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smbget: a wget-like utility with support for recursive downloading and
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Copyright (C) 2003-2004 Jelmer Vernooij <jelmer@samba.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "libsmbclient.h"
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#if _FILE_OFFSET_BITS==64
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#define OFF_T_FORMAT "%lld"
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#define OFF_T_FORMAT_CAST long long
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#define OFF_T_FORMAT "%ld"
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#define OFF_T_FORMAT_CAST long
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static int _resume, _recursive, debuglevel;
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static char *outputfile;
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time_t total_start_time = 0;
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off_t total_bytes = 0;
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#define SMB_MAXPATHLEN MAXPATHLEN
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/* Number of bytes to read when checking whether local and remote file are really the same file */
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#define RESUME_CHECK_SIZE 512
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#define RESUME_DOWNLOAD_OFFSET 1024
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#define RESUME_CHECK_OFFSET RESUME_DOWNLOAD_OFFSET+RESUME_CHECK_SIZE
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/* Number of bytes to read at once */
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#define SMB_DEFAULT_BLOCKSIZE 64000
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const char *username = NULL, *password = NULL, *workgroup = NULL;
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int nonprompt = 0, quiet = 0, dots = 0, keep_permissions = 0, verbose = 0, send_stdout = 0;
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int blocksize = SMB_DEFAULT_BLOCKSIZE;
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int smb_download_file(const char *base, const char *name, int recursive, int resume, char *outfile);
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int get_num_cols(void)
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if(ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) < 0) {
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#warning No support for TIOCGWINSZ
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char *cols = getenv("COLUMNS");
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void change_columns(int sig)
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columns = get_num_cols();
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void human_readable(off_t s, char *buffer, int l)
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if(s > 1024 * 1024 * 1024) snprintf(buffer, l, "%.2fGb", 1.0 * s / (1024 * 1024 * 1024));
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else if(s > 1024 * 1024) snprintf(buffer, l, "%.2fMb", 1.0 * s / (1024 * 1024));
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else if(s > 1024) snprintf(buffer, l, "%.2fkb", 1.0 * s / 1024);
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else snprintf(buffer, l, OFF_T_FORMAT"b", (OFF_T_FORMAT_CAST)s);
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void get_auth_data(const char *srv, const char *shr, char *wg, int wglen, char *un, int unlen, char *pw, int pwlen)
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static char hasasked = 0;
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char *wgtmp, *usertmp;
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if(!nonprompt && !username) {
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printf("Username for %s at %s [guest] ", shr, srv);
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fgets(tmp, sizeof(tmp), stdin);
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if(tmp[strlen(tmp)-1] == '\n')tmp[strlen(tmp)-1] = '\0';
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strncpy(un, tmp, unlen-1);
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} else if(username) strncpy(un, username, unlen-1);
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if(!nonprompt && !password) {
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asprintf(&prompt, "Password for %s at %s: ", shr, srv);
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pass = getpass(prompt);
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strncpy(pw, pass, pwlen-1);
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} else if(password) strncpy(pw, password, pwlen-1);
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if(workgroup)strncpy(wg, workgroup, wglen-1);
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wgtmp = SMB_STRNDUP(wg, wglen);
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usertmp = SMB_STRNDUP(un, unlen);
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if(!quiet)printf("Using workgroup %s, %s%s\n", wgtmp, *usertmp?"user ":"guest user", usertmp);
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free(wgtmp); free(usertmp);
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int smb_download_dir(const char *base, const char *name, int resume)
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char path[SMB_MAXPATHLEN];
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struct smbc_dirent *dirent;
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const char *relname = name;
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struct stat remotestat;
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snprintf(path, SMB_MAXPATHLEN-1, "%s%s%s", base, (base[0] && name[0] && name[0] != '/' && base[strlen(base)-1] != '/')?"/":"", name);
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/* List files in directory and call smb_download_file on them */
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dirhandle = smbc_opendir(path);
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if(errno == ENOTDIR) return smb_download_file(base, name, 1, resume, NULL);
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fprintf(stderr, "Can't open directory %s: %s\n", path, strerror(errno));
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while(*relname == '/')relname++;
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mkdir(relname, 0755);
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tmpname = SMB_STRDUP(name);
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while((dirent = smbc_readdir(dirhandle))) {
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if(!strcmp(dirent->name, ".") || !strcmp(dirent->name, ".."))continue;
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asprintf(&newname, "%s/%s", tmpname, dirent->name);
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switch(dirent->smbc_type) {
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smb_download_dir(base, newname, resume);
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smb_download_dir("smb://", dirent->name, resume);
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smb_download_dir("smb://", dirent->name, resume);
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smb_download_file(base, newname, 1, resume, NULL);
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case SMBC_FILE_SHARE:
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smb_download_dir(base, newname, resume);
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case SMBC_PRINTER_SHARE:
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if(!quiet)printf("Ignoring printer share %s\n", dirent->name);
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case SMBC_COMMS_SHARE:
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if(!quiet)printf("Ignoring comms share %s\n", dirent->name);
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if(!quiet)printf("Ignoring ipc$ share %s\n", dirent->name);
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fprintf(stderr, "Ignoring file '%s' of type '%d'\n", newname, dirent->smbc_type);
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if(keep_permissions) {
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if(smbc_fstat(dirhandle, &remotestat) < 0) {
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fprintf(stderr, "Unable to get stats on %s on remote server\n", path);
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smbc_closedir(dirhandle);
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if(chmod(relname, remotestat.st_mode) < 0) {
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fprintf(stderr, "Unable to change mode of local dir %s to %o\n", relname, remotestat.st_mode);
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smbc_closedir(dirhandle);
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smbc_closedir(dirhandle);
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char *print_time(long t)
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static char buffer[100];
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int secs, mins, hours;
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strncpy(buffer, "Unknown", sizeof(buffer));
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mins = (int)t / 60 % 60;
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hours = (int)t / (60 * 60);
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snprintf(buffer, sizeof(buffer)-1, "%02d:%02d:%02d", hours, mins, secs);
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void print_progress(const char *name, time_t start, time_t now, off_t start_pos, off_t pos, off_t total)
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char hpos[20], htotal[20], havg[20];
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char *status, *filename;
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if(now - start)avg = 1.0 * (pos - start_pos) / (now - start);
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eta = (total - pos) / avg;
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if(total)prcnt = 100.0 * pos / total;
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human_readable(pos, hpos, sizeof(hpos));
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human_readable(total, htotal, sizeof(htotal));
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human_readable(avg, havg, sizeof(havg));
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len = asprintf(&status, "%s of %s (%.2f%%) at %s/s ETA: %s", hpos, htotal, prcnt, havg, print_time(eta));
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int required = strlen(name), available = columns - len - strlen("[] ");
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if(required > available) asprintf(&filename, "...%s", name + required - available + 3);
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else filename = SMB_STRNDUP(name, available);
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} else filename = SMB_STRDUP(name);
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fprintf(stderr, "\r[%s] %s", filename, status);
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free(filename); free(status);
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int smb_download_file(const char *base, const char *name, int recursive, int resume, char *outfile) {
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int remotehandle, localhandle;
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time_t start_time = time(NULL);
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char path[SMB_MAXPATHLEN];
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char checkbuf[2][RESUME_CHECK_SIZE];
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char *readbuf = NULL;
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off_t offset_download = 0, offset_check = 0, curpos = 0, start_offset = 0;
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struct stat localstat, remotestat;
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snprintf(path, SMB_MAXPATHLEN-1, "%s%s%s", base, (*base && *name && name[0] != '/' && base[strlen(base)-1] != '/')?"/":"", name);
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remotehandle = smbc_open(path, O_RDONLY, 0755);
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if(remotehandle < 0) {
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fprintf(stderr, "%s is a directory. Specify -R to download recursively\n", path);
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smb_download_dir(base, name, resume);
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fprintf(stderr, "%s can't be found on the remote server\n", path);
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fprintf(stderr, "Not enough memory\n");
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fprintf(stderr, "The share name used in %s does not exist\n", path);
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fprintf(stderr, "You don't have enough permissions to access %s\n", path);
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if(smbc_fstat(remotehandle, &remotestat) < 0) {
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fprintf(stderr, "Can't stat %s: %s\n", path, strerror(errno));
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if(outfile) newpath = outfile;
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newpath = strrchr(base, '/');
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if(newpath)newpath++; else newpath = base;
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} else newpath = name;
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if(newpath[0] == '/')newpath++;
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/* Open local file and, if necessary, resume */
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localhandle = open(newpath, O_CREAT | O_NONBLOCK | O_RDWR | (!resume?O_EXCL:0), 0755);
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if(localhandle < 0) {
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fprintf(stderr, "Can't open %s: %s\n", newpath, strerror(errno));
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smbc_close(remotehandle);
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fstat(localhandle, &localstat);
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start_offset = localstat.st_size;
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if(localstat.st_size && localstat.st_size == remotestat.st_size) {
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if(verbose)fprintf(stderr, "%s is already downloaded completely.\n", path);
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else if(!quiet)fprintf(stderr, "%s\n", path);
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smbc_close(remotehandle);
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if(localstat.st_size > RESUME_CHECK_OFFSET && remotestat.st_size > RESUME_CHECK_OFFSET) {
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offset_download = localstat.st_size - RESUME_DOWNLOAD_OFFSET;
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offset_check = localstat.st_size - RESUME_CHECK_OFFSET;
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if(verbose)printf("Trying to start resume of %s at "OFF_T_FORMAT"\n"
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"At the moment "OFF_T_FORMAT" of "OFF_T_FORMAT" bytes have been retrieved\n",
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newpath, (OFF_T_FORMAT_CAST)offset_check,
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(OFF_T_FORMAT_CAST)localstat.st_size,
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(OFF_T_FORMAT_CAST)remotestat.st_size);
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/* First, check all bytes from offset_check to offset_download */
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off1 = lseek(localhandle, offset_check, SEEK_SET);
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fprintf(stderr, "Can't seek to "OFF_T_FORMAT" in local file %s\n",
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(OFF_T_FORMAT_CAST)offset_check, newpath);
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smbc_close(remotehandle); close(localhandle);
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off2 = smbc_lseek(remotehandle, offset_check, SEEK_SET);
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fprintf(stderr, "Can't seek to "OFF_T_FORMAT" in remote file %s\n",
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(OFF_T_FORMAT_CAST)offset_check, newpath);
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smbc_close(remotehandle); close(localhandle);
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fprintf(stderr, "Offset in local and remote files is different (local: "OFF_T_FORMAT", remote: "OFF_T_FORMAT")\n",
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(OFF_T_FORMAT_CAST)off1,
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(OFF_T_FORMAT_CAST)off2);
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if(smbc_read(remotehandle, checkbuf[0], RESUME_CHECK_SIZE) != RESUME_CHECK_SIZE) {
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fprintf(stderr, "Can't read %d bytes from remote file %s\n", RESUME_CHECK_SIZE, path);
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smbc_close(remotehandle); close(localhandle);
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if(read(localhandle, checkbuf[1], RESUME_CHECK_SIZE) != RESUME_CHECK_SIZE) {
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fprintf(stderr, "Can't read %d bytes from local file %s\n", RESUME_CHECK_SIZE, name);
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smbc_close(remotehandle); close(localhandle);
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if(memcmp(checkbuf[0], checkbuf[1], RESUME_CHECK_SIZE) == 0) {
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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);
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fprintf(stderr, "Local and remote file appear to be different, not doing resume for %s\n", path);
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smbc_close(remotehandle); close(localhandle);
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localhandle = STDOUT_FILENO;
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readbuf = SMB_MALLOC(blocksize);
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/* Now, download all bytes from offset_download to the end */
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for(curpos = offset_download; curpos < remotestat.st_size; curpos+=blocksize) {
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ssize_t bytesread = smbc_read(remotehandle, readbuf, blocksize);
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fprintf(stderr, "Can't read %u bytes at offset "OFF_T_FORMAT", file %s\n", (unsigned int)blocksize, (OFF_T_FORMAT_CAST)curpos, path);
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smbc_close(remotehandle);
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if (localhandle != STDOUT_FILENO) close(localhandle);
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total_bytes += bytesread;
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if(write(localhandle, readbuf, bytesread) < 0) {
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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);
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smbc_close(remotehandle);
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if (localhandle != STDOUT_FILENO) close(localhandle);
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if(dots)fputc('.', stderr);
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print_progress(newpath, start_time, time(NULL), start_offset, curpos, remotestat.st_size);
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printf("%s downloaded\n", path);
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fprintf(stderr, "\r%s", path);
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for(i = strlen(path); i < columns; i++) {
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if(keep_permissions && !send_stdout) {
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if(fchmod(localhandle, remotestat.st_mode) < 0) {
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fprintf(stderr, "Unable to change mode of local file %s to %o\n", path, remotestat.st_mode);
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smbc_close(remotehandle);
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smbc_close(remotehandle);
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if (localhandle != STDOUT_FILENO) close(localhandle);
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void clean_exit(void)
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human_readable(total_bytes, bs, sizeof(bs));
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if(!quiet)fprintf(stderr, "Downloaded %s in %lu seconds\n", bs, time(NULL) - total_start_time);
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void signal_quit(int v)
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int readrcfile(const char *name, const struct poptOption long_options[])
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FILE *fd = fopen(name, "r");
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char var[101], val[101];
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int *intdata; char **stringdata;
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fprintf(stderr, "Can't open RC file %s\n", name);
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if(fscanf(fd, "%100s %100s\n", var, val) < 2) {
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fprintf(stderr, "Can't parse line %d of %s, ignoring.\n", lineno, name);
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for(i = 0; long_options[i].shortName; i++) {
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if(!long_options[i].longName)continue;
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if(strcmp(long_options[i].longName, var)) continue;
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if(!long_options[i].arg)continue;
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switch(long_options[i].argInfo) {
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intdata = (int *)long_options[i].arg;
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if(!strcmp(val, "on")) *intdata = 1;
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else if(!strcmp(val, "off")) *intdata = 0;
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else fprintf(stderr, "Illegal value %s for %s at line %d in %s\n", val, var, lineno, name);
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intdata = (int *)long_options[i].arg;
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*intdata = atoi(val);
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case POPT_ARG_STRING:
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stringdata = (char **)long_options[i].arg;
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*stringdata = SMB_STRDUP(val);
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fprintf(stderr, "Invalid variable %s at line %d in %s\n", var, lineno, name);
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fprintf(stderr, "Invalid variable %s at line %d in %s\n", var, lineno, name);
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int main(int argc, const char **argv)
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const char *file = NULL;
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struct poptOption long_options[] = {
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{"guest", 'a', POPT_ARG_NONE, NULL, 'a', "Work as user guest" },
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{"resume", 'r', POPT_ARG_NONE, &_resume, 0, "Automatically resume aborted files" },
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{"recursive", 'R', POPT_ARG_NONE, &_recursive, 0, "Recursively download files" },
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{"username", 'u', POPT_ARG_STRING, &username, 'u', "Username to use" },
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{"password", 'p', POPT_ARG_STRING, &password, 'p', "Password to use" },
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{"workgroup", 'w', POPT_ARG_STRING, &workgroup, 'w', "Workgroup to use (optional)" },
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{"nonprompt", 'n', POPT_ARG_NONE, &nonprompt, 'n', "Don't ask anything (non-interactive)" },
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{"debuglevel", 'd', POPT_ARG_INT, &debuglevel, 'd', "Debuglevel to use" },
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{"outputfile", 'o', POPT_ARG_STRING, &outputfile, 'o', "Write downloaded data to specified file" },
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{"stdout", 'O', POPT_ARG_NONE, &send_stdout, 'O', "Write data to stdout" },
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{"dots", 'D', POPT_ARG_NONE, &dots, 'D', "Show dots as progress indication" },
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{"quiet", 'q', POPT_ARG_NONE, &quiet, 'q', "Be quiet" },
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{"verbose", 'v', POPT_ARG_NONE, &verbose, 'v', "Be verbose" },
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{"keep-permissions", 'P', POPT_ARG_NONE, &keep_permissions, 'P', "Keep permissions" },
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{"blocksize", 'b', POPT_ARG_INT, &blocksize, 'b', "Change number of bytes in a block"},
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{"rcfile", 'f', POPT_ARG_STRING, NULL, 0, "Use specified rc file"},
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/* only read rcfile if it exists */
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asprintf(&rcfile, "%s/.smbgetrc", getenv("HOME"));
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if(access(rcfile, F_OK) == 0)
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readrcfile(rcfile, long_options);
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signal(SIGWINCH, change_columns);
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signal(SIGINT, signal_quit);
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signal(SIGTERM, signal_quit);
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pc = poptGetContext(argv[0], argc, argv, long_options, 0);
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while((c = poptGetNextOpt(pc)) >= 0) {
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readrcfile(poptGetOptArg(pc), long_options);
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username = ""; password = "";
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if((send_stdout || outputfile) && _recursive) {
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fprintf(stderr, "The -o or -O and -R options can not be used together.\n");
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if(outputfile && send_stdout) {
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fprintf(stderr, "The -o and -O options cannot be used together.\n");
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if(smbc_init(get_auth_data, debuglevel) < 0) {
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fprintf(stderr, "Unable to initialize libsmbclient\n");
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columns = get_num_cols();
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total_start_time = time(NULL);
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while ( (file = poptGetArg(pc)) ) {
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return smb_download_file(file, "", _recursive, _resume, outputfile);
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return smb_download_dir(file, "", _resume);
added
removed
source/utils/smbget.c
