
266 return TRANSIENT;
267
268 if (wait_reply)
269 return fish_get_reply (me, SUP->sockr,
270 (wait_reply & WANT_STRING) ? reply_str :
271 NULL, sizeof (reply_str) - 1);
272 return COMPLETE;
273 }
274
275 /* --------------------------------------------------------------------------------------------- */
276
277 static void
278 fish_free_archive (struct vfs_class *me, struct vfs_s_super *super)
279 {
280 if ((SUP->sockw != -1) || (SUP->sockr != -1))
281 {
282 vfs_print_message (_("fish: Disconnecting from %s"), super->name ? super->name : "???");
283 fish_command (me, super, NONE, "#BYE\nexit\n");
284 close (SUP->sockw);
285 close (SUP->sockr);
286 SUP->sockw = SUP->sockr = -1;
287 }
288 g_free (SUP->scr_ls);
289 g_free (SUP->scr_exists);
290 g_free (SUP->scr_mkdir);
291 g_free (SUP->scr_unlink);
292 g_free (SUP->scr_chown);
293 g_free (SUP->scr_chmod);
294 g_free (SUP->scr_utime);
295 g_free (SUP->scr_rmdir);
296 g_free (SUP->scr_ln);
297 g_free (SUP->scr_mv);
298 g_free (SUP->scr_hardlink);
299 g_free (SUP->scr_get);
300 g_free (SUP->scr_send);
301 g_free (SUP->scr_append);
302 g_free (SUP->scr_info);
303 g_free (SUP->scr_env);
304 g_free (SUP);
305 super->data = NULL;
306 }
307
308 /* --------------------------------------------------------------------------------------------- */
309
310 static void
311 fish_pipeopen (struct vfs_s_super *super, const char *path, const char *argv[])
312 {
313 int fileset1[2], fileset2[2];
314 int res;
315
316 if ((pipe (fileset1) < 0) || (pipe (fileset2) < 0))
317 vfs_die ("Cannot pipe(): %m.");
318
319 res = fork ();
320
321 if (res != 0)
322 {
323 if (res < 0)
324 vfs_die ("Cannot fork(): %m.");
325 /* We are the parent */
326 close (fileset1[0]);
327 SUP->sockw = fileset1[1];
328 close (fileset2[1]);
329 SUP->sockr = fileset2[0];
330 }
331 else
332 {
333 res = dup2 (fileset1[0], 0);
334 close (fileset1[0]);
335 close (fileset1[1]);
336 res = dup2 (fileset2[1], 1);
337 close (2);
338 /* stderr to /dev/null */
339 res = open ("/dev/null", O_WRONLY);
340 close (fileset2[0]);
341 close (fileset2[1]);
342 execvp (path, const_cast (char **, argv));
343 _exit (3);
344 }
345 }
346
347 /* --------------------------------------------------------------------------------------------- */
348
349 static char *
350 fish_set_env (int flags)
351 {
352 GString *tmp;
353
354 tmp = g_string_sized_new (250);
355 g_string_assign (tmp, "");
356
357 if ((flags & FISH_HAVE_HEAD) != 0)
358 g_string_append (tmp, "FISH_HAVE_HEAD=1 export FISH_HAVE_HEAD; ");
359
360 if ((flags & FISH_HAVE_SED) != 0)
361 g_string_append (tmp, "FISH_HAVE_SED=1 export FISH_HAVE_SED; ");
362
363 if ((flags & FISH_HAVE_AWK) != 0)
364 g_string_append (tmp, "FISH_HAVE_AWK=1 export FISH_HAVE_AWK; ");
365
366 if ((flags & FISH_HAVE_PERL) != 0)
367 g_string_append (tmp, "FISH_HAVE_PERL=1 export FISH_HAVE_PERL; ");
368
369 if ((flags & FISH_HAVE_LSQ) != 0)
370 g_string_append (tmp, "FISH_HAVE_LSQ=1 export FISH_HAVE_LSQ; ");
371
372 if ((flags & FISH_HAVE_DATE_MDYT) != 0)
373 g_string_append (tmp, "FISH_HAVE_DATE_MDYT=1 export FISH_HAVE_DATE_MDYT; ");
374
375 if ((flags & FISH_HAVE_TAIL) != 0)
376 g_string_append (tmp, "FISH_HAVE_TAIL=1 export FISH_HAVE_TAIL; ");
377
378 return g_string_free (tmp, FALSE);
379 }
380
381 /* --------------------------------------------------------------------------------------------- */
382
383 static gboolean
384 fish_info (struct vfs_class *me, struct vfs_s_super *super)
385 {
386 char buffer[BUF_8K];
387 if (fish_command (me, super, NONE, SUP->scr_info) == COMPLETE)
388 {
389 while (TRUE)
390 {
391 int res;
392
393 res = vfs_s_get_line_interruptible (me, buffer, sizeof (buffer), SUP->sockr);
394 if ((res == 0) || (res == EINTR))
395 ERRNOR (ECONNRESET, FALSE);
396 if (strncmp (buffer, "### ", 4) == 0)
397 break;
398 SUP->host_flags = atol (buffer);
399 }
400 return TRUE;
401 }
402 ERRNOR (E_PROTO, FALSE);
403 }
404
405
406 /* --------------------------------------------------------------------------------------------- */
407
408 static void
409 fish_open_archive_pipeopen (struct vfs_s_super *super)
410 {
411 char gbuf[10];
412 const char *argv[10]; /* All of 10 is used now */
413 const char *xsh = (super->path_element->port == FISH_FLAG_RSH ? "rsh" : "ssh");
414 int i = 0;
415
416 argv[i++] = xsh;
417 if (super->path_element->port == FISH_FLAG_COMPRESSED)
418 argv[i++] = "-C";
419
420 if (super->path_element->port > FISH_FLAG_RSH)
421 {
422 argv[i++] = "-p";
423 g_snprintf (gbuf, sizeof (gbuf), "%d", super->path_element->port);
424 argv[i++] = gbuf;
425 }
426
427 /*
428 * Add the user name to the ssh command line only if it was explicitly
429 * set in vfs URL. rsh/ssh will get current user by default
430 * plus we can set convenient overrides in ~/.ssh/config (explicit -l
431 * option breaks it for some)
432 */
433
434 if (super->path_element->user != NULL)
435 {
436 argv[i++] = "-l";
437 argv[i++] = super->path_element->user;
438 }
439 else
440 {
441 /* The rest of the code assumes it to be a valid username */
442 super->path_element->user = vfs_get_local_username ();
443 }
444
445 argv[i++] = super->path_element->host;
446 argv[i++] = "echo FISH:; /bin/sh";
447 argv[i++] = NULL;
448
449 fish_pipeopen (super, xsh, argv);
450 }
451
452 /* --------------------------------------------------------------------------------------------- */
453
454 static gboolean
455 fish_open_archive_talk (struct vfs_class *me, struct vfs_s_super *super)
456 {
457 char answer[2048];
458
459 printf ("\n%s\n", _("fish: Waiting for initial line..."));
460
461 if (!vfs_s_get_line (me, SUP->sockr, answer, sizeof (answer), ':'))
462 return FALSE;
463
464 if (strstr (answer, "assword") != NULL)
465 {
466 /* Currently, this does not work. ssh reads passwords from
467 /dev/tty, not from stdin :-(. */
468
469 printf ("\n%s\n", _("Sorry, we cannot do password authenticated connections for now."));
470
471 return FALSE;
472 #if 0
473 if (super->path_element->password == NULL)
474 {
475 char *p, *op;
476 p = g_strdup_printf (_("fish: Password is required for %s"), super->path_element->user);
477 op = vfs_get_password (p);
478 g_free (p);
479 if (op == NULL)
480 return FALSE;
481 super->path_element->password = op;
482
483 }
484
485 printf ("\n%s\n", _("fish: Sending password..."));
486
487 {
488 size_t str_len;
489
490 str_len = strlen (super->path_element->password);
491 if ((write (SUP.sockw, super->path_element->password, str_len) != (ssize_t) str_len)
492 || (write (SUP->sockw, "\n", 1) != 1))
493 return FALSE;
494 }
495 #endif
496 }
497 return TRUE;
498 }
499
500 /* --------------------------------------------------------------------------------------------- */
501
502 static int
503 fish_open_archive_int (struct vfs_class *me, struct vfs_s_super *super)
504 {
505 gboolean ftalk;
506 /* hide panels */
507 pre_exec ();
508
509 /* open pipe */
510 fish_open_archive_pipeopen (super);
511
512 /* Start talk with ssh-server (password prompt, etc ) */
513 ftalk = fish_open_archive_talk (me, super);
514
515 /* show panels */
516 post_exec ();
517
518 if (!ftalk)
519 ERRNOR (E_PROTO, -1);
520
521 vfs_print_message (_("fish: Sending initial line..."));
522 /*
523 * Run `start_fish_server'. If it doesn't exist - no problem,
524 * we'll talk directly to the shell.
525 */
526
527 if (fish_command
528 (me, super, WAIT_REPLY,
529 "#FISH\necho; start_fish_server 2>&1; echo '### 200'\n") != COMPLETE)
530 ERRNOR (E_PROTO, -1);
531
532 vfs_print_message (_("fish: Handshaking version..."));
533 if (fish_command (me, super, WAIT_REPLY, "#VER 0.0.3\necho '### 000'\n") != COMPLETE)
534 ERRNOR (E_PROTO, -1);
535
536 /* Set up remote locale to C, otherwise dates cannot be recognized */
537 if (fish_command
538 (me, super, WAIT_REPLY,
539 "LANG=C LC_ALL=C LC_TIME=C; export LANG LC_ALL LC_TIME;\n" "echo '### 200'\n") != COMPLETE)
540 ERRNOR (E_PROTO, -1);
541
542 vfs_print_message (_("fish: Getting host info..."));
543 if (fish_info (me, super))
544 SUP->scr_env = fish_set_env (SUP->host_flags);
545
546 #if 0
547 super->name =
548 g_strconcat ("sh://", super->path_element->user, "@", super->path_element->host, "/",
549 (char *) NULL);
550 #else
551 super->name = g_strdup (PATH_SEP_STR);
552 #endif
553
554 super->root = vfs_s_new_inode (me, super, vfs_s_default_stat (me, S_IFDIR | 0755));
555 return 0;
556 }
557
558 /* --------------------------------------------------------------------------------------------- */
559
560 static int
561 fish_open_archive (struct vfs_s_super *super,
562 const vfs_path_t * vpath, const vfs_path_element_t * vpath_element)
563 {
564 (void) vpath;
565
566 super->data = g_new0 (fish_super_data_t, 1);
567 super->path_element = vfs_path_element_clone (vpath_element);
568
569 if (strncmp (vpath_element->vfs_prefix, "rsh", 3) == 0)
570 super->path_element->port = FISH_FLAG_RSH;
571
572 SUP->scr_ls =
573 fish_load_script_from_file (super->path_element->host, FISH_LS_FILE, FISH_LS_DEF_CONTENT);
574 SUP->scr_exists =
575 fish_load_script_from_file (super->path_element->host, FISH_EXISTS_FILE,
576 FISH_EXISTS_DEF_CONTENT);
577 SUP->scr_mkdir =
578 fish_load_script_from_file (super->path_element->host, FISH_MKDIR_FILE,
579 FISH_MKDIR_DEF_CONTENT);
580 SUP->scr_unlink =
581 fish_load_script_from_file (super->path_element->host, FISH_UNLINK_FILE,
582 FISH_UNLINK_DEF_CONTENT);
583 SUP->scr_chown =
584 fish_load_script_from_file (super->path_element->host, FISH_CHOWN_FILE,
585 FISH_CHOWN_DEF_CONTENT);
586 SUP->scr_chmod =
587 fish_load_script_from_file (super->path_element->host, FISH_CHMOD_FILE,
588 FISH_CHMOD_DEF_CONTENT);
589 SUP->scr_utime =
590 fish_load_script_from_file (super->path_element->host, FISH_UTIME_FILE,
591 FISH_UTIME_DEF_CONTENT);
592 SUP->scr_rmdir =
593 fish_load_script_from_file (super->path_element->host, FISH_RMDIR_FILE,
594 FISH_RMDIR_DEF_CONTENT);
595 SUP->scr_ln =
596 fish_load_script_from_file (super->path_element->host, FISH_LN_FILE, FISH_LN_DEF_CONTENT);
597 SUP->scr_mv =
598 fish_load_script_from_file (super->path_element->host, FISH_MV_FILE, FISH_MV_DEF_CONTENT);
599 SUP->scr_hardlink =
600 fish_load_script_from_file (super->path_element->host, FISH_HARDLINK_FILE,
601 FISH_HARDLINK_DEF_CONTENT);
602 SUP->scr_get =
603 fish_load_script_from_file (super->path_element->host, FISH_GET_FILE, FISH_GET_DEF_CONTENT);
604 SUP->scr_send =
605 fish_load_script_from_file (super->path_element->host, FISH_SEND_FILE,
606 FISH_SEND_DEF_CONTENT);
607 SUP->scr_append =
608 fish_load_script_from_file (super->path_element->host, FISH_APPEND_FILE,
609 FISH_APPEND_DEF_CONTENT);
610 SUP->scr_info =
611 fish_load_script_from_file (super->path_element->host, FISH_INFO_FILE,
612 FISH_INFO_DEF_CONTENT);
613
614 return fish_open_archive_int (vpath_element->class, super);
615 }
616
617 /* --------------------------------------------------------------------------------------------- */
618
619 static int
620 fish_archive_same (const vfs_path_element_t * vpath_element, struct vfs_s_super *super,
621 const vfs_path_t * vpath, void *cookie)
622 {
623 vfs_path_element_t *path_element;
624 int result;
625
626 (void) vpath;
627 (void) cookie;
628
629 path_element = vfs_path_element_clone (vpath_element);
630
631 if (path_element->user == NULL)
632 path_element->user = vfs_get_local_username ();
633
634 result = ((strcmp (path_element->host, super->path_element->host) == 0)
635 && (strcmp (path_element->user, super->path_element->user) == 0)
636 && (path_element->port == super->path_element->port)) ? 1 : 0;
637
638 vfs_path_element_free (path_element);
639
640 return result;
641 }
642
643 /* --------------------------------------------------------------------------------------------- */
644
645 static int
646 fish_dir_load (struct vfs_class *me, struct vfs_s_inode *dir, char *remote_path)
647 {
648 struct vfs_s_super *super = dir->super;
649 char buffer[8192];
650 struct vfs_s_entry *ent = NULL;
651 FILE *logfile;
652 char *quoted_path;
653 int reply_code;
654 gchar *shell_commands;
655
656 /*
657 * Simple FISH debug interface :]
658 */
659 #if 0
660 if (!(MEDATA->logfile))
661 {
662 MEDATA->logfile = fopen ("/tmp/mc-FISH.sh", "w");
663 }
664 #endif
665 logfile = MEDATA->logfile;
666
667 vfs_print_message (_("fish: Reading directory %s..."), remote_path);
668
669 gettimeofday (&dir->timestamp, NULL);
670 dir->timestamp.tv_sec += fish_directory_timeout;
671 quoted_path = strutils_shell_escape (remote_path);
672 shell_commands = g_strconcat (SUP->scr_env, "FISH_FILENAME=%s;\n", SUP->scr_ls, (char *) NULL);
673 fish_command (me, super, NONE, shell_commands, quoted_path);
674 g_free (shell_commands);
675 g_free (quoted_path);
676 ent = vfs_s_generate_entry (me, NULL, dir, 0);
677 while (TRUE)
678 {
679 int res = vfs_s_get_line_interruptible (me, buffer, sizeof (buffer), SUP->sockr);
680 if ((!res) || (res == EINTR))
681 {
682 vfs_s_free_entry (me, ent);
683 me->verrno = ECONNRESET;
684 goto error;
685 }
686 if (logfile)
687 {
688 fputs (buffer, logfile);
689 fputs ("\n", logfile);
690 fflush (logfile);
691 }
692 if (!strncmp (buffer, "### ", 4))
693 break;
694 if ((!buffer[0]))
695 {
696 if (ent->name)
697 {
698 vfs_s_insert_entry (me, dir, ent);
699 ent = vfs_s_generate_entry (me, NULL, dir, 0);
700 }
701 continue;
702 }
703
704 #define ST ent->ino->st
705
706 switch (buffer[0])
707 {
708 case ':':
709 {
710 char *temp;
711 char *data_start = buffer + 1;
712 char *filename = data_start;
713 char *filename_bound;
714
715 filename_bound = filename + strlen (filename);
716
717 if (!strcmp (data_start, "\".\"") || !strcmp (data_start, "\"..\""))
718 break; /* We'll do "." and ".." ourselves */
719
720 if (S_ISLNK (ST.st_mode))
721 {
722 char *linkname;
723 char *linkname_bound;
724 /* we expect: "escaped-name" -> "escaped-name"
725 // -> cannot occur in filenames,
726 // because it will be escaped to -\> */
727
728
729 linkname_bound = filename_bound;
730
731 if (*filename == '"')
732 ++filename;
733
734 linkname = strstr (filename, "\" -> \"");
735 if (!linkname)
736 {
737 /* broken client, or smth goes wrong */
738 linkname = filename_bound;
739 if (filename_bound > filename && *(filename_bound - 1) == '"')
740 --filename_bound; /* skip trailing " */
741 }
742 else
743 {
744 filename_bound = linkname;
745 linkname += 6; /* strlen ("\" -> \"") */
746 if (*(linkname_bound - 1) == '"')
747 --linkname_bound; /* skip trailing " */
748 }
749
750 ent->name = g_strndup (filename, filename_bound - filename);
751 temp = ent->name;
752 ent->name = strutils_shell_unescape (ent->name);
753 g_free (temp);
754
755 ent->ino->linkname = g_strndup (linkname, linkname_bound - linkname);
756 temp = ent->ino->linkname;
757 ent->ino->linkname = strutils_shell_unescape (ent->ino->linkname);
758 g_free (temp);
759 }
760 else
761 {
762 /* we expect: "escaped-name" */
763 if (filename_bound - filename > 2)
764 {
765 /*
766 there is at least 2 "
767 and we skip them
768 */
769 if (*filename == '"')
770 ++filename;
771 if (*(filename_bound - 1) == '"')
772 --filename_bound;
773 }
774 ent->name = g_strndup (filename, filename_bound - filename);
775 temp = ent->name;
776 ent->name = strutils_shell_unescape (ent->name);
777 g_free (temp);
778 }
779 break;
780 }
781 case 'S':
782 #ifdef HAVE_ATOLL
783 ST.st_size = (off_t) atoll (buffer + 1);
784 #else
785 ST.st_size = (off_t) atof (buffer + 1);
786 #endif
787 break;
788 case 'P':
789 {
790 size_t skipped;
791 vfs_parse_filemode (buffer + 1, &skipped, &ST.st_mode);
792 break;
793 }
794 case 'R':
795 {
796 /*
797 raw filemode:
798 we expect: Roctal-filemode octal-filetype uid.gid
799 */
800 size_t skipped;
801 vfs_parse_raw_filemode (buffer + 1, &skipped, &ST.st_mode);
802 break;
803 }
804 case 'd':
805 {
806 vfs_split_text (buffer + 1);
807 if (!vfs_parse_filedate (0, &ST.st_ctime))
808 break;
809 ST.st_atime = ST.st_mtime = ST.st_ctime;
810 }
811 break;
812 case 'D':
813 {
814 struct tm tim;
815 if (sscanf (buffer + 1, "%d %d %d %d %d %d", &tim.tm_year, &tim.tm_mon,
816 &tim.tm_mday, &tim.tm_hour, &tim.tm_min, &tim.tm_sec) != 6)
817 break;
818 ST.st_atime = ST.st_mtime = ST.st_ctime = mktime (&tim);
819 }
820 break;
821 case 'E':
822 {
823 int maj, min;
824 if (sscanf (buffer + 1, "%d,%d", &maj, &min) != 2)
825 break;
826 #ifdef HAVE_STRUCT_STAT_ST_RDEV
827 ST.st_rdev = makedev (maj, min);
828 #endif
829 }
830 }
831 }
832
833 vfs_s_free_entry (me, ent);
834 reply_code = fish_decode_reply (buffer + 4, 0);
835 if (reply_code == COMPLETE)
836 {
837 vfs_print_message (_("%s: done."), me->name);
838 return 0;
839 }
840
841 me->verrno = reply_code == ERROR ? EACCES : E_REMOTE;
842
843 error:
844 vfs_print_message (_("%s: failure"), me->name);
845 return -1;
846 }
847
848 /* --------------------------------------------------------------------------------------------- */
849
850 static int
851 fish_file_store (struct vfs_class *me, vfs_file_handler_t * fh, char *name, char *localname)
852 {
853 fish_fh_data_t *fish = (fish_fh_data_t *) fh->data;
854 gchar *shell_commands = NULL;
855 struct vfs_s_super *super = FH_SUPER;
856 int code;
857 off_t total;
858 char buffer[BUF_8K];
859 struct stat s;
860 int h;
861 char *quoted_name;
862
863 h = open (localname, O_RDONLY);
864 if (h == -1)
865 ERRNOR (EIO, -1);
866 if (fstat (h, &s) < 0)
867 {
868 close (h);
869 ERRNOR (EIO, -1);
870 }
871
872 /* First, try this as stor:
873 *
874 * ( head -c number ) | ( cat > file; cat >/dev/null )
875 *
876 * If `head' is not present on the remote system, `dd' will be used.
877 * Unfortunately, we cannot trust most non-GNU `head' implementations
878 * even if `-c' options is supported. Therefore, we separate GNU head
879 * (and other modern heads?) using `-q' and `-' . This causes another
880 * implementations to fail (because of "incorrect options").
881 *
882 * Fallback is:
883 *
884 * rest=<number>
885 * while [ $rest -gt 0 ]
886 * do
887 * cnt=`expr \( $rest + 255 \) / 256`
888 * n=`dd bs=256 count=$cnt | tee -a <target_file> | wc -c`
889 * rest=`expr $rest - $n`
890 * done
891 *
892 * `dd' was not designed for full filling of input buffers,
893 * and does not report exact number of bytes (not blocks).
894 * Therefore a more complex shell script is needed.
895 *
896 * On some systems non-GNU head writes "Usage:" error report to stdout
897 * instead of stderr. It makes impossible the use of "head || dd"
898 * algorithm for file appending case, therefore just "dd" is used for it.
899 */
900
901 quoted_name = strutils_shell_escape (name);
902 vfs_print_message (_("fish: store %s: sending command..."), quoted_name);
903
904 /* FIXME: File size is limited to ULONG_MAX */
905 if (fish->append)
906 {
907 shell_commands =
908 g_strconcat (SUP->scr_env, "FISH_FILENAME=%s FISH_FILESIZE=%" PRIuMAX ";\n",
909 SUP->scr_append, (char *) NULL);
910
911 code = fish_command (me, super, WAIT_REPLY, shell_commands, quoted_name,
912 (uintmax_t) s.st_size);
913 g_free (shell_commands);
914 }
915 else
916 {
917 shell_commands =
918 g_strconcat (SUP->scr_env, "FISH_FILENAME=%s FISH_FILESIZE=%" PRIuMAX ";\n",
919 SUP->scr_send, (char *) NULL);
920 code = fish_command (me, super, WAIT_REPLY, shell_commands, quoted_name,
921 (uintmax_t) s.st_size);
922 g_free (shell_commands);
923 }
924 if (code != PRELIM)
925 {
926 close (h);
927 ERRNOR (E_REMOTE, -1);
928 }
929
930 total = 0;
931
932 while (TRUE)
933 {
934 ssize_t n, t;
935
936 while ((n = read (h, buffer, sizeof (buffer))) < 0)
937 {
938 if ((errno == EINTR) && tty_got_interrupt ())
939 continue;
940 vfs_print_message (_("fish: Local read failed, sending zeros"));
941 close (h);
942 h = open ("/dev/zero", O_RDONLY);
943 }
944
945 if (n == 0)
946 break;
947
948 t = write (SUP->sockw, buffer, n);
949 if (t != n)
950 {
951 if (t == -1)
952 me->verrno = errno;
953 else
954 me->verrno = EIO;
955 goto error_return;
956 }
957 tty_disable_interrupt_key ();
958 total += n;
959 vfs_print_message ("%s: %" PRIuMAX "/%" PRIuMAX, _("fish: storing file"),
960 (uintmax_t) total, (uintmax_t) s.st_size);
961 }
962 close (h);
963 g_free (quoted_name);
964
965 if (fish_get_reply (me, SUP->sockr, NULL, 0) != COMPLETE)
966 ERRNOR (E_REMOTE, -1);
967 return 0;
968
969 error_return:
970 close (h);
971 fish_get_reply (me, SUP->sockr, NULL, 0);
972 g_free (quoted_name);
973 return -1;
974 }
975
976 /* --------------------------------------------------------------------------------------------- */
977
978 static int
979 fish_linear_start (struct vfs_class *me, vfs_file_handler_t * fh, off_t offset)
980 {
981 fish_fh_data_t *fish;
982 gchar *shell_commands = NULL;
983 struct vfs_s_super *super = FH_SUPER;
984 char *name;
985 char *quoted_name;
986
987 if (fh->data == NULL)
988 fh->data = g_new0 (fish_fh_data_t, 1);
989
990 fish = (fish_fh_data_t *) fh->data;
991
992 name = vfs_s_fullpath (me, fh->ino);
993 if (name == NULL)
994 return 0;
995 quoted_name = strutils_shell_escape (name);
996 g_free (name);
997 fish->append = FALSE;
998
999 /*
1000 * Check whether the remote file is readable by using `dd' to copy
1001 * a single byte from the remote file to /dev/null. If `dd' completes
1002 * with exit status of 0 use `cat' to send the file contents to the
1003 * standard output (i.e. over the network).
1004 */
1005
1006 shell_commands =
1007 g_strconcat (SUP->scr_env, "FISH_FILENAME=%s FISH_START_OFFSET=%" PRIuMAX ";\n",
1008 SUP->scr_get, (char *) NULL);
1009 offset = fish_command (me, super, WANT_STRING, shell_commands, quoted_name, (uintmax_t) offset);
1010 g_free (shell_commands);
1011 g_free (quoted_name);
1012 if (offset != PRELIM)
1013 ERRNOR (E_REMOTE, 0);
1014 fh->linear = LS_LINEAR_OPEN;
1015 fish->got = 0;
1016 errno = 0;
1017 #if SIZEOF_OFF_T == SIZEOF_LONG
1018 fish->total = (off_t) strtol (reply_str, NULL, 10);
1019 #else
1020 fish->total = (off_t) strtoll (reply_str, NULL, 10);
1021 #endif
1022 if (errno != 0)
1023 ERRNOR (E_REMOTE, 0);
1024 return 1;
1025 }
1026
1027 /* --------------------------------------------------------------------------------------------- */
1028
1029 static void
1030 fish_linear_abort (struct vfs_class *me, vfs_file_handler_t * fh)
1031 {
1032 fish_fh_data_t *fish = (fish_fh_data_t *) fh->data;
1033 struct vfs_s_super *super = FH_SUPER;
1034 char buffer[BUF_8K];
1035 ssize_t n;
1036
1037 vfs_print_message (_("Aborting transfer..."));
1038
1039 do
1040 {
1041 n = MIN ((off_t) sizeof (buffer), (fish->total - fish->got));
1042 if (n != 0)
1043 {
1044 n = read (SUP->sockr, buffer, n);
1045 if (n < 0)
1046 return;
1047 fish->got += n;
1048 }
1049 }
1050 while (n != 0);
1051
1052 if (fish_get_reply (me, SUP->sockr, NULL, 0) != COMPLETE)
1053 vfs_print_message (_("Error reported after abort."));
1054 else
1055 vfs_print_message (_("Aborted transfer would be successful."));
1056 }
1057
1058 /* --------------------------------------------------------------------------------------------- */
1059
1060 static ssize_t
1061 fish_linear_read (struct vfs_class *me, vfs_file_handler_t * fh, void *buf, size_t len)
1062 {
1063 fish_fh_data_t *fish = (fish_fh_data_t *) fh->data;
1064 struct vfs_s_super *super = FH_SUPER;
1065 ssize_t n = 0;
1066
1067 len = MIN ((size_t) (fish->total - fish->got), len);
1068 tty_disable_interrupt_key ();
1069 while (len != 0 && ((n = read (SUP->sockr, buf, len)) < 0))
1070 {
1071 if ((errno == EINTR) && !tty_got_interrupt ())
1072 continue;
1073 break;
1074 }
1075 tty_enable_interrupt_key ();
1076
1077 if (n > 0)
1078 fish->got += n;
1079 else if (n < 0)
1080 fish_linear_abort (me, fh);
1081 else if (fish_get_reply (me, SUP->sockr, NULL, 0) != COMPLETE)
1082 ERRNOR (E_REMOTE, -1);
1083 ERRNOR (errno, n);
1084 }
1085
1086 /* --------------------------------------------------------------------------------------------- */
1087
1088 static void
1089 fish_linear_close (struct vfs_class *me, vfs_file_handler_t * fh)
1090 {
1091 fish_fh_data_t *fish = (fish_fh_data_t *) fh->data;
1092
1093 if (fish->total != fish->got)
1094 fish_linear_abort (me, fh);
1095 }
1096
1097 /* --------------------------------------------------------------------------------------------- */
1098
1099 static int
1100 fish_ctl (void *fh, int ctlop, void *arg)
1101 {
1102 (void) arg;
1103 (void) fh;
1104 (void) ctlop;
1105 return 0;
1106 #if 0
1107 switch (ctlop)
1108 {
1109 case VFS_CTL_IS_NOTREADY:
1110 {
1111 int v;
1112
1113 if (!FH->linear)
1114 vfs_die ("You may not do this");
1115 if (FH->linear == LS_LINEAR_CLOSED || FH->linear == LS_LINEAR_PREOPEN)
1116 return 0;
1117
1118 v = vfs_s_select_on_two (FH_SUPER->u.fish.sockr, 0);
1119 if (((v < 0) && (errno == EINTR)) || v == 0)
1120 return 1;
1121 return 0;
1122 }
1123 default:
1124 return 0;
1125 }
1126 #endif
1127 }
1128
1129 /* --------------------------------------------------------------------------------------------- */
1130
1131 static int
1132 fish_send_command (struct vfs_class *me, struct vfs_s_super *super, const char *cmd, int flags)
1133 {
1134 int r;
1135
1136 r = fish_command (me, super, WAIT_REPLY, "%s", cmd);
1137 vfs_stamp_create (&vfs_fish_ops, super);
1138 if (r != COMPLETE)
1139 ERRNOR (E_REMOTE, -1);
1140 if (flags & OPT_FLUSH)
1141 vfs_s_invalidate (me, super);
1142 return 0;
1143 }
1144
1145 /* --------------------------------------------------------------------------------------------- */
1146
1147 static int
1148 fish_rename (const vfs_path_t * vpath1, const vfs_path_t * vpath2)
1149 {
1150 gchar *shell_commands = NULL;
1151 char buf[BUF_LARGE];
1152 const char *crpath1, *crpath2;
1153 char *rpath1, *rpath2;
1154 struct vfs_s_super *super, *super2;
1155 const vfs_path_element_t *path_element;
1156
1157 path_element = vfs_path_get_by_index (vpath1, -1);
1158
1159 crpath1 = vfs_s_get_path (vpath1, &super, 0);
1160 if (crpath1 == NULL)
1161 return -1;
1162
1163 crpath2 = vfs_s_get_path (vpath2, &super2, 0);
1164 if (crpath2 == NULL)
1165 return -1;
1166
1167 rpath1 = strutils_shell_escape (crpath1);
1168 rpath2 = strutils_shell_escape (crpath2);
1169 shell_commands = g_strconcat (SUP->scr_env, "FISH_FILEFROM=%s FISH_FILETO=%s;\n",
1170 SUP->scr_mv, (char *) NULL);
1171 g_snprintf (buf, sizeof (buf), shell_commands, rpath1, rpath2);
1172 g_free (shell_commands);
1173 g_free (rpath1);
1174 g_free (rpath2);
1175 return fish_send_command (path_element->class, super2, buf, OPT_FLUSH);
1176 }
1177
1178 /* --------------------------------------------------------------------------------------------- */
1179
1180 static int
1181 fish_link (const vfs_path_t * vpath1, const vfs_path_t * vpath2)
1182 {
1183 gchar *shell_commands = NULL;
1184 char buf[BUF_LARGE];
1185 const char *crpath1, *crpath2;
1186 char *rpath1, *rpath2;
1187 struct vfs_s_super *super, *super2;
1188 const vfs_path_element_t *path_element;
1189
1190 path_element = vfs_path_get_by_index (vpath1, -1);
1191
1192 crpath1 = vfs_s_get_path (vpath1, &super, 0);
1193 if (crpath1 == NULL)
1194 return -1;
1195
1196 crpath2 = vfs_s_get_path (vpath2, &super2, 0);
1197 if (crpath2 == NULL)
1198 return -1;
1199
1200 rpath1 = strutils_shell_escape (crpath1);
1201 rpath2 = strutils_shell_escape (crpath2);
1202 shell_commands = g_strconcat (SUP->scr_env, "FISH_FILEFROM=%s FISH_FILETO=%s;\n",
1203 SUP->scr_hardlink, (char *) NULL);
1204 g_snprintf (buf, sizeof (buf), shell_commands, rpath1, rpath2);
1205 g_free (shell_commands);
1206 g_free (rpath1);
1207 g_free (rpath2);
1208 return fish_send_command (path_element->class, super2, buf, OPT_FLUSH);
1209 }
1210
1211
1212 /* --------------------------------------------------------------------------------------------- */
1213
1214 static int
1215 fish_symlink (const vfs_path_t * vpath1, const vfs_path_t * vpath2)
1216 {
1217 char *qsetto;
1218 gchar *shell_commands = NULL;
1219 char buf[BUF_LARGE];
1220 const char *crpath;
1221 char *rpath;
1222 struct vfs_s_super *super;
1223 const vfs_path_element_t *path_element;
1224
1225 path_element = vfs_path_get_by_index (vpath2, -1);
1226
1227 crpath = vfs_s_get_path (vpath2, &super, 0);
1228 if (crpath == NULL)
1229 return -1;
1230
1231 rpath = strutils_shell_escape (crpath);
1232 qsetto = strutils_shell_escape (vfs_path_get_by_index (vpath1, -1)->path);
1233
1234 shell_commands = g_strconcat (SUP->scr_env, "FISH_FILEFROM=%s FISH_FILETO=%s;\n",
1235 SUP->scr_ln, (char *) NULL);
1236 g_snprintf (buf, sizeof (buf), shell_commands, qsetto, rpath);
1237 g_free (shell_commands);
1238 g_free (qsetto);
1239 g_free (rpath);
1240 return fish_send_command (path_element->class, super, buf, OPT_FLUSH);
1241 }
1242
1243 /* --------------------------------------------------------------------------------------------- */
1244
1245 static int
1246 fish_chmod (const vfs_path_t * vpath, mode_t mode)
1247 {
1248 gchar *shell_commands = NULL;
1249 char buf[BUF_LARGE];
1250 const char *crpath;
1251 char *rpath;
1252 struct vfs_s_super *super;
1253 const vfs_path_element_t *path_element;
1254
1255 path_element = vfs_path_get_by_index (vpath, -1);
1256
1257 crpath = vfs_s_get_path (vpath, &super, 0);
1258 if (crpath == NULL)
1259 return -1;
1260 rpath = strutils_shell_escape (crpath);
1261
1262 shell_commands = g_strconcat (SUP->scr_env, "FISH_FILENAME=%s FISH_FILEMODE=%4.4o;\n",
1263 SUP->scr_chmod, (char *) NULL);
1264 g_snprintf (buf, sizeof (buf), shell_commands, rpath, (int) (mode & 07777));
1265 g_free (shell_commands);
1266 g_free (rpath);
1267 return fish_send_command (path_element->class, super, buf, OPT_FLUSH);
1268 }
1269
1270 /* --------------------------------------------------------------------------------------------- */
1271
1272 static int
1273 fish_chown (const vfs_path_t * vpath, uid_t owner, gid_t group)
1274 {
1275 char *sowner, *sgroup;
1276 struct passwd *pw;
1277 struct group *gr;
1278
1279 pw = getpwuid (owner);
1280 if (pw == NULL)
1281 return 0;
1282
1283 gr = getgrgid (group);
1284 if (gr == NULL)
1285 return 0;
1286
1287 sowner = pw->pw_name;
1288 sgroup = gr->gr_name;
1289
1290 {
1291 gchar *shell_commands = NULL;
1292 char buf[BUF_LARGE];
1293 const char *crpath;
1294 char *rpath;
1295 struct vfs_s_super *super;
1296 const vfs_path_element_t *path_element;
1297
1298 path_element = vfs_path_get_by_index (vpath, -1);
1299
1300 crpath = vfs_s_get_path (vpath, &super, 0);
1301 if (crpath == NULL)
1302 return -1;
1303 rpath = strutils_shell_escape (crpath);
1304
1305 shell_commands = g_strconcat (SUP->scr_env,
1306 "FISH_FILENAME=%s FISH_FILEOWNER=%s FISH_FILEGROUP=%s;\n",
1307 SUP->scr_chown, (char *) NULL);
1308 g_snprintf (buf, sizeof (buf), shell_commands, rpath, sowner, sgroup);
1309 g_free (shell_commands);
1310 fish_send_command (path_element->class, super, buf, OPT_FLUSH);
1311 /* FIXME: what should we report if chgrp succeeds but chown fails? */
1312 /* fish_send_command(me, super, buf, OPT_FLUSH); */
1313 g_free (rpath);
1314 return fish_send_command (path_element->class, super, buf, OPT_FLUSH);
1315 }
1316 }
1317
1318 /* --------------------------------------------------------------------------------------------- */
1319
1320 static int
1321 fish_utime (const vfs_path_t * vpath, struct utimbuf *times)
1322 {
1323 gchar *shell_commands = NULL;
1324 char utcmtime[16], utcatime[16];
1325 struct tm *gmt;
1326
1327 char buf[BUF_LARGE];
1328 const char *crpath;
1329 char *rpath;
1330 struct vfs_s_super *super;
1331 const vfs_path_element_t *path_element;
1332
1333 path_element = vfs_path_get_by_index (vpath, -1);
1334
1335 crpath = vfs_s_get_path (vpath, &super, 0);
1336 if (crpath == NULL)
1337 return -1;
1338 rpath = strutils_shell_escape (crpath);
1339
1340 gmt = gmtime (&times->modtime);
1341 g_snprintf (utcmtime, sizeof (utcmtime), "%04d%02d%02d%02d%02d.%02d",
1342 gmt->tm_year + 1900, gmt->tm_mon + 1, gmt->tm_mday,
1343 gmt->tm_hour, gmt->tm_min, gmt->tm_sec);
1344
1345 gmt = gmtime (&times->actime);
1346 g_snprintf (utcatime, sizeof (utcatime), "%04d%02d%02d%02d%02d.%02d",
1347 gmt->tm_year + 1900, gmt->tm_mon + 1, gmt->tm_mday,
1348 gmt->tm_hour, gmt->tm_min, gmt->tm_sec);
1349
1350 shell_commands =
1351 g_strconcat (SUP->scr_env, "FISH_FILENAME=%s FISH_FILEATIME=%ld FISH_FILEMTIME=%ld ",
1352 "FISH_TOUCHATIME=%s FISH_TOUCHMTIME=%s;\n", SUP->scr_utime, (char *) NULL);
1353 g_snprintf (buf, sizeof (buf), shell_commands, rpath, (long) times->actime,
1354 (long) times->modtime, utcatime, utcmtime);
1355 g_free (shell_commands);
1356 g_free (rpath);
1357 return fish_send_command (path_element->class, super, buf, OPT_FLUSH);
1358 }
1359
1360 /* --------------------------------------------------------------------------------------------- */
1361
1362 static int
1363 fish_unlink (const vfs_path_t * vpath)
1364 {
1365 gchar *shell_commands = NULL;
1366
1367 char buf[BUF_LARGE];
1368 const char *crpath;
1369 char *rpath;
1370 struct vfs_s_super *super;
1371 const vfs_path_element_t *path_element;
1372
1373 path_element = vfs_path_get_by_index (vpath, -1);
1374
1375 crpath = vfs_s_get_path (vpath, &super, 0);
1376 if (crpath == NULL)
1377 return -1;
1378 rpath = strutils_shell_escape (crpath);
1379
1380 shell_commands =
1381 g_strconcat (SUP->scr_env, "FISH_FILENAME=%s;\n", SUP->scr_unlink, (char *) NULL);
1382 g_snprintf (buf, sizeof (buf), shell_commands, rpath);
1383 g_free (shell_commands);
1384 g_free (rpath);
1385 return fish_send_command (path_element->class, super, buf, OPT_FLUSH);
1386 }
1387
1388 /* --------------------------------------------------------------------------------------------- */
1389
1390 static int
1391 fish_exists (const vfs_path_t * vpath)
1392 {
1393 gchar *shell_commands = NULL;
1394
1395 char buf[BUF_LARGE];
1396 const char *crpath;
1397 char *rpath;
1398 struct vfs_s_super *super;
1399 const vfs_path_element_t *path_element;
1400
1401 path_element = vfs_path_get_by_index (vpath, -1);
1402
1403 crpath = vfs_s_get_path (vpath, &super, 0);
1404 if (crpath == NULL)
1405 return -1;
1406 rpath = strutils_shell_escape (crpath);
1407
1408 shell_commands =
1409 g_strconcat (SUP->scr_env, "FISH_FILENAME=%s;\n", SUP->scr_exists, (char *) NULL);
1410 g_snprintf (buf, sizeof (buf), shell_commands, rpath);
1411 g_free (shell_commands);
1412 g_free (rpath);
1413
1414 return (fish_send_command (path_element->class, super, buf, OPT_FLUSH) == 0) ? 1 : 0;
1415 }
1416
1417 /* --------------------------------------------------------------------------------------------- */
1418
1419 static int
1420 fish_mkdir (const vfs_path_t * vpath, mode_t mode)
1421 {
1422 gchar *shell_commands = NULL;
1423 int ret_code;
1424 char buf[BUF_LARGE];
1425 const char *crpath;
1426 char *rpath;
1427 struct vfs_s_super *super;
1428 const vfs_path_element_t *path_element;
1429
1430 (void) mode;
1431
1432 path_element = vfs_path_get_by_index (vpath, -1);
1433
1434 crpath = vfs_s_get_path (vpath, &super, 0);
1435 if (crpath == NULL)
1436 return -1;
1437 rpath = strutils_shell_escape (crpath);
1438
1439 shell_commands =
1440 g_strconcat (SUP->scr_env, "FISH_FILENAME=%s;\n", SUP->scr_mkdir, (char *) NULL);
1441 g_snprintf (buf, sizeof (buf), shell_commands, rpath);
1442 g_free (shell_commands);
1443
1444 g_free (rpath);
1445 ret_code = fish_send_command (path_element->class, super, buf, OPT_FLUSH);
1446
1447 if (ret_code != 0)
1448 return ret_code;
1449
1450 if (!fish_exists (vpath))
1451 {
1452 path_element->class->verrno = EACCES;
1453 return -1;
1454 }
1455 return 0;
1456 }
1457
1458 /* --------------------------------------------------------------------------------------------- */
1459
1460 static int
1461 fish_rmdir (const vfs_path_t * vpath)
1462 {
1463 gchar *shell_commands = NULL;
1464 char buf[BUF_LARGE];
1465 const char *crpath;
1466 char *rpath;
1467 struct vfs_s_super *super;
1468 const vfs_path_element_t *path_element;
1469
1470 path_element = vfs_path_get_by_index (vpath, -1);
1471
1472 crpath = vfs_s_get_path (vpath, &super, 0);
1473 if (crpath == NULL)
1474 return -1;
1475 rpath = strutils_shell_escape (crpath);
1476
1477 shell_commands =
1478 g_strconcat (SUP->scr_env, "FISH_FILENAME=%s;\n", SUP->scr_rmdir, (char *) NULL);
1479 g_snprintf (buf, sizeof (buf), shell_commands, rpath);
1480 g_free (shell_commands);
1481 g_free (rpath);
1482 return fish_send_command (path_element->class, super, buf, OPT_FLUSH);
1483 }
1484
1485 /* --------------------------------------------------------------------------------------------- */
1486
1487 static void
1488 fish_fh_free_data (vfs_file_handler_t * fh)
1489 {
1490 if (fh != NULL)
1491 {
1492 g_free (fh->data);
1493 fh->data = NULL;
1494 }
1495 }
1496
1497 /* --------------------------------------------------------------------------------------------- */
1498
1499 static int
1500 fish_fh_open (struct vfs_class *me, vfs_file_handler_t * fh, int flags, mode_t mode)
1501 {
1502 fish_fh_data_t *fish;
1503
1504 (void) mode;
1505
1506 fh->data = g_new0 (fish_fh_data_t, 1);
1507 fish = (fish_fh_data_t *) fh->data;
1508
1509 /* File will be written only, so no need to retrieve it */
1510 if (((flags & O_WRONLY) == O_WRONLY) && ((flags & (O_RDONLY | O_RDWR)) == 0))
1511 {
1512 /* user pressed the button [ Append ] in the "Copy" dialog */
1513 if ((flags & O_APPEND) != 0)
1514 fish->append = TRUE;
1515
1516 if (!fh->ino->localname)
1517 {
1518 vfs_path_t *vpath;
1519 int tmp_handle;
1520
1521 tmp_handle = vfs_mkstemps (&vpath, me->name, fh->ino->ent->name);
1522 if (tmp_handle == -1)
1523 {
1524 vfs_path_free (vpath);
1525 goto fail;
1526 }
1527 fh->ino->localname = vfs_path_to_str (vpath);
1528 vfs_path_free (vpath);
1529 close (tmp_handle);
1530 }
1531 return 0;
1532 }
1533 if (!fh->ino->localname && vfs_s_retrieve_file (me, fh->ino) == -1)
1534 goto fail;
1535 if (!fh->ino->localname)
1536 vfs_die ("retrieve_file failed to fill in localname");
1537 return 0;
1538
1539 fail:
1540 fish_fh_free_data (fh);
1541 return -1;
1542 }
1543
1544 /* --------------------------------------------------------------------------------------------- */
1545
1546 static void
1547 fish_fill_names (struct vfs_class *me, fill_names_f func)
1548 {
1549 GList *iter;
1550
1551 for (iter = MEDATA->supers; iter != NULL; iter = g_list_next (iter))
1552 {
1553 const struct vfs_s_super *super = (const struct vfs_s_super *) iter->data;
1554
1555 char *name;
1556 char gbuf[10];
1557 const char *flags = "";
1558
1559 switch (super->path_element->port)
1560 {
1561 case FISH_FLAG_RSH:
1562 flags = ":r";
1563 break;
1564 case FISH_FLAG_COMPRESSED:
1565 flags = ":C";
1566 break;
1567 default:
1568 if (super->path_element->port > FISH_FLAG_RSH)
1569 {
1570 g_snprintf (gbuf, sizeof (gbuf), ":%d", super->path_element->port);
1571 flags = gbuf;
1572 }
1573 break;
1574 }
1575
1576 name =
1577 g_strconcat (vfs_fish_ops.prefix, VFS_PATH_URL_DELIMITER,
1578 super->path_element->user, "@", super->path_element->host, flags, "/",
1579 super->path_element->path, (char *) NULL);
1580 func (name);
1581 g_free (name);
1582 }
1583 }
1584
1585 /* --------------------------------------------------------------------------------------------- */
1586
1587 static void *
1588 fish_open (const vfs_path_t * vpath, int flags, mode_t mode)
1589 {
1590 /*
1591 sorry, i've places hack here
1592 cause fish don't able to open files with O_EXCL flag
1593 */
1594 flags &= ~O_EXCL;
1595 return vfs_s_open (vpath, flags, mode);
1596 }
1597
1598 /* --------------------------------------------------------------------------------------------- */
1599 /*** public functions ****************************************************************************/
1600 /* --------------------------------------------------------------------------------------------- */
1601
1602 void
1603 init_fish (void)
1604 {
1605 static struct vfs_s_subclass fish_subclass;
1606
1607 tcp_init ();
1608
1609 fish_subclass.flags = VFS_S_REMOTE | VFS_S_USETMP;
1610 fish_subclass.archive_same = fish_archive_same;
1611 fish_subclass.open_archive = fish_open_archive;
1612 fish_subclass.free_archive = fish_free_archive;
1613 fish_subclass.fh_open = fish_fh_open;
1614 fish_subclass.fh_free_data = fish_fh_free_data;
1615 fish_subclass.dir_load = fish_dir_load;
1616 fish_subclass.file_store = fish_file_store;
1617 fish_subclass.linear_start = fish_linear_start;
1618 fish_subclass.linear_read = fish_linear_read;
1619 fish_subclass.linear_close = fish_linear_close;
1620
1621 vfs_s_init_class (&vfs_fish_ops, &fish_subclass);
1622 vfs_fish_ops.name = "fish";
1623 vfs_fish_ops.prefix = "sh";
1624 vfs_fish_ops.fill_names = fish_fill_names;
1625 vfs_fish_ops.chmod = fish_chmod;
1626 vfs_fish_ops.chown = fish_chown;
1627 vfs_fish_ops.utime = fish_utime;
1628 vfs_fish_ops.open = fish_open;
1629 vfs_fish_ops.symlink = fish_symlink;
1630 vfs_fish_ops.link = fish_link;
1631 vfs_fish_ops.unlink = fish_unlink;
1632 vfs_fish_ops.rename = fish_rename;
1633 vfs_fish_ops.mkdir = fish_mkdir;
1634 vfs_fish_ops.rmdir = fish_rmdir;
1635 vfs_fish_ops.ctl = fish_ctl;
1636 vfs_register_class (&vfs_fish_ops);
1637 }
1638
1639 /* --------------------------------------------------------------------------------------------- */
Midnight Commander