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) {
80 snprintf(buffer, l, "%.2fGB", 1.0 * s / (1024 * 1024 * 1024));
81 } else if (s > 1024 * 1024) {
82 snprintf(buffer, l, "%.2fMB", 1.0 * s / (1024 * 1024));
83 } else if (s > 1024) {
84 snprintf(buffer, l, "%.2fkB", 1.0 * s / 1024);
86 snprintf(buffer, l, OFF_T_FORMAT"b", (OFF_T_FORMAT_CAST)s);
90 static void get_auth_data(const char *srv, const char *shr, char *wg, int wglen, char *un, int unlen, char *pw, int pwlen)
92 static char hasasked = 0;
93 char *wgtmp, *usertmp;
99 if(!nonprompt && !username) {
100 printf("Username for %s at %s [guest] ", shr, srv);
101 if (fgets(tmp, sizeof(tmp), stdin) == NULL) {
104 if ((strlen(tmp) > 0) && (tmp[strlen(tmp)-1] == '\n')) {
105 tmp[strlen(tmp)-1] = '\0';
107 strncpy(un, tmp, unlen-1);
108 } else if(username) strncpy(un, username, unlen-1);
110 if(!nonprompt && !password) {
112 if (asprintf(&prompt, "Password for %s at %s: ", shr, srv) == -1) {
115 pass = getpass(prompt);
117 strncpy(pw, pass, pwlen-1);
118 } else if(password) strncpy(pw, password, pwlen-1);
120 if(workgroup)strncpy(wg, workgroup, wglen-1);
122 wgtmp = SMB_STRNDUP(wg, wglen);
123 usertmp = SMB_STRNDUP(un, unlen);
124 if(!quiet)printf("Using workgroup %s, %s%s\n", wgtmp, *usertmp?"user ":"guest user", usertmp);
125 free(wgtmp); free(usertmp);
128 /* Return 1 on error, 0 on success. */
130 static int smb_download_dir(const char *base, const char *name, int resume)
132 char path[SMB_MAXPATHLEN];
134 struct smbc_dirent *dirent;
135 const char *relname = name;
137 struct stat remotestat;
140 snprintf(path, SMB_MAXPATHLEN-1, "%s%s%s", base, (base[0] && name[0] && name[0] != '/' && base[strlen(base)-1] != '/')?"/":"", name);
142 /* List files in directory and call smb_download_file on them */
143 dirhandle = smbc_opendir(path);
145 if (errno == ENOTDIR) {
146 return smb_download_file(base, name, 1, resume,
149 fprintf(stderr, "Can't open directory %s: %s\n", path, strerror(errno));
153 while(*relname == '/')relname++;
154 mkdir(relname, 0755);
156 tmpname = SMB_STRDUP(name);
158 while((dirent = smbc_readdir(dirhandle))) {
160 if(!strcmp(dirent->name, ".") || !strcmp(dirent->name, ".."))continue;
161 if (asprintf(&newname, "%s/%s", tmpname, dirent->name) == -1) {
164 switch(dirent->smbc_type) {
166 ret = smb_download_dir(base, newname, resume);
170 ret = smb_download_dir("smb://", dirent->name, resume);
174 ret = smb_download_dir("smb://", dirent->name, resume);
178 ret = smb_download_file(base, newname, 1, resume, 0,
182 case SMBC_FILE_SHARE:
183 ret = smb_download_dir(base, newname, resume);
186 case SMBC_PRINTER_SHARE:
187 if(!quiet)printf("Ignoring printer share %s\n", dirent->name);
190 case SMBC_COMMS_SHARE:
191 if(!quiet)printf("Ignoring comms share %s\n", dirent->name);
195 if(!quiet)printf("Ignoring ipc$ share %s\n", dirent->name);
199 fprintf(stderr, "Ignoring file '%s' of type '%d'\n", newname, dirent->smbc_type);
206 if(keep_permissions) {
207 if(smbc_fstat(dirhandle, &remotestat) < 0) {
208 fprintf(stderr, "Unable to get stats on %s on remote server\n", path);
209 smbc_closedir(dirhandle);
213 if(chmod(relname, remotestat.st_mode) < 0) {
214 fprintf(stderr, "Unable to change mode of local dir %s to %o\n", relname,
215 (unsigned int)remotestat.st_mode);
216 smbc_closedir(dirhandle);
221 smbc_closedir(dirhandle);
225 static char *print_time(long t)
227 static char buffer[100];
228 int secs, mins, hours;
230 strncpy(buffer, "Unknown", sizeof(buffer));
235 mins = (int)t / 60 % 60;
236 hours = (int)t / (60 * 60);
237 snprintf(buffer, sizeof(buffer)-1, "%02d:%02d:%02d", hours, mins, secs);
241 static void print_progress(const char *name, time_t start, time_t now, off_t start_pos, off_t pos, off_t total)
246 char hpos[20], htotal[20], havg[20];
247 char *status, *filename;
249 if(now - start)avg = 1.0 * (pos - start_pos) / (now - start);
250 eta = (total - pos) / avg;
251 if(total)prcnt = 100.0 * pos / total;
253 human_readable(pos, hpos, sizeof(hpos));
254 human_readable(total, htotal, sizeof(htotal));
255 human_readable(avg, havg, sizeof(havg));
257 len = asprintf(&status, "%s of %s (%.2f%%) at %s/s ETA: %s", hpos, htotal, prcnt, havg, print_time(eta));
263 int required = strlen(name), available = columns - len - strlen("[] ");
264 if(required > available) {
265 if (asprintf(&filename, "...%s", name + required - available + 3) == -1) {
269 filename = SMB_STRNDUP(name, available);
271 } else filename = SMB_STRDUP(name);
273 fprintf(stderr, "\r[%s] %s", filename, status);
275 free(filename); free(status);
278 /* Return 1 on error, 0 on success. */
280 static int smb_download_file(const char *base, const char *name, int recursive,
281 int resume, int toplevel, char *outfile)
283 int remotehandle, localhandle;
284 time_t start_time = time_mono(NULL);
286 char path[SMB_MAXPATHLEN];
287 char checkbuf[2][RESUME_CHECK_SIZE];
288 char *readbuf = NULL;
289 off_t offset_download = 0, offset_check = 0, curpos = 0, start_offset = 0;
290 struct stat localstat, remotestat;
292 snprintf(path, SMB_MAXPATHLEN-1, "%s%s%s", base, (*base && *name && name[0] != '/' && base[strlen(base)-1] != '/')?"/":"", name);
294 remotehandle = smbc_open(path, O_RDONLY, 0755);
296 if(remotehandle < 0) {
300 fprintf(stderr, "%s is a directory. Specify -R to download recursively\n", path);
303 return smb_download_dir(base, name, resume);
306 fprintf(stderr, "%s can't be found on the remote server\n", path);
310 fprintf(stderr, "Not enough memory\n");
314 fprintf(stderr, "The share name used in %s does not exist\n", path);
318 fprintf(stderr, "You don't have enough permissions to access %s\n", path);
327 if(smbc_fstat(remotehandle, &remotestat) < 0) {
328 fprintf(stderr, "Can't stat %s: %s\n", path, strerror(errno));
332 if(outfile) newpath = outfile;
334 newpath = strrchr(base, '/');
335 if(newpath)newpath++; else newpath = base;
336 } else newpath = name;
338 if (!toplevel && (newpath[0] == '/')) {
342 /* Open local file according to the mode */
344 /* if it is up-to-date, skip */
345 if(stat(newpath, &localstat) == 0 &&
346 localstat.st_mtime >= remotestat.st_mtime) {
348 printf("%s is up-to-date, skipping\n", newpath);
349 smbc_close(remotehandle);
352 /* else open it for writing and truncate if it exists */
353 localhandle = open(newpath, O_CREAT | O_NONBLOCK | O_RDWR | O_TRUNC, 0775);
354 if(localhandle < 0) {
355 fprintf(stderr, "Can't open %s : %s\n", newpath,
357 smbc_close(remotehandle);
361 } else if(!send_stdout) {
362 localhandle = open(newpath, O_CREAT | O_NONBLOCK | O_RDWR | (!resume?O_EXCL:0), 0755);
363 if(localhandle < 0) {
364 fprintf(stderr, "Can't open %s: %s\n", newpath, strerror(errno));
365 smbc_close(remotehandle);
369 if (fstat(localhandle, &localstat) != 0) {
370 fprintf(stderr, "Can't fstat %s: %s\n", newpath, strerror(errno));
371 smbc_close(remotehandle);
376 start_offset = localstat.st_size;
378 if(localstat.st_size && localstat.st_size == remotestat.st_size) {
379 if(verbose)fprintf(stderr, "%s is already downloaded completely.\n", path);
380 else if(!quiet)fprintf(stderr, "%s\n", path);
381 smbc_close(remotehandle);
386 if(localstat.st_size > RESUME_CHECK_OFFSET && remotestat.st_size > RESUME_CHECK_OFFSET) {
387 offset_download = localstat.st_size - RESUME_DOWNLOAD_OFFSET;
388 offset_check = localstat.st_size - RESUME_CHECK_OFFSET;
389 if(verbose)printf("Trying to start resume of %s at "OFF_T_FORMAT"\n"
390 "At the moment "OFF_T_FORMAT" of "OFF_T_FORMAT" bytes have been retrieved\n",
391 newpath, (OFF_T_FORMAT_CAST)offset_check,
392 (OFF_T_FORMAT_CAST)localstat.st_size,
393 (OFF_T_FORMAT_CAST)remotestat.st_size);
398 /* First, check all bytes from offset_check to offset_download */
399 off1 = lseek(localhandle, offset_check, SEEK_SET);
401 fprintf(stderr, "Can't seek to "OFF_T_FORMAT" in local file %s\n",
402 (OFF_T_FORMAT_CAST)offset_check, newpath);
403 smbc_close(remotehandle); close(localhandle);
407 off2 = smbc_lseek(remotehandle, offset_check, SEEK_SET);
409 fprintf(stderr, "Can't seek to "OFF_T_FORMAT" in remote file %s\n",
410 (OFF_T_FORMAT_CAST)offset_check, newpath);
411 smbc_close(remotehandle); close(localhandle);
416 fprintf(stderr, "Offset in local and remote files is different (local: "OFF_T_FORMAT", remote: "OFF_T_FORMAT")\n",
417 (OFF_T_FORMAT_CAST)off1,
418 (OFF_T_FORMAT_CAST)off2);
419 smbc_close(remotehandle); close(localhandle);
423 if(smbc_read(remotehandle, checkbuf[0], RESUME_CHECK_SIZE) != RESUME_CHECK_SIZE) {
424 fprintf(stderr, "Can't read %d bytes from remote file %s\n", RESUME_CHECK_SIZE, path);
425 smbc_close(remotehandle); close(localhandle);
429 if(read(localhandle, checkbuf[1], RESUME_CHECK_SIZE) != RESUME_CHECK_SIZE) {
430 fprintf(stderr, "Can't read %d bytes from local file %s\n", RESUME_CHECK_SIZE, name);
431 smbc_close(remotehandle); close(localhandle);
435 if(memcmp(checkbuf[0], checkbuf[1], RESUME_CHECK_SIZE) == 0) {
436 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);
438 fprintf(stderr, "Local and remote file appear to be different, not doing resume for %s\n", path);
439 smbc_close(remotehandle); close(localhandle);
444 localhandle = STDOUT_FILENO;
450 readbuf = (char *)SMB_MALLOC(blocksize);
455 /* Now, download all bytes from offset_download to the end */
456 for(curpos = offset_download; curpos < remotestat.st_size; curpos+=blocksize) {
457 ssize_t bytesread = smbc_read(remotehandle, readbuf, blocksize);
459 fprintf(stderr, "Can't read %u bytes at offset "OFF_T_FORMAT", file %s\n", (unsigned int)blocksize, (OFF_T_FORMAT_CAST)curpos, path);
460 smbc_close(remotehandle);
461 if (localhandle != STDOUT_FILENO) close(localhandle);
466 total_bytes += bytesread;
468 if(write(localhandle, readbuf, bytesread) < 0) {
469 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);
471 smbc_close(remotehandle);
472 if (localhandle != STDOUT_FILENO) close(localhandle);
476 if(dots)fputc('.', stderr);
478 print_progress(newpath, start_time, time_mono(NULL),
479 start_offset, curpos, remotestat.st_size);
487 printf("%s downloaded\n", path);
490 fprintf(stderr, "\r%s", path);
492 for(i = strlen(path); i < columns; i++) {
499 if(keep_permissions && !send_stdout) {
500 if(fchmod(localhandle, remotestat.st_mode) < 0) {
501 fprintf(stderr, "Unable to change mode of local file %s to %o\n", path,
502 (unsigned int)remotestat.st_mode);
503 smbc_close(remotehandle);
509 smbc_close(remotehandle);
510 if (localhandle != STDOUT_FILENO) close(localhandle);
514 static void clean_exit(void)
517 human_readable(total_bytes, bs, sizeof(bs));
518 if(!quiet)fprintf(stderr, "Downloaded %s in %lu seconds\n", bs,
519 (unsigned long)(time_mono(NULL) - total_start_time));
523 static void signal_quit(int v)
528 static int readrcfile(const char *name, const struct poptOption long_options[])
530 FILE *fd = fopen(name, "r");
532 char var[101], val[101];
534 int *intdata; char **stringdata;
536 fprintf(stderr, "Can't open RC file %s\n", name);
542 if(fscanf(fd, "%100s %100s\n", var, val) < 2) {
543 fprintf(stderr, "Can't parse line %d of %s, ignoring.\n", lineno, name);
549 for(i = 0; long_options[i].shortName; i++) {
550 if(!long_options[i].longName)continue;
551 if(strcmp(long_options[i].longName, var)) continue;
552 if(!long_options[i].arg)continue;
554 switch(long_options[i].argInfo) {
556 intdata = (int *)long_options[i].arg;
557 if(!strcmp(val, "on")) *intdata = 1;
558 else if(!strcmp(val, "off")) *intdata = 0;
559 else fprintf(stderr, "Illegal value %s for %s at line %d in %s\n", val, var, lineno, name);
562 intdata = (int *)long_options[i].arg;
563 *intdata = atoi(val);
565 case POPT_ARG_STRING:
566 stringdata = (char **)long_options[i].arg;
567 *stringdata = SMB_STRDUP(val);
570 fprintf(stderr, "Invalid variable %s at line %d in %s\n", var, lineno, name);
577 fprintf(stderr, "Invalid variable %s at line %d in %s\n", var, lineno, name);
585 int main(int argc, const char **argv)
588 const char *file = NULL;
590 bool smb_encrypt = false;
591 int resume = 0, recursive = 0;
592 TALLOC_CTX *frame = talloc_stackframe();
594 struct poptOption long_options[] = {
595 {"guest", 'a', POPT_ARG_NONE, NULL, 'a', "Work as user guest" },
596 {"encrypt", 'e', POPT_ARG_NONE, NULL, 'e', "Encrypt SMB transport (UNIX extended servers only)" },
597 {"resume", 'r', POPT_ARG_NONE, &resume, 0, "Automatically resume aborted files" },
598 {"update", 'U', POPT_ARG_NONE, &update, 0, "Download only when remote file is newer than local file or local file is missing"},
599 {"recursive", 'R', POPT_ARG_NONE, &recursive, 0, "Recursively download files" },
600 {"username", 'u', POPT_ARG_STRING, &username, 'u', "Username to use" },
601 {"password", 'p', POPT_ARG_STRING, &password, 'p', "Password to use" },
602 {"workgroup", 'w', POPT_ARG_STRING, &workgroup, 'w', "Workgroup to use (optional)" },
603 {"nonprompt", 'n', POPT_ARG_NONE, &nonprompt, 'n', "Don't ask anything (non-interactive)" },
604 {"debuglevel", 'd', POPT_ARG_INT, &debuglevel, 'd', "Debuglevel to use" },
605 {"outputfile", 'o', POPT_ARG_STRING, &outputfile, 'o', "Write downloaded data to specified file" },
606 {"stdout", 'O', POPT_ARG_NONE, &send_stdout, 'O', "Write data to stdout" },
607 {"dots", 'D', POPT_ARG_NONE, &dots, 'D', "Show dots as progress indication" },
608 {"quiet", 'q', POPT_ARG_NONE, &quiet, 'q', "Be quiet" },
609 {"verbose", 'v', POPT_ARG_NONE, &verbose, 'v', "Be verbose" },
610 {"keep-permissions", 'P', POPT_ARG_NONE, &keep_permissions, 'P', "Keep permissions" },
611 {"blocksize", 'b', POPT_ARG_INT, &blocksize, 'b', "Change number of bytes in a block"},
612 {"rcfile", 'f', POPT_ARG_STRING, NULL, 'f', "Use specified rc file"},
620 /* only read rcfile if it exists */
621 if (asprintf(&rcfile, "%s/.smbgetrc", getenv("HOME")) == -1) {
624 if(access(rcfile, F_OK) == 0)
625 readrcfile(rcfile, long_options);
629 signal(SIGWINCH, change_columns);
631 signal(SIGINT, signal_quit);
632 signal(SIGTERM, signal_quit);
634 pc = poptGetContext(argv[0], argc, argv, long_options, 0);
636 while((c = poptGetNextOpt(pc)) >= 0) {
639 readrcfile(poptGetOptArg(pc), long_options);
642 username = ""; password = "";
650 if((send_stdout || resume || outputfile) && update) {
651 fprintf(stderr, "The -o, -R or -O and -U options can not be used together.\n");
654 if((send_stdout || outputfile) && recursive) {
655 fprintf(stderr, "The -o or -O and -R options can not be used together.\n");
659 if(outputfile && send_stdout) {
660 fprintf(stderr, "The -o and -O options cannot be used together.\n");
664 if(smbc_init(get_auth_data, debuglevel) < 0) {
665 fprintf(stderr, "Unable to initialize libsmbclient\n");
670 SMBCCTX *smb_ctx = smbc_set_context(NULL);
671 smbc_option_set(smb_ctx,
672 CONST_DISCARD(char *, "smb_encrypt_level"),
676 columns = get_num_cols();
678 total_start_time = time_mono(NULL);
680 while ( (file = poptGetArg(pc)) ) {
682 ret = smb_download_file(file, "", recursive, resume,
685 ret = smb_download_dir(file, "", resume);