2 smbget: a wget-like utility with support for recursive downloading and
4 Copyright (C) 2003-2004 Jelmer Vernooij <jelmer@samba.org>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
21 #include "libsmbclient.h"
23 #if _FILE_OFFSET_BITS==64
24 #define OFF_T_FORMAT "%lld"
25 #define OFF_T_FORMAT_CAST long long
27 #define OFF_T_FORMAT "%ld"
28 #define OFF_T_FORMAT_CAST long
33 static int _resume
, _recursive
, debuglevel
;
34 static char *outputfile
;
37 time_t total_start_time
= 0;
38 off_t total_bytes
= 0;
40 #define SMB_MAXPATHLEN MAXPATHLEN
42 /* Number of bytes to read when checking whether local and remote file are really the same file */
43 #define RESUME_CHECK_SIZE 512
44 #define RESUME_DOWNLOAD_OFFSET 1024
45 #define RESUME_CHECK_OFFSET RESUME_DOWNLOAD_OFFSET+RESUME_CHECK_SIZE
46 /* Number of bytes to read at once */
47 #define SMB_DEFAULT_BLOCKSIZE 64000
49 const char *username
= NULL
, *password
= NULL
, *workgroup
= NULL
;
50 int nonprompt
= 0, quiet
= 0, dots
= 0, keep_permissions
= 0, verbose
= 0, send_stdout
= 0;
51 int blocksize
= SMB_DEFAULT_BLOCKSIZE
;
53 int smb_download_file(const char *base
, const char *name
, int recursive
, int resume
, char *outfile
);
55 int get_num_cols(void)
59 if(ioctl(STDOUT_FILENO
, TIOCGWINSZ
, &ws
) < 0) {
64 #warning No support for TIOCGWINSZ
65 char *cols
= getenv("COLUMNS");
71 void change_columns(int sig
)
73 columns
= get_num_cols();
76 void human_readable(off_t s
, char *buffer
, int l
)
78 if(s
> 1024 * 1024 * 1024) snprintf(buffer
, l
, "%.2fGb", 1.0 * s
/ (1024 * 1024 * 1024));
79 else if(s
> 1024 * 1024) snprintf(buffer
, l
, "%.2fMb", 1.0 * s
/ (1024 * 1024));
80 else if(s
> 1024) snprintf(buffer
, l
, "%.2fkb", 1.0 * s
/ 1024);
81 else snprintf(buffer
, l
, OFF_T_FORMAT
"b", (OFF_T_FORMAT_CAST
)s
);
84 void get_auth_data(const char *srv
, const char *shr
, char *wg
, int wglen
, char *un
, int unlen
, char *pw
, int pwlen
)
86 static char hasasked
= 0;
87 char *wgtmp
, *usertmp
;
93 if(!nonprompt
&& !username
) {
94 printf("Username for %s at %s [guest] ", shr
, srv
);
95 fgets(tmp
, sizeof(tmp
), stdin
);
96 if(tmp
[strlen(tmp
)-1] == '\n')tmp
[strlen(tmp
)-1] = '\0';
97 strncpy(un
, tmp
, unlen
-1);
98 } else if(username
) strncpy(un
, username
, unlen
-1);
100 if(!nonprompt
&& !password
) {
102 asprintf(&prompt
, "Password for %s at %s: ", shr
, srv
);
103 pass
= getpass(prompt
);
105 strncpy(pw
, pass
, pwlen
-1);
106 } else if(password
) strncpy(pw
, password
, pwlen
-1);
108 if(workgroup
)strncpy(wg
, workgroup
, wglen
-1);
110 wgtmp
= SMB_STRNDUP(wg
, wglen
);
111 usertmp
= SMB_STRNDUP(un
, unlen
);
112 if(!quiet
)printf("Using workgroup %s, %s%s\n", wgtmp
, *usertmp
?"user ":"guest user", usertmp
);
113 free(wgtmp
); free(usertmp
);
116 int smb_download_dir(const char *base
, const char *name
, int resume
)
118 char path
[SMB_MAXPATHLEN
];
120 struct smbc_dirent
*dirent
;
121 const char *relname
= name
;
123 struct stat remotestat
;
124 snprintf(path
, SMB_MAXPATHLEN
-1, "%s%s%s", base
, (base
[0] && name
[0] && name
[0] != '/' && base
[strlen(base
)-1] != '/')?"/":"", name
);
126 /* List files in directory and call smb_download_file on them */
127 dirhandle
= smbc_opendir(path
);
129 if(errno
== ENOTDIR
) return smb_download_file(base
, name
, 1, resume
, NULL
);
130 fprintf(stderr
, "Can't open directory %s: %s\n", path
, strerror(errno
));
134 while(*relname
== '/')relname
++;
135 mkdir(relname
, 0755);
137 tmpname
= SMB_STRDUP(name
);
139 while((dirent
= smbc_readdir(dirhandle
))) {
141 if(!strcmp(dirent
->name
, ".") || !strcmp(dirent
->name
, ".."))continue;
142 asprintf(&newname
, "%s/%s", tmpname
, dirent
->name
);
143 switch(dirent
->smbc_type
) {
145 smb_download_dir(base
, newname
, resume
);
149 smb_download_dir("smb://", dirent
->name
, resume
);
153 smb_download_dir("smb://", dirent
->name
, resume
);
157 smb_download_file(base
, newname
, 1, resume
, NULL
);
160 case SMBC_FILE_SHARE
:
161 smb_download_dir(base
, newname
, resume
);
164 case SMBC_PRINTER_SHARE
:
165 if(!quiet
)printf("Ignoring printer share %s\n", dirent
->name
);
168 case SMBC_COMMS_SHARE
:
169 if(!quiet
)printf("Ignoring comms share %s\n", dirent
->name
);
173 if(!quiet
)printf("Ignoring ipc$ share %s\n", dirent
->name
);
177 fprintf(stderr
, "Ignoring file '%s' of type '%d'\n", newname
, dirent
->smbc_type
);
184 if(keep_permissions
) {
185 if(smbc_fstat(dirhandle
, &remotestat
) < 0) {
186 fprintf(stderr
, "Unable to get stats on %s on remote server\n", path
);
187 smbc_closedir(dirhandle
);
191 if(chmod(relname
, remotestat
.st_mode
) < 0) {
192 fprintf(stderr
, "Unable to change mode of local dir %s to %o\n", relname
, remotestat
.st_mode
);
193 smbc_closedir(dirhandle
);
198 smbc_closedir(dirhandle
);
202 char *print_time(long t
)
204 static char buffer
[100];
205 int secs
, mins
, hours
;
207 strncpy(buffer
, "Unknown", sizeof(buffer
));
212 mins
= (int)t
/ 60 % 60;
213 hours
= (int)t
/ (60 * 60);
214 snprintf(buffer
, sizeof(buffer
)-1, "%02d:%02d:%02d", hours
, mins
, secs
);
218 void print_progress(const char *name
, time_t start
, time_t now
, off_t start_pos
, off_t pos
, off_t total
)
223 char hpos
[20], htotal
[20], havg
[20];
224 char *status
, *filename
;
226 if(now
- start
)avg
= 1.0 * (pos
- start_pos
) / (now
- start
);
227 eta
= (total
- pos
) / avg
;
228 if(total
)prcnt
= 100.0 * pos
/ total
;
230 human_readable(pos
, hpos
, sizeof(hpos
));
231 human_readable(total
, htotal
, sizeof(htotal
));
232 human_readable(avg
, havg
, sizeof(havg
));
234 len
= asprintf(&status
, "%s of %s (%.2f%%) at %s/s ETA: %s", hpos
, htotal
, prcnt
, havg
, print_time(eta
));
237 int required
= strlen(name
), available
= columns
- len
- strlen("[] ");
238 if(required
> available
) asprintf(&filename
, "...%s", name
+ required
- available
+ 3);
239 else filename
= SMB_STRNDUP(name
, available
);
240 } else filename
= SMB_STRDUP(name
);
242 fprintf(stderr
, "\r[%s] %s", filename
, status
);
244 free(filename
); free(status
);
247 int smb_download_file(const char *base
, const char *name
, int recursive
, int resume
, char *outfile
) {
248 int remotehandle
, localhandle
;
249 time_t start_time
= time(NULL
);
251 char path
[SMB_MAXPATHLEN
];
252 char checkbuf
[2][RESUME_CHECK_SIZE
];
253 char *readbuf
= NULL
;
254 off_t offset_download
= 0, offset_check
= 0, curpos
= 0, start_offset
= 0;
255 struct stat localstat
, remotestat
;
257 snprintf(path
, SMB_MAXPATHLEN
-1, "%s%s%s", base
, (*base
&& *name
&& name
[0] != '/' && base
[strlen(base
)-1] != '/')?"/":"", name
);
259 remotehandle
= smbc_open(path
, O_RDONLY
, 0755);
261 if(remotehandle
< 0) {
265 fprintf(stderr
, "%s is a directory. Specify -R to download recursively\n", path
);
268 smb_download_dir(base
, name
, resume
);
272 fprintf(stderr
, "%s can't be found on the remote server\n", path
);
276 fprintf(stderr
, "Not enough memory\n");
281 fprintf(stderr
, "The share name used in %s does not exist\n", path
);
285 fprintf(stderr
, "You don't have enough permissions to access %s\n", path
);
294 if(smbc_fstat(remotehandle
, &remotestat
) < 0) {
295 fprintf(stderr
, "Can't stat %s: %s\n", path
, strerror(errno
));
299 if(outfile
) newpath
= outfile
;
301 newpath
= strrchr(base
, '/');
302 if(newpath
)newpath
++; else newpath
= base
;
303 } else newpath
= name
;
305 if(newpath
[0] == '/')newpath
++;
307 /* Open local file and, if necessary, resume */
309 localhandle
= open(newpath
, O_CREAT
| O_NONBLOCK
| O_RDWR
| (!resume
?O_EXCL
:0), 0755);
310 if(localhandle
< 0) {
311 fprintf(stderr
, "Can't open %s: %s\n", newpath
, strerror(errno
));
312 smbc_close(remotehandle
);
316 fstat(localhandle
, &localstat
);
318 start_offset
= localstat
.st_size
;
320 if(localstat
.st_size
&& localstat
.st_size
== remotestat
.st_size
) {
321 if(verbose
)fprintf(stderr
, "%s is already downloaded completely.\n", path
);
322 else if(!quiet
)fprintf(stderr
, "%s\n", path
);
323 smbc_close(remotehandle
);
328 if(localstat
.st_size
> RESUME_CHECK_OFFSET
&& remotestat
.st_size
> RESUME_CHECK_OFFSET
) {
329 offset_download
= localstat
.st_size
- RESUME_DOWNLOAD_OFFSET
;
330 offset_check
= localstat
.st_size
- RESUME_CHECK_OFFSET
;
331 if(verbose
)printf("Trying to start resume of %s at "OFF_T_FORMAT
"\n"
332 "At the moment "OFF_T_FORMAT
" of "OFF_T_FORMAT
" bytes have been retrieved\n",
333 newpath
, (OFF_T_FORMAT_CAST
)offset_check
,
334 (OFF_T_FORMAT_CAST
)localstat
.st_size
,
335 (OFF_T_FORMAT_CAST
)remotestat
.st_size
);
340 /* First, check all bytes from offset_check to offset_download */
341 off1
= lseek(localhandle
, offset_check
, SEEK_SET
);
343 fprintf(stderr
, "Can't seek to "OFF_T_FORMAT
" in local file %s\n",
344 (OFF_T_FORMAT_CAST
)offset_check
, newpath
);
345 smbc_close(remotehandle
); close(localhandle
);
349 off2
= smbc_lseek(remotehandle
, offset_check
, SEEK_SET
);
351 fprintf(stderr
, "Can't seek to "OFF_T_FORMAT
" in remote file %s\n",
352 (OFF_T_FORMAT_CAST
)offset_check
, newpath
);
353 smbc_close(remotehandle
); close(localhandle
);
358 fprintf(stderr
, "Offset in local and remote files is different (local: "OFF_T_FORMAT
", remote: "OFF_T_FORMAT
")\n",
359 (OFF_T_FORMAT_CAST
)off1
,
360 (OFF_T_FORMAT_CAST
)off2
);
364 if(smbc_read(remotehandle
, checkbuf
[0], RESUME_CHECK_SIZE
) != RESUME_CHECK_SIZE
) {
365 fprintf(stderr
, "Can't read %d bytes from remote file %s\n", RESUME_CHECK_SIZE
, path
);
366 smbc_close(remotehandle
); close(localhandle
);
370 if(read(localhandle
, checkbuf
[1], RESUME_CHECK_SIZE
) != RESUME_CHECK_SIZE
) {
371 fprintf(stderr
, "Can't read %d bytes from local file %s\n", RESUME_CHECK_SIZE
, name
);
372 smbc_close(remotehandle
); close(localhandle
);
376 if(memcmp(checkbuf
[0], checkbuf
[1], RESUME_CHECK_SIZE
) == 0) {
377 if(verbose
)printf("Current local and remote file appear to be the same. Starting download from offset "OFF_T_FORMAT
"\n", (OFF_T_FORMAT_CAST
)offset_download
);
379 fprintf(stderr
, "Local and remote file appear to be different, not doing resume for %s\n", path
);
380 smbc_close(remotehandle
); close(localhandle
);
385 localhandle
= STDOUT_FILENO
;
391 readbuf
= (char *)SMB_MALLOC(blocksize
);
393 /* Now, download all bytes from offset_download to the end */
394 for(curpos
= offset_download
; curpos
< remotestat
.st_size
; curpos
+=blocksize
) {
395 ssize_t bytesread
= smbc_read(remotehandle
, readbuf
, blocksize
);
397 fprintf(stderr
, "Can't read %u bytes at offset "OFF_T_FORMAT
", file %s\n", (unsigned int)blocksize
, (OFF_T_FORMAT_CAST
)curpos
, path
);
398 smbc_close(remotehandle
);
399 if (localhandle
!= STDOUT_FILENO
) close(localhandle
);
404 total_bytes
+= bytesread
;
406 if(write(localhandle
, readbuf
, bytesread
) < 0) {
407 fprintf(stderr
, "Can't write %u bytes to local file %s at offset "OFF_T_FORMAT
"\n", (unsigned int)bytesread
, path
, (OFF_T_FORMAT_CAST
)curpos
);
409 smbc_close(remotehandle
);
410 if (localhandle
!= STDOUT_FILENO
) close(localhandle
);
414 if(dots
)fputc('.', stderr
);
416 print_progress(newpath
, start_time
, time(NULL
), start_offset
, curpos
, remotestat
.st_size
);
424 printf("%s downloaded\n", path
);
427 fprintf(stderr
, "\r%s", path
);
429 for(i
= strlen(path
); i
< columns
; i
++) {
436 if(keep_permissions
&& !send_stdout
) {
437 if(fchmod(localhandle
, remotestat
.st_mode
) < 0) {
438 fprintf(stderr
, "Unable to change mode of local file %s to %o\n", path
, remotestat
.st_mode
);
439 smbc_close(remotehandle
);
445 smbc_close(remotehandle
);
446 if (localhandle
!= STDOUT_FILENO
) close(localhandle
);
450 void clean_exit(void)
453 human_readable(total_bytes
, bs
, sizeof(bs
));
454 if(!quiet
)fprintf(stderr
, "Downloaded %s in %lu seconds\n", bs
, time(NULL
) - total_start_time
);
458 void signal_quit(int v
)
463 int readrcfile(const char *name
, const struct poptOption long_options
[])
465 FILE *fd
= fopen(name
, "r");
467 char var
[101], val
[101];
469 int *intdata
; char **stringdata
;
471 fprintf(stderr
, "Can't open RC file %s\n", name
);
477 if(fscanf(fd
, "%100s %100s\n", var
, val
) < 2) {
478 fprintf(stderr
, "Can't parse line %d of %s, ignoring.\n", lineno
, name
);
484 for(i
= 0; long_options
[i
].shortName
; i
++) {
485 if(!long_options
[i
].longName
)continue;
486 if(strcmp(long_options
[i
].longName
, var
)) continue;
487 if(!long_options
[i
].arg
)continue;
489 switch(long_options
[i
].argInfo
) {
491 intdata
= (int *)long_options
[i
].arg
;
492 if(!strcmp(val
, "on")) *intdata
= 1;
493 else if(!strcmp(val
, "off")) *intdata
= 0;
494 else fprintf(stderr
, "Illegal value %s for %s at line %d in %s\n", val
, var
, lineno
, name
);
497 intdata
= (int *)long_options
[i
].arg
;
498 *intdata
= atoi(val
);
500 case POPT_ARG_STRING
:
501 stringdata
= (char **)long_options
[i
].arg
;
502 *stringdata
= SMB_STRDUP(val
);
505 fprintf(stderr
, "Invalid variable %s at line %d in %s\n", var
, lineno
, name
);
512 fprintf(stderr
, "Invalid variable %s at line %d in %s\n", var
, lineno
, name
);
520 int main(int argc
, const char **argv
)
523 const char *file
= NULL
;
525 struct poptOption long_options
[] = {
526 {"guest", 'a', POPT_ARG_NONE
, NULL
, 'a', "Work as user guest" },
527 {"resume", 'r', POPT_ARG_NONE
, &_resume
, 0, "Automatically resume aborted files" },
528 {"recursive", 'R', POPT_ARG_NONE
, &_recursive
, 0, "Recursively download files" },
529 {"username", 'u', POPT_ARG_STRING
, &username
, 'u', "Username to use" },
530 {"password", 'p', POPT_ARG_STRING
, &password
, 'p', "Password to use" },
531 {"workgroup", 'w', POPT_ARG_STRING
, &workgroup
, 'w', "Workgroup to use (optional)" },
532 {"nonprompt", 'n', POPT_ARG_NONE
, &nonprompt
, 'n', "Don't ask anything (non-interactive)" },
533 {"debuglevel", 'd', POPT_ARG_INT
, &debuglevel
, 'd', "Debuglevel to use" },
534 {"outputfile", 'o', POPT_ARG_STRING
, &outputfile
, 'o', "Write downloaded data to specified file" },
535 {"stdout", 'O', POPT_ARG_NONE
, &send_stdout
, 'O', "Write data to stdout" },
536 {"dots", 'D', POPT_ARG_NONE
, &dots
, 'D', "Show dots as progress indication" },
537 {"quiet", 'q', POPT_ARG_NONE
, &quiet
, 'q', "Be quiet" },
538 {"verbose", 'v', POPT_ARG_NONE
, &verbose
, 'v', "Be verbose" },
539 {"keep-permissions", 'P', POPT_ARG_NONE
, &keep_permissions
, 'P', "Keep permissions" },
540 {"blocksize", 'b', POPT_ARG_INT
, &blocksize
, 'b', "Change number of bytes in a block"},
541 {"rcfile", 'f', POPT_ARG_STRING
, NULL
, 0, "Use specified rc file"},
549 /* only read rcfile if it exists */
550 asprintf(&rcfile
, "%s/.smbgetrc", getenv("HOME"));
551 if(access(rcfile
, F_OK
) == 0)
552 readrcfile(rcfile
, long_options
);
556 signal(SIGWINCH
, change_columns
);
558 signal(SIGINT
, signal_quit
);
559 signal(SIGTERM
, signal_quit
);
561 pc
= poptGetContext(argv
[0], argc
, argv
, long_options
, 0);
563 while((c
= poptGetNextOpt(pc
)) >= 0) {
566 readrcfile(poptGetOptArg(pc
), long_options
);
569 username
= ""; password
= "";
574 if((send_stdout
|| outputfile
) && _recursive
) {
575 fprintf(stderr
, "The -o or -O and -R options can not be used together.\n");
579 if(outputfile
&& send_stdout
) {
580 fprintf(stderr
, "The -o and -O options cannot be used together.\n");
584 if(smbc_init(get_auth_data
, debuglevel
) < 0) {
585 fprintf(stderr
, "Unable to initialize libsmbclient\n");
589 columns
= get_num_cols();
591 total_start_time
= time(NULL
);
593 while ( (file
= poptGetArg(pc
)) ) {
595 return smb_download_file(file
, "", _recursive
, _resume
, outputfile
);
597 return smb_download_dir(file
, "", _resume
);