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 3 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, see <http://www.gnu.org/licenses/>. */
20 #include "popt_common.h"
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
31 static int columns = 0;
33 static int debuglevel, update;
34 static char *outputfile;
37 static time_t total_start_time = 0;
38 static 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 static const char *username = NULL, *password = NULL, *workgroup = NULL;
50 static int nonprompt = 0, quiet = 0, dots = 0, keep_permissions = 0, verbose = 0, send_stdout = 0;
51 static int blocksize = SMB_DEFAULT_BLOCKSIZE;
53 static int smb_download_file(const char *base, const char *name, int recursive,
54 int resume, int toplevel, char *outfile);
56 static int get_num_cols(void)
60 if(ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) < 0) {
65 #warning No support for TIOCGWINSZ
66 char *cols = getenv("COLUMNS");
72 static void change_columns(int sig)
74 columns = get_num_cols();
77 static void human_readable(off_t s, char *buffer, int l)
79 if(s > 1024 * 1024 * 1024) snprintf(buffer, l, "%.2fGb", 1.0 * s / (1024 * 1024 * 1024));
80 else if(s > 1024 * 1024) snprintf(buffer, l, "%.2fMb", 1.0 * s / (1024 * 1024));
81 else if(s > 1024) snprintf(buffer, l, "%.2fkb", 1.0 * s / 1024);
82 else snprintf(buffer, l, OFF_T_FORMAT"b", (OFF_T_FORMAT_CAST)s);
85 static void get_auth_data(const char *srv, const char *shr, char *wg, int wglen, char *un, int unlen, char *pw, int pwlen)
87 static char hasasked = 0;
88 char *wgtmp, *usertmp;
94 if(!nonprompt && !username) {
95 printf("Username for %s at %s [guest] ", shr, srv);
96 if (fgets(tmp, sizeof(tmp), stdin) == NULL) {
99 if ((strlen(tmp) > 0) && (tmp[strlen(tmp)-1] == '\n')) {
100 tmp[strlen(tmp)-1] = '\0';
102 strncpy(un, tmp, unlen-1);
103 } else if(username) strncpy(un, username, unlen-1);
105 if(!nonprompt && !password) {
107 if (asprintf(&prompt, "Password for %s at %s: ", shr, srv) == -1) {
110 pass = getpass(prompt);
112 strncpy(pw, pass, pwlen-1);
113 } else if(password) strncpy(pw, password, pwlen-1);
115 if(workgroup)strncpy(wg, workgroup, wglen-1);
117 wgtmp = SMB_STRNDUP(wg, wglen);
118 usertmp = SMB_STRNDUP(un, unlen);
119 if(!quiet)printf("Using workgroup %s, %s%s\n", wgtmp, *usertmp?"user ":"guest user", usertmp);
120 free(wgtmp); free(usertmp);
123 /* Return 1 on error, 0 on success. */
125 static int smb_download_dir(const char *base, const char *name, int resume)
127 char path[SMB_MAXPATHLEN];
129 struct smbc_dirent *dirent;
130 const char *relname = name;
132 struct stat remotestat;
135 snprintf(path, SMB_MAXPATHLEN-1, "%s%s%s", base, (base[0] && name[0] && name[0] != '/' && base[strlen(base)-1] != '/')?"/":"", name);
137 /* List files in directory and call smb_download_file on them */
138 dirhandle = smbc_opendir(path);
140 if (errno == ENOTDIR) {
141 return smb_download_file(base, name, 1, resume,
144 fprintf(stderr, "Can't open directory %s: %s\n", path, strerror(errno));
148 while(*relname == '/')relname++;
149 mkdir(relname, 0755);
151 tmpname = SMB_STRDUP(name);
153 while((dirent = smbc_readdir(dirhandle))) {
155 if(!strcmp(dirent->name, ".") || !strcmp(dirent->name, ".."))continue;
156 if (asprintf(&newname, "%s/%s", tmpname, dirent->name) == -1) {
159 switch(dirent->smbc_type) {
161 ret = smb_download_dir(base, newname, resume);
165 ret = smb_download_dir("smb://", dirent->name, resume);
169 ret = smb_download_dir("smb://", dirent->name, resume);
173 ret = smb_download_file(base, newname, 1, resume, 0,
177 case SMBC_FILE_SHARE:
178 ret = smb_download_dir(base, newname, resume);
181 case SMBC_PRINTER_SHARE:
182 if(!quiet)printf("Ignoring printer share %s\n", dirent->name);
185 case SMBC_COMMS_SHARE:
186 if(!quiet)printf("Ignoring comms share %s\n", dirent->name);
190 if(!quiet)printf("Ignoring ipc$ share %s\n", dirent->name);
194 fprintf(stderr, "Ignoring file '%s' of type '%d'\n", newname, dirent->smbc_type);
201 if(keep_permissions) {
202 if(smbc_fstat(dirhandle, &remotestat) < 0) {
203 fprintf(stderr, "Unable to get stats on %s on remote server\n", path);
204 smbc_closedir(dirhandle);
208 if(chmod(relname, remotestat.st_mode) < 0) {
209 fprintf(stderr, "Unable to change mode of local dir %s to %o\n", relname,
210 (unsigned int)remotestat.st_mode);
211 smbc_closedir(dirhandle);
216 smbc_closedir(dirhandle);
220 static char *print_time(long t)
222 static char buffer[100];
223 int secs, mins, hours;
225 strncpy(buffer, "Unknown", sizeof(buffer));
230 mins = (int)t / 60 % 60;
231 hours = (int)t / (60 * 60);
232 snprintf(buffer, sizeof(buffer)-1, "%02d:%02d:%02d", hours, mins, secs);
236 static void print_progress(const char *name, time_t start, time_t now, off_t start_pos, off_t pos, off_t total)
241 char hpos[20], htotal[20], havg[20];
242 char *status, *filename;
244 if(now - start)avg = 1.0 * (pos - start_pos) / (now - start);
245 eta = (total - pos) / avg;
246 if(total)prcnt = 100.0 * pos / total;
248 human_readable(pos, hpos, sizeof(hpos));
249 human_readable(total, htotal, sizeof(htotal));
250 human_readable(avg, havg, sizeof(havg));
252 len = asprintf(&status, "%s of %s (%.2f%%) at %s/s ETA: %s", hpos, htotal, prcnt, havg, print_time(eta));
258 int required = strlen(name), available = columns - len - strlen("[] ");
259 if(required > available) {
260 if (asprintf(&filename, "...%s", name + required - available + 3) == -1) {
264 filename = SMB_STRNDUP(name, available);
266 } else filename = SMB_STRDUP(name);
268 fprintf(stderr, "\r[%s] %s", filename, status);
270 free(filename); free(status);
273 /* Return 1 on error, 0 on success. */
275 static int smb_download_file(const char *base, const char *name, int recursive,
276 int resume, int toplevel, char *outfile)
278 int remotehandle, localhandle;
279 time_t start_time = time_mono(NULL);
281 char path[SMB_MAXPATHLEN];
282 char checkbuf[2][RESUME_CHECK_SIZE];
283 char *readbuf = NULL;
284 off_t offset_download = 0, offset_check = 0, curpos = 0, start_offset = 0;
285 struct stat localstat, remotestat;
287 snprintf(path, SMB_MAXPATHLEN-1, "%s%s%s", base, (*base && *name && name[0] != '/' && base[strlen(base)-1] != '/')?"/":"", name);
289 remotehandle = smbc_open(path, O_RDONLY, 0755);
291 if(remotehandle < 0) {
295 fprintf(stderr, "%s is a directory. Specify -R to download recursively\n", path);
298 return smb_download_dir(base, name, resume);
301 fprintf(stderr, "%s can't be found on the remote server\n", path);
305 fprintf(stderr, "Not enough memory\n");
309 fprintf(stderr, "The share name used in %s does not exist\n", path);
313 fprintf(stderr, "You don't have enough permissions to access %s\n", path);
322 if(smbc_fstat(remotehandle, &remotestat) < 0) {
323 fprintf(stderr, "Can't stat %s: %s\n", path, strerror(errno));
327 if(outfile) newpath = outfile;
329 newpath = strrchr(base, '/');
330 if(newpath)newpath++; else newpath = base;
331 } else newpath = name;
333 if (!toplevel && (newpath[0] == '/')) {
337 /* Open local file according to the mode */
339 /* if it is up-to-date, skip */
340 if(stat(newpath, &localstat) == 0 &&
341 localstat.st_mtime >= remotestat.st_mtime) {
343 printf("%s is up-to-date, skipping\n", newpath);
344 smbc_close(remotehandle);
347 /* else open it for writing and truncate if it exists */
348 localhandle = open(newpath, O_CREAT | O_NONBLOCK | O_RDWR | O_TRUNC, 0775);
349 if(localhandle < 0) {
350 fprintf(stderr, "Can't open %s : %s\n", newpath,
352 smbc_close(remotehandle);
356 } else if(!send_stdout) {
357 localhandle = open(newpath, O_CREAT | O_NONBLOCK | O_RDWR | (!resume?O_EXCL:0), 0755);
358 if(localhandle < 0) {
359 fprintf(stderr, "Can't open %s: %s\n", newpath, strerror(errno));
360 smbc_close(remotehandle);
364 if (fstat(localhandle, &localstat) != 0) {
365 fprintf(stderr, "Can't fstat %s: %s\n", newpath, strerror(errno));
366 smbc_close(remotehandle);
371 start_offset = localstat.st_size;
373 if(localstat.st_size && localstat.st_size == remotestat.st_size) {
374 if(verbose)fprintf(stderr, "%s is already downloaded completely.\n", path);
375 else if(!quiet)fprintf(stderr, "%s\n", path);
376 smbc_close(remotehandle);
381 if(localstat.st_size > RESUME_CHECK_OFFSET && remotestat.st_size > RESUME_CHECK_OFFSET) {
382 offset_download = localstat.st_size - RESUME_DOWNLOAD_OFFSET;
383 offset_check = localstat.st_size - RESUME_CHECK_OFFSET;
384 if(verbose)printf("Trying to start resume of %s at "OFF_T_FORMAT"\n"
385 "At the moment "OFF_T_FORMAT" of "OFF_T_FORMAT" bytes have been retrieved\n",
386 newpath, (OFF_T_FORMAT_CAST)offset_check,
387 (OFF_T_FORMAT_CAST)localstat.st_size,
388 (OFF_T_FORMAT_CAST)remotestat.st_size);
393 /* First, check all bytes from offset_check to offset_download */
394 off1 = lseek(localhandle, offset_check, SEEK_SET);
396 fprintf(stderr, "Can't seek to "OFF_T_FORMAT" in local file %s\n",
397 (OFF_T_FORMAT_CAST)offset_check, newpath);
398 smbc_close(remotehandle); close(localhandle);
402 off2 = smbc_lseek(remotehandle, offset_check, SEEK_SET);
404 fprintf(stderr, "Can't seek to "OFF_T_FORMAT" in remote file %s\n",
405 (OFF_T_FORMAT_CAST)offset_check, newpath);
406 smbc_close(remotehandle); close(localhandle);
411 fprintf(stderr, "Offset in local and remote files is different (local: "OFF_T_FORMAT", remote: "OFF_T_FORMAT")\n",
412 (OFF_T_FORMAT_CAST)off1,
413 (OFF_T_FORMAT_CAST)off2);
417 if(smbc_read(remotehandle, checkbuf[0], RESUME_CHECK_SIZE) != RESUME_CHECK_SIZE) {
418 fprintf(stderr, "Can't read %d bytes from remote file %s\n", RESUME_CHECK_SIZE, path);
419 smbc_close(remotehandle); close(localhandle);
423 if(read(localhandle, checkbuf[1], RESUME_CHECK_SIZE) != RESUME_CHECK_SIZE) {
424 fprintf(stderr, "Can't read %d bytes from local file %s\n", RESUME_CHECK_SIZE, name);
425 smbc_close(remotehandle); close(localhandle);
429 if(memcmp(checkbuf[0], checkbuf[1], RESUME_CHECK_SIZE) == 0) {
430 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);
432 fprintf(stderr, "Local and remote file appear to be different, not doing resume for %s\n", path);
433 smbc_close(remotehandle); close(localhandle);
438 localhandle = STDOUT_FILENO;
444 readbuf = (char *)SMB_MALLOC(blocksize);
449 /* Now, download all bytes from offset_download to the end */
450 for(curpos = offset_download; curpos < remotestat.st_size; curpos+=blocksize) {
451 ssize_t bytesread = smbc_read(remotehandle, readbuf, blocksize);
453 fprintf(stderr, "Can't read %u bytes at offset "OFF_T_FORMAT", file %s\n", (unsigned int)blocksize, (OFF_T_FORMAT_CAST)curpos, path);
454 smbc_close(remotehandle);
455 if (localhandle != STDOUT_FILENO) close(localhandle);
460 total_bytes += bytesread;
462 if(write(localhandle, readbuf, bytesread) < 0) {
463 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);
465 smbc_close(remotehandle);
466 if (localhandle != STDOUT_FILENO) close(localhandle);
470 if(dots)fputc('.', stderr);
472 print_progress(newpath, start_time, time_mono(NULL),
473 start_offset, curpos, remotestat.st_size);
481 printf("%s downloaded\n", path);
484 fprintf(stderr, "\r%s", path);
486 for(i = strlen(path); i < columns; i++) {
493 if(keep_permissions && !send_stdout) {
494 if(fchmod(localhandle, remotestat.st_mode) < 0) {
495 fprintf(stderr, "Unable to change mode of local file %s to %o\n", path,
496 (unsigned int)remotestat.st_mode);
497 smbc_close(remotehandle);
503 smbc_close(remotehandle);
504 if (localhandle != STDOUT_FILENO) close(localhandle);
508 static void clean_exit(void)
511 human_readable(total_bytes, bs, sizeof(bs));
512 if(!quiet)fprintf(stderr, "Downloaded %s in %lu seconds\n", bs,
513 (unsigned long)(time_mono(NULL) - total_start_time));
517 static void signal_quit(int v)
522 static int readrcfile(const char *name, const struct poptOption long_options[])
524 FILE *fd = fopen(name, "r");
526 char var[101], val[101];
528 int *intdata; char **stringdata;
530 fprintf(stderr, "Can't open RC file %s\n", name);
536 if(fscanf(fd, "%100s %100s\n", var, val) < 2) {
537 fprintf(stderr, "Can't parse line %d of %s, ignoring.\n", lineno, name);
543 for(i = 0; long_options[i].shortName; i++) {
544 if(!long_options[i].longName)continue;
545 if(strcmp(long_options[i].longName, var)) continue;
546 if(!long_options[i].arg)continue;
548 switch(long_options[i].argInfo) {
550 intdata = (int *)long_options[i].arg;
551 if(!strcmp(val, "on")) *intdata = 1;
552 else if(!strcmp(val, "off")) *intdata = 0;
553 else fprintf(stderr, "Illegal value %s for %s at line %d in %s\n", val, var, lineno, name);
556 intdata = (int *)long_options[i].arg;
557 *intdata = atoi(val);
559 case POPT_ARG_STRING:
560 stringdata = (char **)long_options[i].arg;
561 *stringdata = SMB_STRDUP(val);
564 fprintf(stderr, "Invalid variable %s at line %d in %s\n", var, lineno, name);
571 fprintf(stderr, "Invalid variable %s at line %d in %s\n", var, lineno, name);
579 int main(int argc, const char **argv)
582 const char *file = NULL;
584 bool smb_encrypt = false;
585 int resume = 0, recursive = 0;
586 TALLOC_CTX *frame = talloc_stackframe();
588 struct poptOption long_options[] = {
589 {"guest", 'a', POPT_ARG_NONE, NULL, 'a', "Work as user guest" },
590 {"encrypt", 'e', POPT_ARG_NONE, NULL, 'e', "Encrypt SMB transport (UNIX extended servers only)" },
591 {"resume", 'r', POPT_ARG_NONE, &resume, 0, "Automatically resume aborted files" },
592 {"update", 'U', POPT_ARG_NONE, &update, 0, "Download only when remote file is newer than local file or local file is missing"},
593 {"recursive", 'R', POPT_ARG_NONE, &recursive, 0, "Recursively download files" },
594 {"username", 'u', POPT_ARG_STRING, &username, 'u', "Username to use" },
595 {"password", 'p', POPT_ARG_STRING, &password, 'p', "Password to use" },
596 {"workgroup", 'w', POPT_ARG_STRING, &workgroup, 'w', "Workgroup to use (optional)" },
597 {"nonprompt", 'n', POPT_ARG_NONE, &nonprompt, 'n', "Don't ask anything (non-interactive)" },
598 {"debuglevel", 'd', POPT_ARG_INT, &debuglevel, 'd', "Debuglevel to use" },
599 {"outputfile", 'o', POPT_ARG_STRING, &outputfile, 'o', "Write downloaded data to specified file" },
600 {"stdout", 'O', POPT_ARG_NONE, &send_stdout, 'O', "Write data to stdout" },
601 {"dots", 'D', POPT_ARG_NONE, &dots, 'D', "Show dots as progress indication" },
602 {"quiet", 'q', POPT_ARG_NONE, &quiet, 'q', "Be quiet" },
603 {"verbose", 'v', POPT_ARG_NONE, &verbose, 'v', "Be verbose" },
604 {"keep-permissions", 'P', POPT_ARG_NONE, &keep_permissions, 'P', "Keep permissions" },
605 {"blocksize", 'b', POPT_ARG_INT, &blocksize, 'b', "Change number of bytes in a block"},
606 {"rcfile", 'f', POPT_ARG_STRING, NULL, 'f', "Use specified rc file"},
614 /* only read rcfile if it exists */
615 if (asprintf(&rcfile, "%s/.smbgetrc", getenv("HOME")) == -1) {
618 if(access(rcfile, F_OK) == 0)
619 readrcfile(rcfile, long_options);
623 signal(SIGWINCH, change_columns);
625 signal(SIGINT, signal_quit);
626 signal(SIGTERM, signal_quit);
628 pc = poptGetContext(argv[0], argc, argv, long_options, 0);
630 while((c = poptGetNextOpt(pc)) >= 0) {
633 readrcfile(poptGetOptArg(pc), long_options);
636 username = ""; password = "";
644 if((send_stdout || resume || outputfile) && update) {
645 fprintf(stderr, "The -o, -R or -O and -U options can not be used together.\n");
648 if((send_stdout || outputfile) && recursive) {
649 fprintf(stderr, "The -o or -O and -R options can not be used together.\n");
653 if(outputfile && send_stdout) {
654 fprintf(stderr, "The -o and -O options cannot be used together.\n");
658 if(smbc_init(get_auth_data, debuglevel) < 0) {
659 fprintf(stderr, "Unable to initialize libsmbclient\n");
664 SMBCCTX *smb_ctx = smbc_set_context(NULL);
665 smbc_option_set(smb_ctx,
666 CONST_DISCARD(char *, "smb_encrypt_level"),
670 columns = get_num_cols();
672 total_start_time = time_mono(NULL);
674 while ( (file = poptGetArg(pc)) ) {
676 ret = smb_download_file(file, "", recursive, resume,
679 ret = smb_download_dir(file, "", resume);