mirror of https://github.com/FFmpeg/FFmpeg.git
Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>pull/36/head
Lukasz Marek
12 years ago
committed by
Michael Niedermayer
parent
705b30e24f
commit
5b153f8164
6 changed files with 268 additions and 0 deletions
@ -0,0 +1,229 @@ |
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/*
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* Copyright (c) 2013 Lukasz Marek <lukasz.m.luki@gmail.com> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg 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 GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <fcntl.h> |
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#include <libssh/sftp.h> |
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#include "libavutil/avstring.h" |
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#include "libavutil/opt.h" |
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#include "avformat.h" |
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#include "internal.h" |
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#include "url.h" |
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typedef struct { |
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const AVClass *class; |
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ssh_session session; |
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sftp_session sftp; |
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sftp_file file; |
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int64_t filesize; |
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int rw_timeout; |
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int trunc; |
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} LIBSSHContext; |
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static int libssh_close(URLContext *h) |
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{ |
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LIBSSHContext *s = h->priv_data; |
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if (s->file) |
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sftp_close(s->file); |
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if (s->sftp) |
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sftp_free(s->sftp); |
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if (s->session) { |
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ssh_disconnect(s->session); |
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ssh_free(s->session); |
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} |
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return 0; |
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} |
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static int libssh_open(URLContext *h, const char *url, int flags) |
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{ |
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static const int verbosity = SSH_LOG_NOLOG; |
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LIBSSHContext *s = h->priv_data; |
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char proto[10], path[MAX_URL_SIZE], hostname[1024], credencials[1024]; |
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int port = 22, access, ret; |
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long timeout = s->rw_timeout * 1000; |
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const char *user = NULL, *pass = NULL; |
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char *end = NULL; |
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sftp_attributes stat; |
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av_url_split(proto, sizeof(proto), |
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credencials, sizeof(credencials), |
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hostname, sizeof(hostname), |
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&port, |
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path, sizeof(path), |
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url); |
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if (port <= 0 || port > 65535) |
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port = 22; |
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if (!(s->session = ssh_new())) { |
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ret = AVERROR(ENOMEM); |
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goto fail; |
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} |
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user = av_strtok(credencials, ":", &end); |
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pass = av_strtok(end, ":", &end); |
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ssh_options_set(s->session, SSH_OPTIONS_HOST, hostname); |
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ssh_options_set(s->session, SSH_OPTIONS_PORT, &port); |
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ssh_options_set(s->session, SSH_OPTIONS_LOG_VERBOSITY, &verbosity); |
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if (timeout > 0) |
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ssh_options_set(s->session, SSH_OPTIONS_TIMEOUT_USEC, &timeout); |
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if (user) |
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ssh_options_set(s->session, SSH_OPTIONS_USER, user); |
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if (ssh_connect(s->session) != SSH_OK) { |
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av_log(h, AV_LOG_ERROR, "Connection failed. %s\n", ssh_get_error(s->session)); |
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ret = AVERROR(EIO); |
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goto fail; |
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} |
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if (pass && ssh_userauth_password(s->session, NULL, pass) != SSH_AUTH_SUCCESS) { |
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av_log(h, AV_LOG_ERROR, "Error authenticating with password: %s\n", ssh_get_error(s->session)); |
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ret = AVERROR(EACCES); |
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goto fail; |
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} |
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if (!(s->sftp = sftp_new(s->session))) { |
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av_log(h, AV_LOG_ERROR, "SFTP session creation failed: %s\n", ssh_get_error(s->session)); |
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ret = AVERROR(ENOMEM); |
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goto fail; |
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} |
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if (sftp_init(s->sftp) != SSH_OK) { |
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av_log(h, AV_LOG_ERROR, "Error initializing sftp session: %s\n", ssh_get_error(s->session)); |
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ret = AVERROR(EIO); |
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goto fail; |
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} |
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if ((flags & AVIO_FLAG_WRITE) && (flags & AVIO_FLAG_READ)) { |
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access = O_CREAT | O_RDWR; |
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if (s->trunc) |
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access |= O_TRUNC; |
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} else if (flags & AVIO_FLAG_WRITE) { |
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access = O_CREAT | O_WRONLY; |
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if (s->trunc) |
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access |= O_TRUNC; |
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} else { |
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access = O_RDONLY; |
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} |
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if (!(s->file = sftp_open(s->sftp, path, access, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH))) { |
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av_log(h, AV_LOG_ERROR, "Error opening sftp file: %s\n", ssh_get_error(s->session)); |
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ret = AVERROR(EIO); |
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goto fail; |
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} |
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if (!(stat = sftp_fstat(s->file))) { |
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av_log(h, AV_LOG_WARNING, "Cannot stat remote file %s.\n", path); |
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s->filesize = -1; |
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} else { |
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s->filesize = stat->size; |
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sftp_attributes_free(stat); |
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} |
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return 0; |
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fail: |
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libssh_close(h); |
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return ret; |
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} |
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static int64_t libssh_seek(URLContext *h, int64_t pos, int whence) |
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{ |
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LIBSSHContext *s = h->priv_data; |
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int64_t newpos; |
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if (s->filesize == -1 && (whence == AVSEEK_SIZE || whence == SEEK_END)) { |
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av_log(h, AV_LOG_ERROR, "Error during seeking.\n"); |
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return AVERROR(EIO); |
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} |
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switch(whence) { |
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case AVSEEK_SIZE: |
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return s->filesize; |
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case SEEK_SET: |
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newpos = pos; |
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break; |
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case SEEK_CUR: |
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newpos = sftp_tell64(s->file); |
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break; |
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case SEEK_END: |
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newpos = s->filesize + pos; |
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break; |
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default: |
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return AVERROR(EINVAL); |
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} |
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if (sftp_seek64(s->file, newpos)) { |
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av_log(h, AV_LOG_ERROR, "Error during seeking.\n"); |
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return AVERROR(EIO); |
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} |
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return newpos; |
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} |
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static int libssh_read(URLContext *h, unsigned char *buf, int size) |
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{ |
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LIBSSHContext *s = h->priv_data; |
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int bytes_read; |
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if ((bytes_read = sftp_read(s->file, buf, size)) < 0) { |
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av_log(h, AV_LOG_ERROR, "Read error.\n"); |
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return AVERROR(EIO); |
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} |
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return bytes_read; |
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} |
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static int libssh_write(URLContext *h, const unsigned char *buf, int size) |
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{ |
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LIBSSHContext *s = h->priv_data; |
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int bytes_written; |
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if ((bytes_written = sftp_write(s->file, buf, size)) < 0) { |
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av_log(h, AV_LOG_ERROR, "Write error.\n"); |
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return AVERROR(EIO); |
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} |
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return bytes_written; |
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} |
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#define OFFSET(x) offsetof(LIBSSHContext, x) |
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#define D AV_OPT_FLAG_DECODING_PARAM |
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#define E AV_OPT_FLAG_ENCODING_PARAM |
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static const AVOption options[] = { |
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{"timeout", "set timeout of socket I/O operations", OFFSET(rw_timeout), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, D|E }, |
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{"truncate", "Truncate existing files on write", OFFSET(trunc), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, E }, |
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{NULL} |
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}; |
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static const AVClass libssh_context_class = { |
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.class_name = "libssh", |
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.item_name = av_default_item_name, |
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.option = options, |
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.version = LIBAVUTIL_VERSION_INT, |
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}; |
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URLProtocol ff_libssh_protocol = { |
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.name = "sftp", |
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.url_open = libssh_open, |
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.url_read = libssh_read, |
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.url_write = libssh_write, |
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.url_seek = libssh_seek, |
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.url_close = libssh_close, |
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.priv_data_size = sizeof(LIBSSHContext), |
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.priv_data_class = &libssh_context_class, |
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.flags = URL_PROTOCOL_FLAG_NETWORK, |
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}; |
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