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"
38 static void libsmbc_get_auth_data(SMBCCTX *c, const char *server, const char *share,
39 char *workgroup, int workgroup_len,
40 char *username, int username_len,
41 char *password, int password_len)
43 /* Do nothing yet. Credentials are passed via url.
44 * Callback must exists, there might be a segmentation fault otherwise. */
47 static av_cold int libsmbc_connect(URLContext *h)
49 LIBSMBContext *libsmbc = h->priv_data;
51 libsmbc->ctx = smbc_new_context();
53 int ret = AVERROR(errno);
54 av_log(h, AV_LOG_ERROR, "Cannot create context: %s.\n", strerror(errno));
57 if (!smbc_init_context(libsmbc->ctx)) {
58 int ret = AVERROR(errno);
59 av_log(h, AV_LOG_ERROR, "Cannot initialize context: %s.\n", strerror(errno));
62 smbc_set_context(libsmbc->ctx);
64 smbc_setOptionUserData(libsmbc->ctx, h);
65 smbc_setFunctionAuthDataWithContext(libsmbc->ctx, libsmbc_get_auth_data);
67 if (libsmbc->timeout != -1)
68 smbc_setTimeout(libsmbc->ctx, libsmbc->timeout);
69 if (libsmbc->workgroup)
70 smbc_setWorkgroup(libsmbc->ctx, libsmbc->workgroup);
72 if (smbc_init(NULL, 0) < 0) {
73 int ret = AVERROR(errno);
74 av_log(h, AV_LOG_ERROR, "Initialization failed: %s\n", strerror(errno));
80 static av_cold int libsmbc_close(URLContext *h)
82 LIBSMBContext *libsmbc = h->priv_data;
83 if (libsmbc->fd >= 0) {
84 smbc_close(libsmbc->fd);
88 smbc_free_context(libsmbc->ctx, 1);
94 static av_cold int libsmbc_open(URLContext *h, const char *url, int flags)
96 LIBSMBContext *libsmbc = h->priv_data;
101 libsmbc->filesize = -1;
103 if ((ret = libsmbc_connect(h)) < 0)
106 if ((flags & AVIO_FLAG_WRITE) && (flags & AVIO_FLAG_READ)) {
107 access = O_CREAT | O_RDWR;
110 } else if (flags & AVIO_FLAG_WRITE) {
111 access = O_CREAT | O_WRONLY;
117 /* 0666 = -rw-rw-rw- = read+write for everyone, minus umask */
118 if ((libsmbc->fd = smbc_open(url, access, 0666)) < 0) {
119 ret = AVERROR(errno);
120 av_log(h, AV_LOG_ERROR, "File open failed: %s\n", strerror(errno));
124 if (smbc_fstat(libsmbc->fd, &st) < 0)
125 av_log(h, AV_LOG_WARNING, "Cannot stat file: %s\n", strerror(errno));
127 libsmbc->filesize = st.st_size;
135 static int64_t libsmbc_seek(URLContext *h, int64_t pos, int whence)
137 LIBSMBContext *libsmbc = h->priv_data;
140 if (whence == AVSEEK_SIZE) {
141 if (libsmbc->filesize == -1) {
142 av_log(h, AV_LOG_ERROR, "Error during seeking: filesize is unknown.\n");
145 return libsmbc->filesize;
148 if ((newpos = smbc_lseek(libsmbc->fd, pos, whence)) < 0) {
150 av_log(h, AV_LOG_ERROR, "Error during seeking: %s\n", strerror(err));
157 static int libsmbc_read(URLContext *h, unsigned char *buf, int size)
159 LIBSMBContext *libsmbc = h->priv_data;
162 if ((bytes_read = smbc_read(libsmbc->fd, buf, size)) < 0) {
163 int ret = AVERROR(errno);
164 av_log(h, AV_LOG_ERROR, "Read error: %s\n", strerror(errno));
171 static int libsmbc_write(URLContext *h, const unsigned char *buf, int size)
173 LIBSMBContext *libsmbc = h->priv_data;
176 if ((bytes_written = smbc_write(libsmbc->fd, buf, size)) < 0) {
177 int ret = AVERROR(errno);
178 av_log(h, AV_LOG_ERROR, "Write error: %s\n", strerror(errno));
182 return bytes_written;
185 #define OFFSET(x) offsetof(LIBSMBContext, x)
186 #define D AV_OPT_FLAG_DECODING_PARAM
187 #define E AV_OPT_FLAG_ENCODING_PARAM
188 static const AVOption options[] = {
189 {"timeout", "set timeout in ms of socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, D|E },
190 {"truncate", "truncate existing files on write", OFFSET(trunc), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, E },
191 {"workgroup", "set the workgroup used for making connections", OFFSET(workgroup), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D|E },
195 static const AVClass libsmbclient_context_class = {
196 .class_name = "libsmbc",
197 .item_name = av_default_item_name,
199 .version = LIBAVUTIL_VERSION_INT,
202 URLProtocol ff_libsmbclient_protocol = {
204 .url_open = libsmbc_open,
205 .url_read = libsmbc_read,
206 .url_write = libsmbc_write,
207 .url_seek = libsmbc_seek,
208 .url_close = libsmbc_close,
209 .priv_data_size = sizeof(LIBSMBContext),
210 .priv_data_class = &libsmbclient_context_class,
211 .flags = URL_PROTOCOL_FLAG_NETWORK,