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lavf/libssh: add private_key option

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Allows to specify private key to use during authorization.

Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com>
This commit is contained in:
Lukasz Marek 2014-01-20 22:57:57 +01:00
parent 977abf9aed
commit 7e8f304846
3 changed files with 56 additions and 11 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.

61
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"
@ -34,8 +35,55 @@ typedef struct {
int64_t filesize;
int rw_timeout;
int trunc;
char *priv_key;
} LIBSSHContext;
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 int libssh_close(URLContext *h)
{
LIBSSHContext *s = h->priv_data;
@ -82,8 +130,6 @@ static int libssh_open(URLContext *h, const char *url, int flags)
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));
@ -91,14 +137,8 @@ static int libssh_open(URLContext *h, const char *url, int flags)
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);
goto fail;
}
}
if ((ret = libssh_authentication(s, user, pass)) < 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));
@ -210,6 +250,7 @@ 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, \