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
,