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Code Issues Releases Activity

Merge remote-tracking branch 'lukaszmluki/master'

Browse Source 
* lukaszmluki/master:
  lavf/ftp: remove double space
  lavf/libssh: fix seek with whence==SEEK_CUR
  lavf/libssh: rename context variable from s into libssh
  lavf/libssh: add av_cold attributes
  lavf/libssh: factorize create_sftp_session function
  lavf/libssh: factorize create_ssh_session function
  lavf/libssh: factorize file_stat function
  lavf/libssh: factorize open_file function
  lavf/libssh: add private_key option

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-01-22 01:12:18 +01:00
commit 94a52417cb
4 changed files with 161 additions and 86 deletions
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4
doc/protocols.texi
View File

@ -552,6 +552,10 @@ is not specified.
Truncate existing files on write, if set to 1. A value of 0 prevents
truncating. Default value is 1.
@item private_key
Specify the path of the file containing private key to use during authorization.
By default libssh searches for keys in the @file{~/.ssh/} directory.
@end table
Example: Play a file stored on remote server.

239
libavformat/libssh.c
View File

@ -22,6 +22,7 @@
#include <libssh/sftp.h>
#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "libavutil/attributes.h"
#include "avformat.h"
#include "internal.h"
#include "url.h"
@ -34,32 +35,152 @@ typedef struct {
int64_t filesize;
int rw_timeout;
int trunc;
char *priv_key;
} LIBSSHContext;
static int libssh_close(URLContext *h)
static av_cold int libssh_create_ssh_session(LIBSSHContext *libssh, const char* hostname, unsigned int port)
{
LIBSSHContext *s = h->priv_data;
if (s->file)
sftp_close(s->file);
if (s->sftp)
sftp_free(s->sftp);
if (s->session) {
ssh_disconnect(s->session);
ssh_free(s->session);
static const int verbosity = SSH_LOG_NOLOG;
if (!(libssh->session = ssh_new())) {
av_log(libssh, AV_LOG_ERROR, "SSH session creation failed: %s\n", ssh_get_error(libssh->session));
return AVERROR(ENOMEM);
}
ssh_options_set(libssh->session, SSH_OPTIONS_HOST, hostname);
ssh_options_set(libssh->session, SSH_OPTIONS_PORT, &port);
ssh_options_set(libssh->session, SSH_OPTIONS_LOG_VERBOSITY, &verbosity);
if (libssh->rw_timeout > 0) {
long timeout = libssh->rw_timeout * 1000;
ssh_options_set(libssh->session, SSH_OPTIONS_TIMEOUT_USEC, &timeout);
}
if (ssh_connect(libssh->session) != SSH_OK) {
av_log(libssh, AV_LOG_ERROR, "Connection failed: %s\n", ssh_get_error(libssh->session));
return AVERROR(EIO);
}
return 0;
}
static av_cold int libssh_authentication(LIBSSHContext *libssh, const char *user, const char *password)
{
int authorized = 0;
int auth_methods;
if (user)
ssh_options_set(libssh->session, SSH_OPTIONS_USER, user);
auth_methods = ssh_userauth_list(libssh->session, NULL);
if (auth_methods & SSH_AUTH_METHOD_PUBLICKEY) {
if (libssh->priv_key) {
ssh_string pub_key;
ssh_private_key priv_key;
int type;
if (!ssh_try_publickey_from_file(libssh->session, libssh->priv_key, &pub_key, &type)) {
priv_key = privatekey_from_file(libssh->session, libssh->priv_key, type, password);
if (ssh_userauth_pubkey(libssh->session, NULL, pub_key, priv_key) == SSH_AUTH_SUCCESS) {
av_log(libssh, AV_LOG_DEBUG, "Authentication successful with selected private key.\n");
authorized = 1;
}
} else {
av_log(libssh, AV_LOG_DEBUG, "Invalid key is provided.\n");
return AVERROR(EACCES);
}
} else if (ssh_userauth_autopubkey(libssh->session, password) == SSH_AUTH_SUCCESS) {
av_log(libssh, AV_LOG_DEBUG, "Authentication successful with auto selected key.\n");
authorized = 1;
}
}
if (!authorized && (auth_methods & SSH_AUTH_METHOD_PASSWORD)) {
if (ssh_userauth_password(libssh->session, NULL, password) == SSH_AUTH_SUCCESS) {
av_log(libssh, AV_LOG_DEBUG, "Authentication successful with password.\n");
authorized = 1;
}
}
if (!authorized) {
av_log(libssh, AV_LOG_ERROR, "Authentication failed.\n");
return AVERROR(EACCES);
}
return 0;
}
static av_cold int libssh_create_sftp_session(LIBSSHContext *libssh)
{
if (!(libssh->sftp = sftp_new(libssh->session))) {
av_log(libssh, AV_LOG_ERROR, "SFTP session creation failed: %s\n", ssh_get_error(libssh->session));
return AVERROR(ENOMEM);
}
if (sftp_init(libssh->sftp) != SSH_OK) {
av_log(libssh, AV_LOG_ERROR, "Error initializing sftp session: %s\n", ssh_get_error(libssh->session));
return AVERROR(EIO);
}
return 0;
}
static av_cold int libssh_open_file(LIBSSHContext *libssh, int flags, const char *file)
{
int access;
if ((flags & AVIO_FLAG_WRITE) && (flags & AVIO_FLAG_READ)) {
access = O_CREAT | O_RDWR;
if (libssh->trunc)
access |= O_TRUNC;
} else if (flags & AVIO_FLAG_WRITE) {
access = O_CREAT | O_WRONLY;
if (libssh->trunc)
access |= O_TRUNC;
} else
access = O_RDONLY;
/* 0666 = -rw-rw-rw- = read+write for everyone, minus umask */
if (!(libssh->file = sftp_open(libssh->sftp, file, access, 0666))) {
av_log(libssh, AV_LOG_ERROR, "Error opening sftp file: %s\n", ssh_get_error(libssh->session));
return AVERROR(EIO);
}
return 0;
}
static av_cold void libssh_stat_file(LIBSSHContext *libssh)
{
sftp_attributes stat;
if (!(stat = sftp_fstat(libssh->file))) {
av_log(libssh, AV_LOG_WARNING, "Cannot stat remote file.\n");
libssh->filesize = -1;
} else {
libssh->filesize = stat->size;
sftp_attributes_free(stat);
}
}
static av_cold int libssh_close(URLContext *h)
{
LIBSSHContext *libssh = h->priv_data;
if (libssh->file)
sftp_close(libssh->file);
if (libssh->sftp)
sftp_free(libssh->sftp);
if (libssh->session) {
ssh_disconnect(libssh->session);
ssh_free(libssh->session);
}
return 0;
}
static int libssh_open(URLContext *h, const char *url, int flags)
static av_cold int libssh_open(URLContext *h, const char *url, int flags)
{
static const int verbosity = SSH_LOG_NOLOG;
LIBSSHContext *s = h->priv_data;
LIBSSHContext *libssh = h->priv_data;
char proto[10], path[MAX_URL_SIZE], hostname[1024], credencials[1024];
int port = 22, access, ret;
long timeout = s->rw_timeout * 1000;
int port = 22, ret;
const char *user = NULL, *pass = NULL;
char *end = NULL;
sftp_attributes stat;
av_url_split(proto, sizeof(proto),
credencials, sizeof(credencials),
@ -71,73 +192,22 @@ static int libssh_open(URLContext *h, const char *url, int flags)
if (port <= 0 || port > 65535)
port = 22;
if (!(s->session = ssh_new())) {
ret = AVERROR(ENOMEM);
if ((ret = libssh_create_ssh_session(libssh, hostname, port)) < 0)
goto fail;
}
user = av_strtok(credencials, ":", &end);
pass = av_strtok(end, ":", &end);
ssh_options_set(s->session, SSH_OPTIONS_HOST, hostname);
ssh_options_set(s->session, SSH_OPTIONS_PORT, &port);
ssh_options_set(s->session, SSH_OPTIONS_LOG_VERBOSITY, &verbosity);
if (timeout > 0)
ssh_options_set(s->session, SSH_OPTIONS_TIMEOUT_USEC, &timeout);
if (user)
ssh_options_set(s->session, SSH_OPTIONS_USER, user);
if (ssh_connect(s->session) != SSH_OK) {
av_log(h, AV_LOG_ERROR, "Connection failed. %s\n", ssh_get_error(s->session));
ret = AVERROR(EIO);
if ((ret = libssh_authentication(libssh, user, pass)) < 0)
goto fail;
}
if (ssh_userauth_autopubkey(s->session, pass) != SSH_AUTH_SUCCESS) {
av_log(s, AV_LOG_DEBUG, "Authentication using public key failed, trying password method.\n");
if (ssh_userauth_password(s->session, NULL, pass) != SSH_AUTH_SUCCESS) {
av_log(h, AV_LOG_ERROR, "Authentication failed.\n");
ret = AVERROR(EACCES);
if ((ret = libssh_create_sftp_session(libssh)) < 0)
goto fail;
}
}
if (!(s->sftp = sftp_new(s->session))) {
av_log(h, AV_LOG_ERROR, "SFTP session creation failed: %s\n", ssh_get_error(s->session));
ret = AVERROR(ENOMEM);
if ((ret = libssh_open_file(libssh, flags, path)) < 0)
goto fail;
}
if (sftp_init(s->sftp) != SSH_OK) {
av_log(h, AV_LOG_ERROR, "Error initializing sftp session: %s\n", ssh_get_error(s->session));
ret = AVERROR(EIO);
goto fail;
}
if ((flags & AVIO_FLAG_WRITE) && (flags & AVIO_FLAG_READ)) {
access = O_CREAT | O_RDWR;
if (s->trunc)
access |= O_TRUNC;
} else if (flags & AVIO_FLAG_WRITE) {
access = O_CREAT | O_WRONLY;
if (s->trunc)
access |= O_TRUNC;
} else {
access = O_RDONLY;
}
/* 0666 = -rw-rw-rw- = read+write for everyone, minus umask */
if (!(s->file = sftp_open(s->sftp, path, access, 0666))) {
av_log(h, AV_LOG_ERROR, "Error opening sftp file: %s\n", ssh_get_error(s->session));
ret = AVERROR(EIO);
goto fail;
}
if (!(stat = sftp_fstat(s->file))) {
av_log(h, AV_LOG_WARNING, "Cannot stat remote file %s.\n", path);
s->filesize = -1;
} else {
s->filesize = stat->size;
sftp_attributes_free(stat);
}
libssh_stat_file(libssh);
return 0;
@ -148,31 +218,31 @@ static int libssh_open(URLContext *h, const char *url, int flags)
static int64_t libssh_seek(URLContext *h, int64_t pos, int whence)
{
LIBSSHContext *s = h->priv_data;
LIBSSHContext *libssh = h->priv_data;
int64_t newpos;
if (s->filesize == -1 && (whence == AVSEEK_SIZE || whence == SEEK_END)) {
if (libssh->filesize == -1 && (whence == AVSEEK_SIZE || whence == SEEK_END)) {
av_log(h, AV_LOG_ERROR, "Error during seeking.\n");
return AVERROR(EIO);
}
switch(whence) {
case AVSEEK_SIZE:
return s->filesize;
return libssh->filesize;
case SEEK_SET:
newpos = pos;
break;
case SEEK_CUR:
newpos = sftp_tell64(s->file);
newpos = sftp_tell64(libssh->file) + pos;
break;
case SEEK_END:
newpos = s->filesize + pos;
newpos = libssh->filesize + pos;
break;
default:
return AVERROR(EINVAL);
}
if (sftp_seek64(s->file, newpos)) {
if (sftp_seek64(libssh->file, newpos)) {
av_log(h, AV_LOG_ERROR, "Error during seeking.\n");
return AVERROR(EIO);
}
@ -182,11 +252,11 @@ static int64_t libssh_seek(URLContext *h, int64_t pos, int whence)
static int libssh_read(URLContext *h, unsigned char *buf, int size)
{
LIBSSHContext *s = h->priv_data;
LIBSSHContext *libssh = h->priv_data;
int bytes_read;
if ((bytes_read = sftp_read(s->file, buf, size)) < 0) {
av_log(h, AV_LOG_ERROR, "Read error.\n");
if ((bytes_read = sftp_read(libssh->file, buf, size)) < 0) {
av_log(libssh, AV_LOG_ERROR, "Read error.\n");
return AVERROR(EIO);
}
return bytes_read;
@ -194,11 +264,11 @@ static int libssh_read(URLContext *h, unsigned char *buf, int size)
static int libssh_write(URLContext *h, const unsigned char *buf, int size)
{
LIBSSHContext *s = h->priv_data;
LIBSSHContext *libssh = h->priv_data;
int bytes_written;
if ((bytes_written = sftp_write(s->file, buf, size)) < 0) {
av_log(h, AV_LOG_ERROR, "Write error.\n");
if ((bytes_written = sftp_write(libssh->file, buf, size)) < 0) {
av_log(libssh, AV_LOG_ERROR, "Write error.\n");
return AVERROR(EIO);
}
return bytes_written;
@ -210,6 +280,7 @@ static int libssh_write(URLContext *h, const unsigned char *buf, int size)
static const AVOption options[] = {
{"timeout", "set timeout of socket I/O operations", OFFSET(rw_timeout), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, D|E },
{"truncate", "Truncate existing files on write", OFFSET(trunc), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, E },
{"private_key", "set path to private key", OFFSET(priv_key), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D|E },
{NULL}
};

2
libavformat/version.h
View File

@ -31,7 +31,7 @@
#define LIBAVFORMAT_VERSION_MAJOR 55
#define LIBAVFORMAT_VERSION_MINOR 25
#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_MICRO 101
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
LIBAVFORMAT_VERSION_MINOR, \