2 * Copyright (c) 2014 Lukasz Marek <lukasz.m.luki@gmail.com>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg 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 GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include <libsmbclient.h>
22 #include "libavutil/avstring.h"
23 #include "libavutil/opt.h"
39 static void libsmbc_get_auth_data(SMBCCTX *c, const char *server, const char *share,
40 char *workgroup, int workgroup_len,
41 char *username, int username_len,
42 char *password, int password_len)
44 /* Do nothing yet. Credentials are passed via url.
45 * Callback must exists, there might be a segmentation fault otherwise. */
48 static av_cold int libsmbc_connect(URLContext *h)
50 LIBSMBContext *libsmbc = h->priv_data;
52 libsmbc->ctx = smbc_new_context();
54 int ret = AVERROR(errno);
55 av_log(h, AV_LOG_ERROR, "Cannot create context: %s.\n", strerror(errno));
58 if (!smbc_init_context(libsmbc->ctx)) {
59 int ret = AVERROR(errno);
60 av_log(h, AV_LOG_ERROR, "Cannot initialize context: %s.\n", strerror(errno));
63 smbc_set_context(libsmbc->ctx);
65 smbc_setOptionUserData(libsmbc->ctx, h);
66 smbc_setFunctionAuthDataWithContext(libsmbc->ctx, libsmbc_get_auth_data);
68 if (libsmbc->timeout != -1)
69 smbc_setTimeout(libsmbc->ctx, libsmbc->timeout);
70 if (libsmbc->workgroup)
71 smbc_setWorkgroup(libsmbc->ctx, libsmbc->workgroup);
73 if (smbc_init(NULL, 0) < 0) {
74 int ret = AVERROR(errno);
75 av_log(h, AV_LOG_ERROR, "Initialization failed: %s\n", strerror(errno));
81 static av_cold int libsmbc_close(URLContext *h)
83 LIBSMBContext *libsmbc = h->priv_data;
84 if (libsmbc->fd >= 0) {
85 smbc_close(libsmbc->fd);
89 smbc_free_context(libsmbc->ctx, 1);
95 static av_cold int libsmbc_open(URLContext *h, const char *url, int flags)
97 LIBSMBContext *libsmbc = h->priv_data;
102 libsmbc->filesize = -1;
104 if ((ret = libsmbc_connect(h)) < 0)
107 if ((flags & AVIO_FLAG_WRITE) && (flags & AVIO_FLAG_READ)) {
108 access = O_CREAT | O_RDWR;
111 } else if (flags & AVIO_FLAG_WRITE) {
112 access = O_CREAT | O_WRONLY;
118 /* 0666 = -rw-rw-rw- = read+write for everyone, minus umask */
119 if ((libsmbc->fd = smbc_open(url, access, 0666)) < 0) {
120 ret = AVERROR(errno);
121 av_log(h, AV_LOG_ERROR, "File open failed: %s\n", strerror(errno));
125 if (smbc_fstat(libsmbc->fd, &st) < 0)
126 av_log(h, AV_LOG_WARNING, "Cannot stat file: %s\n", strerror(errno));
128 libsmbc->filesize = st.st_size;
136 static int64_t libsmbc_seek(URLContext *h, int64_t pos, int whence)
138 LIBSMBContext *libsmbc = h->priv_data;
141 if (whence == AVSEEK_SIZE) {
142 if (libsmbc->filesize == -1) {
143 av_log(h, AV_LOG_ERROR, "Error during seeking: filesize is unknown.\n");
146 return libsmbc->filesize;
149 if ((newpos = smbc_lseek(libsmbc->fd, pos, whence)) < 0) {
151 av_log(h, AV_LOG_ERROR, "Error during seeking: %s\n", strerror(err));
158 static int libsmbc_read(URLContext *h, unsigned char *buf, int size)
160 LIBSMBContext *libsmbc = h->priv_data;
163 if ((bytes_read = smbc_read(libsmbc->fd, buf, size)) < 0) {
164 int ret = AVERROR(errno);
165 av_log(h, AV_LOG_ERROR, "Read error: %s\n", strerror(errno));
169 return bytes_read ? bytes_read : AVERROR_EOF;
172 static int libsmbc_write(URLContext *h, const unsigned char *buf, int size)
174 LIBSMBContext *libsmbc = h->priv_data;
177 if ((bytes_written = smbc_write(libsmbc->fd, buf, size)) < 0) {
178 int ret = AVERROR(errno);
179 av_log(h, AV_LOG_ERROR, "Write error: %s\n", strerror(errno));
183 return bytes_written;
186 static int libsmbc_open_dir(URLContext *h)
188 LIBSMBContext *libsmbc = h->priv_data;
191 if ((ret = libsmbc_connect(h)) < 0)
194 if ((libsmbc->dh = smbc_opendir(h->filename)) < 0) {
195 ret = AVERROR(errno);
196 av_log(h, AV_LOG_ERROR, "Error opening dir: %s\n", strerror(errno));
207 static int libsmbc_read_dir(URLContext *h, AVIODirEntry **next)
209 LIBSMBContext *libsmbc = h->priv_data;
211 struct smbc_dirent *dirent = NULL;
215 *next = entry = ff_alloc_dir_entry();
217 return AVERROR(ENOMEM);
221 dirent = smbc_readdir(libsmbc->dh);
226 switch (dirent->smbc_type) {
228 entry->type = AVIO_ENTRY_DIRECTORY;
231 entry->type = AVIO_ENTRY_FILE;
233 case SMBC_FILE_SHARE:
234 entry->type = AVIO_ENTRY_SHARE;
237 entry->type = AVIO_ENTRY_SERVER;
240 entry->type = AVIO_ENTRY_WORKGROUP;
242 case SMBC_COMMS_SHARE:
244 case SMBC_PRINTER_SHARE:
249 entry->type = AVIO_ENTRY_UNKNOWN;
252 } while (skip_entry || !strcmp(dirent->name, ".") ||
253 !strcmp(dirent->name, ".."));
255 entry->name = av_strdup(dirent->name);
258 return AVERROR(ENOMEM);
261 url = av_append_path_component(h->filename, dirent->name);
264 if (!smbc_stat(url, &st)) {
265 entry->group_id = st.st_gid;
266 entry->user_id = st.st_uid;
267 entry->size = st.st_size;
268 entry->filemode = st.st_mode & 0777;
269 entry->modification_timestamp = INT64_C(1000000) * st.st_mtime;
270 entry->access_timestamp = INT64_C(1000000) * st.st_atime;
271 entry->status_change_timestamp = INT64_C(1000000) * st.st_ctime;
279 static int libsmbc_close_dir(URLContext *h)
281 LIBSMBContext *libsmbc = h->priv_data;
282 if (libsmbc->dh >= 0) {
283 smbc_closedir(libsmbc->dh);
290 static int libsmbc_delete(URLContext *h)
292 LIBSMBContext *libsmbc = h->priv_data;
296 if ((ret = libsmbc_connect(h)) < 0)
299 if ((libsmbc->fd = smbc_open(h->filename, O_WRONLY, 0666)) < 0) {
300 ret = AVERROR(errno);
304 if (smbc_fstat(libsmbc->fd, &st) < 0) {
305 ret = AVERROR(errno);
309 smbc_close(libsmbc->fd);
312 if (S_ISDIR(st.st_mode)) {
313 if (smbc_rmdir(h->filename) < 0) {
314 ret = AVERROR(errno);
318 if (smbc_unlink(h->filename) < 0) {
319 ret = AVERROR(errno);
331 static int libsmbc_move(URLContext *h_src, URLContext *h_dst)
333 LIBSMBContext *libsmbc = h_src->priv_data;
336 if ((ret = libsmbc_connect(h_src)) < 0)
339 if ((libsmbc->dh = smbc_rename(h_src->filename, h_dst->filename)) < 0) {
340 ret = AVERROR(errno);
347 libsmbc_close(h_src);
351 #define OFFSET(x) offsetof(LIBSMBContext, x)
352 #define D AV_OPT_FLAG_DECODING_PARAM
353 #define E AV_OPT_FLAG_ENCODING_PARAM
354 static const AVOption options[] = {
355 {"timeout", "set timeout in ms of socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, D|E },
356 {"truncate", "truncate existing files on write", OFFSET(trunc), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, E },
357 {"workgroup", "set the workgroup used for making connections", OFFSET(workgroup), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D|E },
361 static const AVClass libsmbclient_context_class = {
362 .class_name = "libsmbc",
363 .item_name = av_default_item_name,
365 .version = LIBAVUTIL_VERSION_INT,
368 const URLProtocol ff_libsmbclient_protocol = {
370 .url_open = libsmbc_open,
371 .url_read = libsmbc_read,
372 .url_write = libsmbc_write,
373 .url_seek = libsmbc_seek,
374 .url_close = libsmbc_close,
375 .url_delete = libsmbc_delete,
376 .url_move = libsmbc_move,
377 .url_open_dir = libsmbc_open_dir,
378 .url_read_dir = libsmbc_read_dir,
379 .url_close_dir = libsmbc_close_dir,
380 .priv_data_size = sizeof(LIBSMBContext),
381 .priv_data_class = &libsmbclient_context_class,
382 .flags = URL_PROTOCOL_FLAG_NETWORK,