2017-10-23 14:49:23 +03:00
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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2019-02-28 17:35:58 +03:00
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* Copyright (C) 2017 - 2019 Red Hat, Inc.
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2017-10-23 14:49:23 +03:00
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*
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2017-10-31 20:30:36 +03:00
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* Authors: Nikos Mavrogiannopoulos, Tomas Mraz, Stanislav Zidek,
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* Robert Kolcun, Andreas Schneider
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2017-10-23 14:49:23 +03:00
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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#include "curl_setup.h"
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#ifdef USE_LIBSSH
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#include <limits.h>
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#include <libssh/libssh.h>
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2017-10-31 20:30:36 +03:00
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#include <libssh/sftp.h>
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2017-10-23 14:49:23 +03:00
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#ifdef HAVE_UTSNAME_H
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#include <sys/utsname.h>
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#endif
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#ifdef HAVE_NETDB_H
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#include <netdb.h>
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#endif
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#ifdef __VMS
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#include <in.h>
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#include <inet.h>
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#endif
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#if (defined(NETWARE) && defined(__NOVELL_LIBC__))
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#undef in_addr_t
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#define in_addr_t unsigned long
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#endif
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#include <curl/curl.h>
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#include "urldata.h"
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#include "sendf.h"
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#include "hostip.h"
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#include "progress.h"
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#include "transfer.h"
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#include "escape.h"
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#include "http.h" /* for HTTP proxy tunnel stuff */
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#include "ssh.h"
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#include "url.h"
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#include "speedcheck.h"
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#include "getinfo.h"
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#include "strdup.h"
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#include "strcase.h"
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#include "vtls/vtls.h"
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#include "connect.h"
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#include "strerror.h"
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#include "inet_ntop.h"
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#include "parsedate.h" /* for the week day and month names */
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#include "sockaddr.h" /* required for Curl_sockaddr_storage */
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#include "strtoofft.h"
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#include "multiif.h"
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#include "select.h"
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#include "warnless.h"
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2017-10-31 20:30:36 +03:00
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/* for permission and open flags */
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <fcntl.h>
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2017-10-23 14:49:23 +03:00
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/* The last 3 #include files should be in this order */
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#include "curl_printf.h"
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#include "curl_memory.h"
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#include "memdebug.h"
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#include "curl_path.h"
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2018-12-21 16:22:42 +03:00
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/* A recent macro provided by libssh. Or make our own. */
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#ifndef SSH_STRING_FREE_CHAR
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/* !checksrc! disable ASSIGNWITHINCONDITION 1 */
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#define SSH_STRING_FREE_CHAR(x) \
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do { if((x) != NULL) { ssh_string_free_char(x); x = NULL; } } while(0)
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#endif
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2017-10-23 14:49:23 +03:00
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/* Local functions: */
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static CURLcode myssh_connect(struct connectdata *conn, bool *done);
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static CURLcode myssh_multi_statemach(struct connectdata *conn,
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bool *done);
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static CURLcode myssh_do_it(struct connectdata *conn, bool *done);
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static CURLcode scp_done(struct connectdata *conn,
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CURLcode, bool premature);
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static CURLcode scp_doing(struct connectdata *conn, bool *dophase_done);
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static CURLcode scp_disconnect(struct connectdata *conn,
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bool dead_connection);
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2017-10-31 20:30:36 +03:00
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static CURLcode sftp_done(struct connectdata *conn,
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CURLcode, bool premature);
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static CURLcode sftp_doing(struct connectdata *conn,
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bool *dophase_done);
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static CURLcode sftp_disconnect(struct connectdata *conn, bool dead);
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static
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CURLcode sftp_perform(struct connectdata *conn,
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bool *connected,
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bool *dophase_done);
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static void sftp_quote(struct connectdata *conn);
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static void sftp_quote_stat(struct connectdata *conn);
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2017-10-23 14:49:23 +03:00
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static int myssh_getsock(struct connectdata *conn, curl_socket_t *sock,
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int numsocks);
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static int myssh_perform_getsock(const struct connectdata *conn,
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curl_socket_t *sock,
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int numsocks);
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static CURLcode myssh_setup_connection(struct connectdata *conn);
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/*
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* SCP protocol handler.
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*/
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const struct Curl_handler Curl_handler_scp = {
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"SCP", /* scheme */
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myssh_setup_connection, /* setup_connection */
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myssh_do_it, /* do_it */
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scp_done, /* done */
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ZERO_NULL, /* do_more */
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myssh_connect, /* connect_it */
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myssh_multi_statemach, /* connecting */
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scp_doing, /* doing */
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myssh_getsock, /* proto_getsock */
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myssh_getsock, /* doing_getsock */
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ZERO_NULL, /* domore_getsock */
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myssh_perform_getsock, /* perform_getsock */
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scp_disconnect, /* disconnect */
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ZERO_NULL, /* readwrite */
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ZERO_NULL, /* connection_check */
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PORT_SSH, /* defport */
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CURLPROTO_SCP, /* protocol */
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PROTOPT_DIRLOCK | PROTOPT_CLOSEACTION | PROTOPT_NOURLQUERY /* flags */
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};
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2017-10-31 20:30:36 +03:00
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/*
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* SFTP protocol handler.
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*/
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const struct Curl_handler Curl_handler_sftp = {
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"SFTP", /* scheme */
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myssh_setup_connection, /* setup_connection */
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myssh_do_it, /* do_it */
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sftp_done, /* done */
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ZERO_NULL, /* do_more */
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myssh_connect, /* connect_it */
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myssh_multi_statemach, /* connecting */
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sftp_doing, /* doing */
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myssh_getsock, /* proto_getsock */
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myssh_getsock, /* doing_getsock */
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ZERO_NULL, /* domore_getsock */
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myssh_perform_getsock, /* perform_getsock */
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sftp_disconnect, /* disconnect */
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ZERO_NULL, /* readwrite */
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ZERO_NULL, /* connection_check */
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PORT_SSH, /* defport */
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CURLPROTO_SFTP, /* protocol */
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PROTOPT_DIRLOCK | PROTOPT_CLOSEACTION
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| PROTOPT_NOURLQUERY /* flags */
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};
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static CURLcode sftp_error_to_CURLE(int err)
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{
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switch(err) {
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case SSH_FX_OK:
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return CURLE_OK;
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case SSH_FX_NO_SUCH_FILE:
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case SSH_FX_NO_SUCH_PATH:
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return CURLE_REMOTE_FILE_NOT_FOUND;
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case SSH_FX_PERMISSION_DENIED:
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case SSH_FX_WRITE_PROTECT:
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return CURLE_REMOTE_ACCESS_DENIED;
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case SSH_FX_FILE_ALREADY_EXISTS:
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return CURLE_REMOTE_FILE_EXISTS;
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default:
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break;
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}
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return CURLE_SSH;
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}
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2018-07-05 23:43:29 +03:00
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#ifndef DEBUGBUILD
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#define state(x,y) mystate(x,y)
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#else
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#define state(x,y) mystate(x,y, __LINE__)
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#endif
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2017-10-23 14:49:23 +03:00
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/*
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* SSH State machine related code
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*/
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/* This is the ONLY way to change SSH state! */
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2018-07-05 23:43:29 +03:00
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static void mystate(struct connectdata *conn, sshstate nowstate
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#ifdef DEBUGBUILD
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, int lineno
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#endif
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)
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2017-10-23 14:49:23 +03:00
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{
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struct ssh_conn *sshc = &conn->proto.sshc;
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#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
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/* for debug purposes */
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static const char *const names[] = {
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"SSH_STOP",
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"SSH_INIT",
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"SSH_S_STARTUP",
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"SSH_HOSTKEY",
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"SSH_AUTHLIST",
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"SSH_AUTH_PKEY_INIT",
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"SSH_AUTH_PKEY",
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"SSH_AUTH_PASS_INIT",
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"SSH_AUTH_PASS",
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"SSH_AUTH_AGENT_INIT",
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"SSH_AUTH_AGENT_LIST",
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"SSH_AUTH_AGENT",
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"SSH_AUTH_HOST_INIT",
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"SSH_AUTH_HOST",
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"SSH_AUTH_KEY_INIT",
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"SSH_AUTH_KEY",
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"SSH_AUTH_GSSAPI",
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"SSH_AUTH_DONE",
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"SSH_SFTP_INIT",
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"SSH_SFTP_REALPATH",
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"SSH_SFTP_QUOTE_INIT",
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"SSH_SFTP_POSTQUOTE_INIT",
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"SSH_SFTP_QUOTE",
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"SSH_SFTP_NEXT_QUOTE",
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"SSH_SFTP_QUOTE_STAT",
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"SSH_SFTP_QUOTE_SETSTAT",
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"SSH_SFTP_QUOTE_SYMLINK",
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"SSH_SFTP_QUOTE_MKDIR",
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"SSH_SFTP_QUOTE_RENAME",
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"SSH_SFTP_QUOTE_RMDIR",
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"SSH_SFTP_QUOTE_UNLINK",
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"SSH_SFTP_QUOTE_STATVFS",
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"SSH_SFTP_GETINFO",
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"SSH_SFTP_FILETIME",
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"SSH_SFTP_TRANS_INIT",
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"SSH_SFTP_UPLOAD_INIT",
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"SSH_SFTP_CREATE_DIRS_INIT",
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"SSH_SFTP_CREATE_DIRS",
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"SSH_SFTP_CREATE_DIRS_MKDIR",
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"SSH_SFTP_READDIR_INIT",
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"SSH_SFTP_READDIR",
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"SSH_SFTP_READDIR_LINK",
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"SSH_SFTP_READDIR_BOTTOM",
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"SSH_SFTP_READDIR_DONE",
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"SSH_SFTP_DOWNLOAD_INIT",
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"SSH_SFTP_DOWNLOAD_STAT",
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"SSH_SFTP_CLOSE",
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"SSH_SFTP_SHUTDOWN",
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"SSH_SCP_TRANS_INIT",
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"SSH_SCP_UPLOAD_INIT",
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"SSH_SCP_DOWNLOAD_INIT",
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"SSH_SCP_DOWNLOAD",
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"SSH_SCP_DONE",
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"SSH_SCP_SEND_EOF",
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"SSH_SCP_WAIT_EOF",
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"SSH_SCP_WAIT_CLOSE",
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"SSH_SCP_CHANNEL_FREE",
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"SSH_SESSION_DISCONNECT",
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"SSH_SESSION_FREE",
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"QUIT"
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};
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if(sshc->state != nowstate) {
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2018-07-05 23:43:29 +03:00
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infof(conn->data, "SSH %p state change from %s to %s (line %d)\n",
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(void *) sshc, names[sshc->state], names[nowstate],
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lineno);
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2017-10-23 14:49:23 +03:00
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}
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#endif
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sshc->state = nowstate;
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}
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/* Multiple options:
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* 1. data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5] is set with an MD5
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* hash (90s style auth, not sure we should have it here)
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* 2. data->set.ssh_keyfunc callback is set. Then we do trust on first
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* use. We even save on knownhosts if CURLKHSTAT_FINE_ADD_TO_FILE
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* is returned by it.
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* 3. none of the above. We only accept if it is present on known hosts.
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*
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* Returns SSH_OK or SSH_ERROR.
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*/
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static int myssh_is_known(struct connectdata *conn)
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{
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int rc;
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struct Curl_easy *data = conn->data;
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struct ssh_conn *sshc = &conn->proto.sshc;
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ssh_key pubkey;
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size_t hlen;
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unsigned char *hash = NULL;
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char *base64 = NULL;
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int vstate;
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enum curl_khmatch keymatch;
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struct curl_khkey foundkey;
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curl_sshkeycallback func =
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data->set.ssh_keyfunc;
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rc = ssh_get_publickey(sshc->ssh_session, &pubkey);
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if(rc != SSH_OK)
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return rc;
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if(data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5]) {
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rc = ssh_get_publickey_hash(pubkey, SSH_PUBLICKEY_HASH_MD5,
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&hash, &hlen);
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if(rc != SSH_OK)
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goto cleanup;
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if(hlen != strlen(data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5]) ||
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memcmp(&data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5], hash, hlen)) {
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2017-12-03 01:27:22 +03:00
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rc = SSH_ERROR;
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goto cleanup;
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2017-10-23 14:49:23 +03:00
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}
|
|
|
|
|
|
|
|
rc = SSH_OK;
|
|
|
|
goto cleanup;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(data->set.ssl.primary.verifyhost != TRUE) {
|
|
|
|
rc = SSH_OK;
|
|
|
|
goto cleanup;
|
|
|
|
}
|
|
|
|
|
|
|
|
vstate = ssh_is_server_known(sshc->ssh_session);
|
|
|
|
switch(vstate) {
|
|
|
|
case SSH_SERVER_KNOWN_OK:
|
|
|
|
keymatch = CURLKHMATCH_OK;
|
2017-12-03 01:27:22 +03:00
|
|
|
break;
|
2017-10-23 14:49:23 +03:00
|
|
|
case SSH_SERVER_FILE_NOT_FOUND:
|
2017-12-03 01:27:22 +03:00
|
|
|
/* fallthrough */
|
2017-10-23 14:49:23 +03:00
|
|
|
case SSH_SERVER_NOT_KNOWN:
|
|
|
|
keymatch = CURLKHMATCH_MISSING;
|
2017-12-03 01:27:22 +03:00
|
|
|
break;
|
|
|
|
default:
|
2017-10-23 14:49:23 +03:00
|
|
|
keymatch = CURLKHMATCH_MISMATCH;
|
2017-12-03 01:27:22 +03:00
|
|
|
break;
|
2017-10-23 14:49:23 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
if(func) { /* use callback to determine action */
|
|
|
|
rc = ssh_pki_export_pubkey_base64(pubkey, &base64);
|
|
|
|
if(rc != SSH_OK)
|
|
|
|
goto cleanup;
|
|
|
|
|
|
|
|
foundkey.key = base64;
|
|
|
|
foundkey.len = strlen(base64);
|
|
|
|
|
|
|
|
switch(ssh_key_type(pubkey)) {
|
|
|
|
case SSH_KEYTYPE_RSA:
|
|
|
|
foundkey.keytype = CURLKHTYPE_RSA;
|
|
|
|
break;
|
|
|
|
case SSH_KEYTYPE_RSA1:
|
|
|
|
foundkey.keytype = CURLKHTYPE_RSA1;
|
|
|
|
break;
|
|
|
|
case SSH_KEYTYPE_ECDSA:
|
|
|
|
foundkey.keytype = CURLKHTYPE_ECDSA;
|
|
|
|
break;
|
|
|
|
#if LIBSSH_VERSION_INT >= SSH_VERSION_INT(0,7,0)
|
|
|
|
case SSH_KEYTYPE_ED25519:
|
|
|
|
foundkey.keytype = CURLKHTYPE_ED25519;
|
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
case SSH_KEYTYPE_DSS:
|
|
|
|
foundkey.keytype = CURLKHTYPE_DSS;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
rc = SSH_ERROR;
|
|
|
|
goto cleanup;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* we don't have anything equivalent to knownkey. Always NULL */
|
2018-02-10 17:13:15 +03:00
|
|
|
Curl_set_in_callback(data, true);
|
2017-10-23 14:49:23 +03:00
|
|
|
rc = func(data, NULL, &foundkey, /* from the remote host */
|
|
|
|
keymatch, data->set.ssh_keyfunc_userp);
|
2018-02-10 17:13:15 +03:00
|
|
|
Curl_set_in_callback(data, false);
|
2017-10-23 14:49:23 +03:00
|
|
|
|
|
|
|
switch(rc) {
|
|
|
|
case CURLKHSTAT_FINE_ADD_TO_FILE:
|
|
|
|
rc = ssh_write_knownhost(sshc->ssh_session);
|
|
|
|
if(rc != SSH_OK) {
|
|
|
|
goto cleanup;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case CURLKHSTAT_FINE:
|
|
|
|
break;
|
|
|
|
default: /* REJECT/DEFER */
|
|
|
|
rc = SSH_ERROR;
|
|
|
|
goto cleanup;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
if(keymatch != CURLKHMATCH_OK) {
|
|
|
|
rc = SSH_ERROR;
|
|
|
|
goto cleanup;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
rc = SSH_OK;
|
|
|
|
|
|
|
|
cleanup:
|
|
|
|
if(hash)
|
|
|
|
ssh_clean_pubkey_hash(&hash);
|
|
|
|
ssh_key_free(pubkey);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
#define MOVE_TO_ERROR_STATE(_r) { \
|
2018-07-05 23:45:01 +03:00
|
|
|
state(conn, SSH_SESSION_DISCONNECT); \
|
2017-10-23 14:49:23 +03:00
|
|
|
sshc->actualcode = _r; \
|
|
|
|
rc = SSH_ERROR; \
|
|
|
|
break; \
|
|
|
|
}
|
|
|
|
|
2017-10-31 20:30:36 +03:00
|
|
|
#define MOVE_TO_SFTP_CLOSE_STATE() { \
|
|
|
|
state(conn, SSH_SFTP_CLOSE); \
|
|
|
|
sshc->actualcode = sftp_error_to_CURLE(sftp_get_error(sshc->sftp_session)); \
|
|
|
|
rc = SSH_ERROR; \
|
|
|
|
break; \
|
|
|
|
}
|
|
|
|
|
2017-10-23 14:49:23 +03:00
|
|
|
#define MOVE_TO_LAST_AUTH \
|
|
|
|
if(sshc->auth_methods & SSH_AUTH_METHOD_PASSWORD) { \
|
|
|
|
rc = SSH_OK; \
|
|
|
|
state(conn, SSH_AUTH_PASS_INIT); \
|
|
|
|
break; \
|
|
|
|
} \
|
|
|
|
else { \
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_LOGIN_DENIED); \
|
|
|
|
}
|
|
|
|
|
2017-10-31 20:30:36 +03:00
|
|
|
#define MOVE_TO_TERTIARY_AUTH \
|
|
|
|
if(sshc->auth_methods & SSH_AUTH_METHOD_INTERACTIVE) { \
|
|
|
|
rc = SSH_OK; \
|
|
|
|
state(conn, SSH_AUTH_KEY_INIT); \
|
|
|
|
break; \
|
|
|
|
} \
|
|
|
|
else { \
|
|
|
|
MOVE_TO_LAST_AUTH; \
|
|
|
|
}
|
|
|
|
|
2017-10-23 14:49:23 +03:00
|
|
|
#define MOVE_TO_SECONDARY_AUTH \
|
|
|
|
if(sshc->auth_methods & SSH_AUTH_METHOD_GSSAPI_MIC) { \
|
|
|
|
rc = SSH_OK; \
|
|
|
|
state(conn, SSH_AUTH_GSSAPI); \
|
|
|
|
break; \
|
|
|
|
} \
|
|
|
|
else { \
|
2017-10-31 20:30:36 +03:00
|
|
|
MOVE_TO_TERTIARY_AUTH; \
|
|
|
|
}
|
|
|
|
|
|
|
|
static
|
|
|
|
int myssh_auth_interactive(struct connectdata *conn)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
struct ssh_conn *sshc = &conn->proto.sshc;
|
|
|
|
int nprompts;
|
|
|
|
|
|
|
|
restart:
|
|
|
|
switch(sshc->kbd_state) {
|
|
|
|
case 0:
|
|
|
|
rc = ssh_userauth_kbdint(sshc->ssh_session, NULL, NULL);
|
|
|
|
if(rc == SSH_AUTH_AGAIN)
|
|
|
|
return SSH_AGAIN;
|
|
|
|
|
|
|
|
if(rc != SSH_AUTH_INFO)
|
|
|
|
return SSH_ERROR;
|
|
|
|
|
|
|
|
nprompts = ssh_userauth_kbdint_getnprompts(sshc->ssh_session);
|
|
|
|
if(nprompts == SSH_ERROR || nprompts != 1)
|
|
|
|
return SSH_ERROR;
|
|
|
|
|
|
|
|
rc = ssh_userauth_kbdint_setanswer(sshc->ssh_session, 0, conn->passwd);
|
|
|
|
if(rc < 0)
|
|
|
|
return SSH_ERROR;
|
|
|
|
|
2018-08-31 01:10:10 +03:00
|
|
|
/* FALLTHROUGH */
|
2017-10-31 20:30:36 +03:00
|
|
|
case 1:
|
|
|
|
sshc->kbd_state = 1;
|
|
|
|
|
|
|
|
rc = ssh_userauth_kbdint(sshc->ssh_session, NULL, NULL);
|
|
|
|
if(rc == SSH_AUTH_AGAIN)
|
|
|
|
return SSH_AGAIN;
|
|
|
|
else if(rc == SSH_AUTH_SUCCESS)
|
|
|
|
rc = SSH_OK;
|
|
|
|
else if(rc == SSH_AUTH_INFO) {
|
|
|
|
nprompts = ssh_userauth_kbdint_getnprompts(sshc->ssh_session);
|
|
|
|
if(nprompts != 0)
|
|
|
|
return SSH_ERROR;
|
|
|
|
|
|
|
|
sshc->kbd_state = 2;
|
|
|
|
goto restart;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
rc = SSH_ERROR;
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
sshc->kbd_state = 2;
|
|
|
|
|
|
|
|
rc = ssh_userauth_kbdint(sshc->ssh_session, NULL, NULL);
|
|
|
|
if(rc == SSH_AUTH_AGAIN)
|
|
|
|
return SSH_AGAIN;
|
|
|
|
else if(rc == SSH_AUTH_SUCCESS)
|
|
|
|
rc = SSH_OK;
|
|
|
|
else
|
|
|
|
rc = SSH_ERROR;
|
|
|
|
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return SSH_ERROR;
|
2017-10-23 14:49:23 +03:00
|
|
|
}
|
|
|
|
|
2017-10-31 20:30:36 +03:00
|
|
|
sshc->kbd_state = 0;
|
|
|
|
return rc;
|
|
|
|
}
|
2017-10-23 14:49:23 +03:00
|
|
|
|
|
|
|
/*
|
|
|
|
* ssh_statemach_act() runs the SSH state machine as far as it can without
|
|
|
|
* blocking and without reaching the end. The data the pointer 'block' points
|
|
|
|
* to will be set to TRUE if the libssh function returns SSH_AGAIN
|
|
|
|
* meaning it wants to be called again when the socket is ready
|
|
|
|
*/
|
|
|
|
static CURLcode myssh_statemach_act(struct connectdata *conn, bool *block)
|
|
|
|
{
|
|
|
|
CURLcode result = CURLE_OK;
|
|
|
|
struct Curl_easy *data = conn->data;
|
2018-12-23 19:40:46 +03:00
|
|
|
struct SSHPROTO *protop = data->req.protop;
|
2017-10-23 14:49:23 +03:00
|
|
|
struct ssh_conn *sshc = &conn->proto.sshc;
|
2019-01-24 01:47:55 +03:00
|
|
|
curl_socket_t sock = conn->sock[FIRSTSOCKET];
|
2017-10-31 20:30:36 +03:00
|
|
|
int rc = SSH_NO_ERROR, err;
|
|
|
|
char *new_readdir_line;
|
|
|
|
int seekerr = CURL_SEEKFUNC_OK;
|
2017-10-23 14:49:23 +03:00
|
|
|
const char *err_msg;
|
|
|
|
*block = 0; /* we're not blocking by default */
|
|
|
|
|
|
|
|
do {
|
|
|
|
|
|
|
|
switch(sshc->state) {
|
|
|
|
case SSH_INIT:
|
|
|
|
sshc->secondCreateDirs = 0;
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = CURLE_OK;
|
|
|
|
|
|
|
|
#if 0
|
2017-10-31 20:30:36 +03:00
|
|
|
ssh_set_log_level(SSH_LOG_PROTOCOL);
|
2017-10-23 14:49:23 +03:00
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Set libssh to non-blocking, since everything internally is
|
|
|
|
non-blocking */
|
|
|
|
ssh_set_blocking(sshc->ssh_session, 0);
|
|
|
|
|
|
|
|
state(conn, SSH_S_STARTUP);
|
2018-08-31 01:10:10 +03:00
|
|
|
/* FALLTHROUGH */
|
2017-10-23 14:49:23 +03:00
|
|
|
|
|
|
|
case SSH_S_STARTUP:
|
|
|
|
rc = ssh_connect(sshc->ssh_session);
|
|
|
|
if(rc == SSH_AGAIN)
|
|
|
|
break;
|
|
|
|
|
|
|
|
if(rc != SSH_OK) {
|
|
|
|
failf(data, "Failure establishing ssh session");
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_FAILED_INIT);
|
|
|
|
}
|
|
|
|
|
|
|
|
state(conn, SSH_HOSTKEY);
|
|
|
|
|
2018-08-31 01:10:10 +03:00
|
|
|
/* FALLTHROUGH */
|
2017-10-23 14:49:23 +03:00
|
|
|
case SSH_HOSTKEY:
|
|
|
|
|
|
|
|
rc = myssh_is_known(conn);
|
|
|
|
if(rc != SSH_OK) {
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_PEER_FAILED_VERIFICATION);
|
|
|
|
}
|
|
|
|
|
|
|
|
state(conn, SSH_AUTHLIST);
|
2018-08-31 01:10:10 +03:00
|
|
|
/* FALLTHROUGH */
|
2017-10-23 14:49:23 +03:00
|
|
|
case SSH_AUTHLIST:{
|
|
|
|
sshc->authed = FALSE;
|
|
|
|
|
|
|
|
rc = ssh_userauth_none(sshc->ssh_session, NULL);
|
|
|
|
if(rc == SSH_AUTH_AGAIN) {
|
|
|
|
rc = SSH_AGAIN;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(rc == SSH_AUTH_SUCCESS) {
|
|
|
|
sshc->authed = TRUE;
|
|
|
|
infof(data, "Authenticated with none\n");
|
|
|
|
state(conn, SSH_AUTH_DONE);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
else if(rc == SSH_AUTH_ERROR) {
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_LOGIN_DENIED);
|
|
|
|
}
|
|
|
|
|
|
|
|
sshc->auth_methods = ssh_userauth_list(sshc->ssh_session, NULL);
|
|
|
|
if(sshc->auth_methods & SSH_AUTH_METHOD_PUBLICKEY) {
|
|
|
|
state(conn, SSH_AUTH_PKEY_INIT);
|
2018-08-14 14:14:49 +03:00
|
|
|
infof(data, "Authentication using SSH public key file\n");
|
2017-10-23 14:49:23 +03:00
|
|
|
}
|
|
|
|
else if(sshc->auth_methods & SSH_AUTH_METHOD_GSSAPI_MIC) {
|
|
|
|
state(conn, SSH_AUTH_GSSAPI);
|
|
|
|
}
|
2017-10-31 20:30:36 +03:00
|
|
|
else if(sshc->auth_methods & SSH_AUTH_METHOD_INTERACTIVE) {
|
|
|
|
state(conn, SSH_AUTH_KEY_INIT);
|
|
|
|
}
|
2017-10-23 14:49:23 +03:00
|
|
|
else if(sshc->auth_methods & SSH_AUTH_METHOD_PASSWORD) {
|
|
|
|
state(conn, SSH_AUTH_PASS_INIT);
|
|
|
|
}
|
|
|
|
else { /* unsupported authentication method */
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_LOGIN_DENIED);
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case SSH_AUTH_PKEY_INIT:
|
|
|
|
if(!(data->set.ssh_auth_types & CURLSSH_AUTH_PUBLICKEY)) {
|
|
|
|
MOVE_TO_SECONDARY_AUTH;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Two choices, (1) private key was given on CMD,
|
|
|
|
* (2) use the "default" keys. */
|
|
|
|
if(data->set.str[STRING_SSH_PRIVATE_KEY]) {
|
|
|
|
if(sshc->pubkey && !data->set.ssl.key_passwd) {
|
|
|
|
rc = ssh_userauth_try_publickey(sshc->ssh_session, NULL,
|
|
|
|
sshc->pubkey);
|
|
|
|
if(rc == SSH_AUTH_AGAIN) {
|
|
|
|
rc = SSH_AGAIN;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(rc != SSH_OK) {
|
|
|
|
MOVE_TO_SECONDARY_AUTH;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
rc = ssh_pki_import_privkey_file(data->
|
|
|
|
set.str[STRING_SSH_PRIVATE_KEY],
|
|
|
|
data->set.ssl.key_passwd, NULL,
|
|
|
|
NULL, &sshc->privkey);
|
|
|
|
if(rc != SSH_OK) {
|
|
|
|
failf(data, "Could not load private key file %s",
|
|
|
|
data->set.str[STRING_SSH_PRIVATE_KEY]);
|
2018-08-14 13:47:18 +03:00
|
|
|
MOVE_TO_ERROR_STATE(CURLE_LOGIN_DENIED);
|
2017-10-23 14:49:23 +03:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
state(conn, SSH_AUTH_PKEY);
|
|
|
|
break;
|
|
|
|
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
rc = ssh_userauth_publickey_auto(sshc->ssh_session, NULL,
|
|
|
|
data->set.ssl.key_passwd);
|
|
|
|
if(rc == SSH_AUTH_AGAIN) {
|
|
|
|
rc = SSH_AGAIN;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if(rc == SSH_AUTH_SUCCESS) {
|
|
|
|
rc = SSH_OK;
|
|
|
|
sshc->authed = TRUE;
|
|
|
|
infof(data, "Completed public key authentication\n");
|
|
|
|
state(conn, SSH_AUTH_DONE);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
MOVE_TO_SECONDARY_AUTH;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case SSH_AUTH_PKEY:
|
|
|
|
rc = ssh_userauth_publickey(sshc->ssh_session, NULL, sshc->privkey);
|
|
|
|
if(rc == SSH_AUTH_AGAIN) {
|
|
|
|
rc = SSH_AGAIN;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(rc == SSH_AUTH_SUCCESS) {
|
|
|
|
sshc->authed = TRUE;
|
|
|
|
infof(data, "Completed public key authentication\n");
|
|
|
|
state(conn, SSH_AUTH_DONE);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
infof(data, "Failed public key authentication (rc: %d)\n", rc);
|
|
|
|
MOVE_TO_SECONDARY_AUTH;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_AUTH_GSSAPI:
|
|
|
|
if(!(data->set.ssh_auth_types & CURLSSH_AUTH_GSSAPI)) {
|
2017-10-31 20:30:36 +03:00
|
|
|
MOVE_TO_TERTIARY_AUTH;
|
2017-10-23 14:49:23 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
rc = ssh_userauth_gssapi(sshc->ssh_session);
|
|
|
|
if(rc == SSH_AUTH_AGAIN) {
|
|
|
|
rc = SSH_AGAIN;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2017-10-31 20:30:36 +03:00
|
|
|
if(rc == SSH_AUTH_SUCCESS) {
|
|
|
|
rc = SSH_OK;
|
|
|
|
sshc->authed = TRUE;
|
|
|
|
infof(data, "Completed gssapi authentication\n");
|
|
|
|
state(conn, SSH_AUTH_DONE);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
MOVE_TO_TERTIARY_AUTH;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_AUTH_KEY_INIT:
|
|
|
|
if(data->set.ssh_auth_types & CURLSSH_AUTH_KEYBOARD) {
|
|
|
|
state(conn, SSH_AUTH_KEY);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
MOVE_TO_LAST_AUTH;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_AUTH_KEY:
|
|
|
|
|
|
|
|
/* Authentication failed. Continue with keyboard-interactive now. */
|
|
|
|
rc = myssh_auth_interactive(conn);
|
|
|
|
if(rc == SSH_AGAIN) {
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if(rc == SSH_OK) {
|
|
|
|
sshc->authed = TRUE;
|
|
|
|
infof(data, "completed keyboard interactive authentication\n");
|
|
|
|
}
|
|
|
|
state(conn, SSH_AUTH_DONE);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_AUTH_PASS_INIT:
|
|
|
|
if(!(data->set.ssh_auth_types & CURLSSH_AUTH_PASSWORD)) {
|
|
|
|
/* Host key authentication is intentionally not implemented */
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_LOGIN_DENIED);
|
|
|
|
}
|
|
|
|
state(conn, SSH_AUTH_PASS);
|
2018-08-31 01:10:10 +03:00
|
|
|
/* FALLTHROUGH */
|
2017-10-31 20:30:36 +03:00
|
|
|
|
|
|
|
case SSH_AUTH_PASS:
|
|
|
|
rc = ssh_userauth_password(sshc->ssh_session, NULL, conn->passwd);
|
|
|
|
if(rc == SSH_AUTH_AGAIN) {
|
|
|
|
rc = SSH_AGAIN;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(rc == SSH_AUTH_SUCCESS) {
|
|
|
|
sshc->authed = TRUE;
|
|
|
|
infof(data, "Completed password authentication\n");
|
|
|
|
state(conn, SSH_AUTH_DONE);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_LOGIN_DENIED);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_AUTH_DONE:
|
|
|
|
if(!sshc->authed) {
|
|
|
|
failf(data, "Authentication failure");
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_LOGIN_DENIED);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* At this point we have an authenticated ssh session.
|
|
|
|
*/
|
|
|
|
infof(data, "Authentication complete\n");
|
|
|
|
|
|
|
|
Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSH is connected */
|
|
|
|
|
2019-01-24 01:47:55 +03:00
|
|
|
conn->sockfd = sock;
|
2017-10-31 20:30:36 +03:00
|
|
|
conn->writesockfd = CURL_SOCKET_BAD;
|
|
|
|
|
|
|
|
if(conn->handler->protocol == CURLPROTO_SFTP) {
|
|
|
|
state(conn, SSH_SFTP_INIT);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
infof(data, "SSH CONNECT phase done\n");
|
|
|
|
state(conn, SSH_STOP);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_INIT:
|
|
|
|
ssh_set_blocking(sshc->ssh_session, 1);
|
|
|
|
|
|
|
|
sshc->sftp_session = sftp_new(sshc->ssh_session);
|
|
|
|
if(!sshc->sftp_session) {
|
|
|
|
failf(data, "Failure initializing sftp session: %s",
|
|
|
|
ssh_get_error(sshc->ssh_session));
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_COULDNT_CONNECT);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
rc = sftp_init(sshc->sftp_session);
|
|
|
|
if(rc != SSH_OK) {
|
|
|
|
rc = sftp_get_error(sshc->sftp_session);
|
|
|
|
failf(data, "Failure initializing sftp session: %s",
|
|
|
|
ssh_get_error(sshc->ssh_session));
|
|
|
|
MOVE_TO_ERROR_STATE(sftp_error_to_CURLE(rc));
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
state(conn, SSH_SFTP_REALPATH);
|
2018-08-31 01:10:10 +03:00
|
|
|
/* FALLTHROUGH */
|
2017-10-31 20:30:36 +03:00
|
|
|
case SSH_SFTP_REALPATH:
|
|
|
|
/*
|
|
|
|
* Get the "home" directory
|
|
|
|
*/
|
|
|
|
sshc->homedir = sftp_canonicalize_path(sshc->sftp_session, ".");
|
|
|
|
if(sshc->homedir == NULL) {
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_COULDNT_CONNECT);
|
|
|
|
}
|
|
|
|
conn->data->state.most_recent_ftp_entrypath = sshc->homedir;
|
|
|
|
|
|
|
|
/* This is the last step in the SFTP connect phase. Do note that while
|
|
|
|
we get the homedir here, we get the "workingpath" in the DO action
|
|
|
|
since the homedir will remain the same between request but the
|
|
|
|
working path will not. */
|
|
|
|
DEBUGF(infof(data, "SSH CONNECT phase done\n"));
|
|
|
|
state(conn, SSH_STOP);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_QUOTE_INIT:
|
|
|
|
|
|
|
|
result = Curl_getworkingpath(conn, sshc->homedir, &protop->path);
|
|
|
|
if(result) {
|
|
|
|
sshc->actualcode = result;
|
|
|
|
state(conn, SSH_STOP);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(data->set.quote) {
|
|
|
|
infof(data, "Sending quote commands\n");
|
|
|
|
sshc->quote_item = data->set.quote;
|
|
|
|
state(conn, SSH_SFTP_QUOTE);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
state(conn, SSH_SFTP_GETINFO);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_POSTQUOTE_INIT:
|
|
|
|
if(data->set.postquote) {
|
|
|
|
infof(data, "Sending quote commands\n");
|
|
|
|
sshc->quote_item = data->set.postquote;
|
|
|
|
state(conn, SSH_SFTP_QUOTE);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
state(conn, SSH_STOP);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_QUOTE:
|
|
|
|
/* Send any quote commands */
|
|
|
|
sftp_quote(conn);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_NEXT_QUOTE:
|
|
|
|
Curl_safefree(sshc->quote_path1);
|
|
|
|
Curl_safefree(sshc->quote_path2);
|
|
|
|
|
|
|
|
sshc->quote_item = sshc->quote_item->next;
|
|
|
|
|
|
|
|
if(sshc->quote_item) {
|
|
|
|
state(conn, SSH_SFTP_QUOTE);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
if(sshc->nextstate != SSH_NO_STATE) {
|
|
|
|
state(conn, sshc->nextstate);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
state(conn, SSH_SFTP_GETINFO);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_QUOTE_STAT:
|
|
|
|
sftp_quote_stat(conn);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_QUOTE_SETSTAT:
|
|
|
|
rc = sftp_setstat(sshc->sftp_session, sshc->quote_path2,
|
|
|
|
sshc->quote_attrs);
|
|
|
|
if(rc != 0 && !sshc->acceptfail) {
|
|
|
|
Curl_safefree(sshc->quote_path1);
|
|
|
|
Curl_safefree(sshc->quote_path2);
|
|
|
|
failf(data, "Attempt to set SFTP stats failed: %s",
|
|
|
|
ssh_get_error(sshc->ssh_session));
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = CURLE_QUOTE_ERROR;
|
|
|
|
/* sshc->actualcode = sftp_error_to_CURLE(err);
|
|
|
|
* we do not send the actual error; we return
|
|
|
|
* the error the libssh2 backend is returning */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
state(conn, SSH_SFTP_NEXT_QUOTE);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_QUOTE_SYMLINK:
|
|
|
|
rc = sftp_symlink(sshc->sftp_session, sshc->quote_path2,
|
|
|
|
sshc->quote_path1);
|
|
|
|
if(rc != 0 && !sshc->acceptfail) {
|
|
|
|
Curl_safefree(sshc->quote_path1);
|
|
|
|
Curl_safefree(sshc->quote_path2);
|
|
|
|
failf(data, "symlink command failed: %s",
|
|
|
|
ssh_get_error(sshc->ssh_session));
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = CURLE_QUOTE_ERROR;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
state(conn, SSH_SFTP_NEXT_QUOTE);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_QUOTE_MKDIR:
|
|
|
|
rc = sftp_mkdir(sshc->sftp_session, sshc->quote_path1,
|
|
|
|
(mode_t)data->set.new_directory_perms);
|
|
|
|
if(rc != 0 && !sshc->acceptfail) {
|
|
|
|
Curl_safefree(sshc->quote_path1);
|
|
|
|
failf(data, "mkdir command failed: %s",
|
|
|
|
ssh_get_error(sshc->ssh_session));
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = CURLE_QUOTE_ERROR;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
state(conn, SSH_SFTP_NEXT_QUOTE);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_QUOTE_RENAME:
|
|
|
|
rc = sftp_rename(sshc->sftp_session, sshc->quote_path1,
|
|
|
|
sshc->quote_path2);
|
|
|
|
if(rc != 0 && !sshc->acceptfail) {
|
|
|
|
Curl_safefree(sshc->quote_path1);
|
|
|
|
Curl_safefree(sshc->quote_path2);
|
|
|
|
failf(data, "rename command failed: %s",
|
|
|
|
ssh_get_error(sshc->ssh_session));
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = CURLE_QUOTE_ERROR;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
state(conn, SSH_SFTP_NEXT_QUOTE);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_QUOTE_RMDIR:
|
|
|
|
rc = sftp_rmdir(sshc->sftp_session, sshc->quote_path1);
|
|
|
|
if(rc != 0 && !sshc->acceptfail) {
|
|
|
|
Curl_safefree(sshc->quote_path1);
|
|
|
|
failf(data, "rmdir command failed: %s",
|
|
|
|
ssh_get_error(sshc->ssh_session));
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = CURLE_QUOTE_ERROR;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
state(conn, SSH_SFTP_NEXT_QUOTE);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_QUOTE_UNLINK:
|
|
|
|
rc = sftp_unlink(sshc->sftp_session, sshc->quote_path1);
|
|
|
|
if(rc != 0 && !sshc->acceptfail) {
|
|
|
|
Curl_safefree(sshc->quote_path1);
|
|
|
|
failf(data, "rm command failed: %s",
|
|
|
|
ssh_get_error(sshc->ssh_session));
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = CURLE_QUOTE_ERROR;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
state(conn, SSH_SFTP_NEXT_QUOTE);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_QUOTE_STATVFS:
|
|
|
|
{
|
|
|
|
sftp_statvfs_t statvfs;
|
|
|
|
|
|
|
|
statvfs = sftp_statvfs(sshc->sftp_session, sshc->quote_path1);
|
2017-12-03 14:05:45 +03:00
|
|
|
if(!statvfs && !sshc->acceptfail) {
|
2017-10-31 20:30:36 +03:00
|
|
|
Curl_safefree(sshc->quote_path1);
|
2017-12-03 13:58:27 +03:00
|
|
|
failf(data, "statvfs command failed: %s",
|
|
|
|
ssh_get_error(sshc->ssh_session));
|
2017-10-31 20:30:36 +03:00
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = CURLE_QUOTE_ERROR;
|
|
|
|
break;
|
|
|
|
}
|
2017-12-04 12:48:01 +03:00
|
|
|
else if(statvfs) {
|
2017-10-31 20:30:36 +03:00
|
|
|
char *tmp = aprintf("statvfs:\n"
|
|
|
|
"f_bsize: %llu\n" "f_frsize: %llu\n"
|
|
|
|
"f_blocks: %llu\n" "f_bfree: %llu\n"
|
|
|
|
"f_bavail: %llu\n" "f_files: %llu\n"
|
|
|
|
"f_ffree: %llu\n" "f_favail: %llu\n"
|
|
|
|
"f_fsid: %llu\n" "f_flag: %llu\n"
|
|
|
|
"f_namemax: %llu\n",
|
|
|
|
statvfs->f_bsize, statvfs->f_frsize,
|
|
|
|
statvfs->f_blocks, statvfs->f_bfree,
|
|
|
|
statvfs->f_bavail, statvfs->f_files,
|
|
|
|
statvfs->f_ffree, statvfs->f_favail,
|
|
|
|
statvfs->f_fsid, statvfs->f_flag,
|
|
|
|
statvfs->f_namemax);
|
|
|
|
sftp_statvfs_free(statvfs);
|
|
|
|
|
|
|
|
if(!tmp) {
|
|
|
|
result = CURLE_OUT_OF_MEMORY;
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
result = Curl_client_write(conn, CLIENTWRITE_HEADER, tmp, strlen(tmp));
|
|
|
|
free(tmp);
|
|
|
|
if(result) {
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = result;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
state(conn, SSH_SFTP_NEXT_QUOTE);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case SSH_SFTP_GETINFO:
|
|
|
|
if(data->set.get_filetime) {
|
|
|
|
state(conn, SSH_SFTP_FILETIME);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
state(conn, SSH_SFTP_TRANS_INIT);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_FILETIME:
|
|
|
|
{
|
|
|
|
sftp_attributes attrs;
|
|
|
|
|
|
|
|
attrs = sftp_stat(sshc->sftp_session, protop->path);
|
|
|
|
if(attrs != 0) {
|
2018-02-01 02:24:19 +03:00
|
|
|
data->info.filetime = attrs->mtime;
|
2017-10-31 20:30:36 +03:00
|
|
|
sftp_attributes_free(attrs);
|
|
|
|
}
|
|
|
|
|
|
|
|
state(conn, SSH_SFTP_TRANS_INIT);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case SSH_SFTP_TRANS_INIT:
|
|
|
|
if(data->set.upload)
|
|
|
|
state(conn, SSH_SFTP_UPLOAD_INIT);
|
|
|
|
else {
|
|
|
|
if(protop->path[strlen(protop->path)-1] == '/')
|
|
|
|
state(conn, SSH_SFTP_READDIR_INIT);
|
|
|
|
else
|
|
|
|
state(conn, SSH_SFTP_DOWNLOAD_INIT);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_UPLOAD_INIT:
|
|
|
|
{
|
|
|
|
int flags;
|
|
|
|
|
|
|
|
if(data->state.resume_from != 0) {
|
|
|
|
sftp_attributes attrs;
|
|
|
|
|
|
|
|
if(data->state.resume_from < 0) {
|
|
|
|
attrs = sftp_stat(sshc->sftp_session, protop->path);
|
|
|
|
if(attrs != 0) {
|
|
|
|
curl_off_t size = attrs->size;
|
|
|
|
if(size < 0) {
|
|
|
|
failf(data, "Bad file size (%" CURL_FORMAT_CURL_OFF_T ")", size);
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_BAD_DOWNLOAD_RESUME);
|
|
|
|
}
|
|
|
|
data->state.resume_from = attrs->size;
|
|
|
|
|
|
|
|
sftp_attributes_free(attrs);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
data->state.resume_from = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if(data->set.ftp_append)
|
|
|
|
/* Try to open for append, but create if nonexisting */
|
|
|
|
flags = O_WRONLY|O_CREAT|O_APPEND;
|
|
|
|
else if(data->state.resume_from > 0)
|
|
|
|
/* If we have restart position then open for append */
|
|
|
|
flags = O_WRONLY|O_APPEND;
|
|
|
|
else
|
|
|
|
/* Clear file before writing (normal behaviour) */
|
|
|
|
flags = O_WRONLY|O_APPEND|O_CREAT|O_TRUNC;
|
|
|
|
|
|
|
|
if(sshc->sftp_file)
|
|
|
|
sftp_close(sshc->sftp_file);
|
|
|
|
sshc->sftp_file =
|
|
|
|
sftp_open(sshc->sftp_session, protop->path,
|
|
|
|
flags, (mode_t)data->set.new_file_perms);
|
|
|
|
if(!sshc->sftp_file) {
|
|
|
|
err = sftp_get_error(sshc->sftp_session);
|
|
|
|
|
|
|
|
if(((err == SSH_FX_NO_SUCH_FILE || err == SSH_FX_FAILURE ||
|
|
|
|
err == SSH_FX_NO_SUCH_PATH)) &&
|
|
|
|
(data->set.ftp_create_missing_dirs &&
|
|
|
|
(strlen(protop->path) > 1))) {
|
|
|
|
/* try to create the path remotely */
|
|
|
|
rc = 0;
|
|
|
|
sshc->secondCreateDirs = 1;
|
|
|
|
state(conn, SSH_SFTP_CREATE_DIRS_INIT);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
MOVE_TO_SFTP_CLOSE_STATE();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* If we have a restart point then we need to seek to the correct
|
|
|
|
position. */
|
|
|
|
if(data->state.resume_from > 0) {
|
|
|
|
/* Let's read off the proper amount of bytes from the input. */
|
|
|
|
if(conn->seek_func) {
|
2018-02-10 17:13:15 +03:00
|
|
|
Curl_set_in_callback(data, true);
|
2017-10-31 20:30:36 +03:00
|
|
|
seekerr = conn->seek_func(conn->seek_client, data->state.resume_from,
|
|
|
|
SEEK_SET);
|
2018-02-10 17:13:15 +03:00
|
|
|
Curl_set_in_callback(data, false);
|
2017-10-31 20:30:36 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
if(seekerr != CURL_SEEKFUNC_OK) {
|
|
|
|
curl_off_t passed = 0;
|
|
|
|
|
|
|
|
if(seekerr != CURL_SEEKFUNC_CANTSEEK) {
|
|
|
|
failf(data, "Could not seek stream");
|
|
|
|
return CURLE_FTP_COULDNT_USE_REST;
|
|
|
|
}
|
|
|
|
/* seekerr == CURL_SEEKFUNC_CANTSEEK (can't seek to offset) */
|
|
|
|
do {
|
|
|
|
size_t readthisamountnow =
|
|
|
|
(data->state.resume_from - passed > data->set.buffer_size) ?
|
|
|
|
(size_t)data->set.buffer_size :
|
|
|
|
curlx_sotouz(data->state.resume_from - passed);
|
|
|
|
|
|
|
|
size_t actuallyread =
|
|
|
|
data->state.fread_func(data->state.buffer, 1,
|
|
|
|
readthisamountnow, data->state.in);
|
|
|
|
|
|
|
|
passed += actuallyread;
|
|
|
|
if((actuallyread == 0) || (actuallyread > readthisamountnow)) {
|
|
|
|
/* this checks for greater-than only to make sure that the
|
|
|
|
CURL_READFUNC_ABORT return code still aborts */
|
|
|
|
failf(data, "Failed to read data");
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_FTP_COULDNT_USE_REST);
|
|
|
|
}
|
|
|
|
} while(passed < data->state.resume_from);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* now, decrease the size of the read */
|
|
|
|
if(data->state.infilesize > 0) {
|
|
|
|
data->state.infilesize -= data->state.resume_from;
|
|
|
|
data->req.size = data->state.infilesize;
|
|
|
|
Curl_pgrsSetUploadSize(data, data->state.infilesize);
|
|
|
|
}
|
|
|
|
|
|
|
|
rc = sftp_seek64(sshc->sftp_file, data->state.resume_from);
|
|
|
|
if(rc != 0) {
|
|
|
|
MOVE_TO_SFTP_CLOSE_STATE();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if(data->state.infilesize > 0) {
|
|
|
|
data->req.size = data->state.infilesize;
|
|
|
|
Curl_pgrsSetUploadSize(data, data->state.infilesize);
|
|
|
|
}
|
|
|
|
/* upload data */
|
2019-02-28 13:36:26 +03:00
|
|
|
Curl_setup_transfer(data, -1, -1, FALSE, FIRSTSOCKET);
|
2017-10-31 20:30:36 +03:00
|
|
|
|
|
|
|
/* not set by Curl_setup_transfer to preserve keepon bits */
|
|
|
|
conn->sockfd = conn->writesockfd;
|
|
|
|
|
|
|
|
/* store this original bitmask setup to use later on if we can't
|
|
|
|
figure out a "real" bitmask */
|
|
|
|
sshc->orig_waitfor = data->req.keepon;
|
|
|
|
|
|
|
|
/* we want to use the _sending_ function even when the socket turns
|
|
|
|
out readable as the underlying libssh sftp send function will deal
|
|
|
|
with both accordingly */
|
|
|
|
conn->cselect_bits = CURL_CSELECT_OUT;
|
|
|
|
|
|
|
|
/* since we don't really wait for anything at this point, we want the
|
|
|
|
state machine to move on as soon as possible so we set a very short
|
|
|
|
timeout here */
|
|
|
|
Curl_expire(data, 0, EXPIRE_RUN_NOW);
|
|
|
|
|
|
|
|
state(conn, SSH_STOP);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
case SSH_SFTP_CREATE_DIRS_INIT:
|
|
|
|
if(strlen(protop->path) > 1) {
|
|
|
|
sshc->slash_pos = protop->path + 1; /* ignore the leading '/' */
|
|
|
|
state(conn, SSH_SFTP_CREATE_DIRS);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
state(conn, SSH_SFTP_UPLOAD_INIT);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_CREATE_DIRS:
|
|
|
|
sshc->slash_pos = strchr(sshc->slash_pos, '/');
|
|
|
|
if(sshc->slash_pos) {
|
|
|
|
*sshc->slash_pos = 0;
|
|
|
|
|
|
|
|
infof(data, "Creating directory '%s'\n", protop->path);
|
|
|
|
state(conn, SSH_SFTP_CREATE_DIRS_MKDIR);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
state(conn, SSH_SFTP_UPLOAD_INIT);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_CREATE_DIRS_MKDIR:
|
|
|
|
/* 'mode' - parameter is preliminary - default to 0644 */
|
|
|
|
rc = sftp_mkdir(sshc->sftp_session, protop->path,
|
|
|
|
(mode_t)data->set.new_directory_perms);
|
|
|
|
*sshc->slash_pos = '/';
|
|
|
|
++sshc->slash_pos;
|
|
|
|
if(rc < 0) {
|
|
|
|
/*
|
|
|
|
* Abort if failure wasn't that the dir already exists or the
|
|
|
|
* permission was denied (creation might succeed further down the
|
|
|
|
* path) - retry on unspecific FAILURE also
|
|
|
|
*/
|
|
|
|
err = sftp_get_error(sshc->sftp_session);
|
|
|
|
if((err != SSH_FX_FILE_ALREADY_EXISTS) &&
|
|
|
|
(err != SSH_FX_FAILURE) &&
|
|
|
|
(err != SSH_FX_PERMISSION_DENIED)) {
|
|
|
|
MOVE_TO_SFTP_CLOSE_STATE();
|
|
|
|
}
|
|
|
|
rc = 0; /* clear rc and continue */
|
|
|
|
}
|
|
|
|
state(conn, SSH_SFTP_CREATE_DIRS);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_READDIR_INIT:
|
|
|
|
Curl_pgrsSetDownloadSize(data, -1);
|
|
|
|
if(data->set.opt_no_body) {
|
|
|
|
state(conn, SSH_STOP);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This is a directory that we are trying to get, so produce a directory
|
|
|
|
* listing
|
|
|
|
*/
|
|
|
|
sshc->sftp_dir = sftp_opendir(sshc->sftp_session,
|
|
|
|
protop->path);
|
|
|
|
if(!sshc->sftp_dir) {
|
|
|
|
failf(data, "Could not open directory for reading: %s",
|
|
|
|
ssh_get_error(sshc->ssh_session));
|
|
|
|
MOVE_TO_SFTP_CLOSE_STATE();
|
|
|
|
}
|
|
|
|
state(conn, SSH_SFTP_READDIR);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_READDIR:
|
|
|
|
|
|
|
|
if(sshc->readdir_attrs)
|
|
|
|
sftp_attributes_free(sshc->readdir_attrs);
|
|
|
|
|
|
|
|
sshc->readdir_attrs = sftp_readdir(sshc->sftp_session, sshc->sftp_dir);
|
|
|
|
if(sshc->readdir_attrs) {
|
|
|
|
sshc->readdir_filename = sshc->readdir_attrs->name;
|
|
|
|
sshc->readdir_longentry = sshc->readdir_attrs->longname;
|
2018-08-31 11:17:40 +03:00
|
|
|
sshc->readdir_len = strlen(sshc->readdir_filename);
|
2017-10-31 20:30:36 +03:00
|
|
|
|
|
|
|
if(data->set.ftp_list_only) {
|
|
|
|
char *tmpLine;
|
|
|
|
|
|
|
|
tmpLine = aprintf("%s\n", sshc->readdir_filename);
|
|
|
|
if(tmpLine == NULL) {
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->actualcode = CURLE_OUT_OF_MEMORY;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
result = Curl_client_write(conn, CLIENTWRITE_BODY,
|
|
|
|
tmpLine, sshc->readdir_len + 1);
|
|
|
|
free(tmpLine);
|
|
|
|
|
|
|
|
if(result) {
|
|
|
|
state(conn, SSH_STOP);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
/* since this counts what we send to the client, we include the
|
|
|
|
newline in this counter */
|
|
|
|
data->req.bytecount += sshc->readdir_len + 1;
|
|
|
|
|
|
|
|
/* output debug output if that is requested */
|
|
|
|
if(data->set.verbose) {
|
|
|
|
Curl_debug(data, CURLINFO_DATA_OUT,
|
|
|
|
(char *)sshc->readdir_filename,
|
2018-06-12 01:10:43 +03:00
|
|
|
sshc->readdir_len);
|
2017-10-31 20:30:36 +03:00
|
|
|
}
|
|
|
|
}
|
|
|
|
else {
|
2018-08-31 11:17:40 +03:00
|
|
|
sshc->readdir_currLen = strlen(sshc->readdir_longentry);
|
2017-10-31 20:30:36 +03:00
|
|
|
sshc->readdir_totalLen = 80 + sshc->readdir_currLen;
|
|
|
|
sshc->readdir_line = calloc(sshc->readdir_totalLen, 1);
|
|
|
|
if(!sshc->readdir_line) {
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->actualcode = CURLE_OUT_OF_MEMORY;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
memcpy(sshc->readdir_line, sshc->readdir_longentry,
|
|
|
|
sshc->readdir_currLen);
|
|
|
|
if((sshc->readdir_attrs->flags & SSH_FILEXFER_ATTR_PERMISSIONS) &&
|
|
|
|
((sshc->readdir_attrs->permissions & S_IFMT) ==
|
|
|
|
S_IFLNK)) {
|
|
|
|
sshc->readdir_linkPath = malloc(PATH_MAX + 1);
|
|
|
|
if(sshc->readdir_linkPath == NULL) {
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->actualcode = CURLE_OUT_OF_MEMORY;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2018-11-22 11:01:24 +03:00
|
|
|
msnprintf(sshc->readdir_linkPath, PATH_MAX, "%s%s", protop->path,
|
|
|
|
sshc->readdir_filename);
|
2017-10-31 20:30:36 +03:00
|
|
|
|
|
|
|
state(conn, SSH_SFTP_READDIR_LINK);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
state(conn, SSH_SFTP_READDIR_BOTTOM);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if(sshc->readdir_attrs == NULL && sftp_dir_eof(sshc->sftp_dir)) {
|
|
|
|
state(conn, SSH_SFTP_READDIR_DONE);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
failf(data, "Could not open remote file for reading: %s",
|
|
|
|
ssh_get_error(sshc->ssh_session));
|
|
|
|
MOVE_TO_SFTP_CLOSE_STATE();
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_READDIR_LINK:
|
|
|
|
if(sshc->readdir_link_attrs)
|
|
|
|
sftp_attributes_free(sshc->readdir_link_attrs);
|
|
|
|
|
|
|
|
sshc->readdir_link_attrs = sftp_lstat(sshc->sftp_session,
|
|
|
|
sshc->readdir_linkPath);
|
|
|
|
if(sshc->readdir_link_attrs == 0) {
|
|
|
|
failf(data, "Could not read symlink for reading: %s",
|
|
|
|
ssh_get_error(sshc->ssh_session));
|
|
|
|
MOVE_TO_SFTP_CLOSE_STATE();
|
|
|
|
}
|
|
|
|
|
|
|
|
if(sshc->readdir_link_attrs->name == NULL) {
|
|
|
|
sshc->readdir_tmp = sftp_readlink(sshc->sftp_session,
|
|
|
|
sshc->readdir_linkPath);
|
|
|
|
if(sshc->readdir_filename == NULL)
|
|
|
|
sshc->readdir_len = 0;
|
|
|
|
else
|
2018-08-31 11:17:40 +03:00
|
|
|
sshc->readdir_len = strlen(sshc->readdir_tmp);
|
2017-10-31 20:30:36 +03:00
|
|
|
sshc->readdir_longentry = NULL;
|
|
|
|
sshc->readdir_filename = sshc->readdir_tmp;
|
|
|
|
}
|
|
|
|
else {
|
2018-08-31 11:17:40 +03:00
|
|
|
sshc->readdir_len = strlen(sshc->readdir_link_attrs->name);
|
2017-10-31 20:30:36 +03:00
|
|
|
sshc->readdir_filename = sshc->readdir_link_attrs->name;
|
|
|
|
sshc->readdir_longentry = sshc->readdir_link_attrs->longname;
|
|
|
|
}
|
|
|
|
|
|
|
|
Curl_safefree(sshc->readdir_linkPath);
|
|
|
|
|
|
|
|
/* get room for the filename and extra output */
|
|
|
|
sshc->readdir_totalLen += 4 + sshc->readdir_len;
|
|
|
|
new_readdir_line = Curl_saferealloc(sshc->readdir_line,
|
|
|
|
sshc->readdir_totalLen);
|
|
|
|
if(!new_readdir_line) {
|
|
|
|
sshc->readdir_line = NULL;
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->actualcode = CURLE_OUT_OF_MEMORY;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
sshc->readdir_line = new_readdir_line;
|
|
|
|
|
2018-11-22 11:01:24 +03:00
|
|
|
sshc->readdir_currLen += msnprintf(sshc->readdir_line +
|
|
|
|
sshc->readdir_currLen,
|
|
|
|
sshc->readdir_totalLen -
|
|
|
|
sshc->readdir_currLen,
|
|
|
|
" -> %s",
|
|
|
|
sshc->readdir_filename);
|
2017-10-31 20:30:36 +03:00
|
|
|
|
|
|
|
sftp_attributes_free(sshc->readdir_link_attrs);
|
|
|
|
sshc->readdir_link_attrs = NULL;
|
|
|
|
sshc->readdir_filename = NULL;
|
|
|
|
sshc->readdir_longentry = NULL;
|
|
|
|
|
|
|
|
state(conn, SSH_SFTP_READDIR_BOTTOM);
|
2018-08-31 01:10:10 +03:00
|
|
|
/* FALLTHROUGH */
|
2017-10-31 20:30:36 +03:00
|
|
|
case SSH_SFTP_READDIR_BOTTOM:
|
2018-11-22 11:01:24 +03:00
|
|
|
sshc->readdir_currLen += msnprintf(sshc->readdir_line +
|
|
|
|
sshc->readdir_currLen,
|
|
|
|
sshc->readdir_totalLen -
|
|
|
|
sshc->readdir_currLen, "\n");
|
2017-10-31 20:30:36 +03:00
|
|
|
result = Curl_client_write(conn, CLIENTWRITE_BODY,
|
|
|
|
sshc->readdir_line,
|
|
|
|
sshc->readdir_currLen);
|
|
|
|
|
|
|
|
if(!result) {
|
|
|
|
|
|
|
|
/* output debug output if that is requested */
|
|
|
|
if(data->set.verbose) {
|
|
|
|
Curl_debug(data, CURLINFO_DATA_OUT, sshc->readdir_line,
|
2018-06-12 01:10:43 +03:00
|
|
|
sshc->readdir_currLen);
|
2017-10-31 20:30:36 +03:00
|
|
|
}
|
|
|
|
data->req.bytecount += sshc->readdir_currLen;
|
|
|
|
}
|
|
|
|
Curl_safefree(sshc->readdir_line);
|
|
|
|
ssh_string_free_char(sshc->readdir_tmp);
|
|
|
|
sshc->readdir_tmp = NULL;
|
|
|
|
|
|
|
|
if(result) {
|
|
|
|
state(conn, SSH_STOP);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
state(conn, SSH_SFTP_READDIR);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_READDIR_DONE:
|
|
|
|
sftp_closedir(sshc->sftp_dir);
|
|
|
|
sshc->sftp_dir = NULL;
|
|
|
|
|
|
|
|
/* no data to transfer */
|
2019-02-28 13:36:26 +03:00
|
|
|
Curl_setup_transfer(data, -1, -1, FALSE, -1);
|
2017-10-31 20:30:36 +03:00
|
|
|
state(conn, SSH_STOP);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_DOWNLOAD_INIT:
|
|
|
|
/*
|
|
|
|
* Work on getting the specified file
|
|
|
|
*/
|
|
|
|
if(sshc->sftp_file)
|
|
|
|
sftp_close(sshc->sftp_file);
|
|
|
|
|
|
|
|
sshc->sftp_file = sftp_open(sshc->sftp_session, protop->path,
|
|
|
|
O_RDONLY, (mode_t)data->set.new_file_perms);
|
|
|
|
if(!sshc->sftp_file) {
|
|
|
|
failf(data, "Could not open remote file for reading: %s",
|
|
|
|
ssh_get_error(sshc->ssh_session));
|
|
|
|
|
|
|
|
MOVE_TO_SFTP_CLOSE_STATE();
|
2017-10-23 14:49:23 +03:00
|
|
|
}
|
|
|
|
|
2017-10-31 20:30:36 +03:00
|
|
|
state(conn, SSH_SFTP_DOWNLOAD_STAT);
|
2017-10-23 14:49:23 +03:00
|
|
|
break;
|
|
|
|
|
2017-10-31 20:30:36 +03:00
|
|
|
case SSH_SFTP_DOWNLOAD_STAT:
|
|
|
|
{
|
|
|
|
sftp_attributes attrs;
|
|
|
|
curl_off_t size;
|
|
|
|
|
|
|
|
attrs = sftp_fstat(sshc->sftp_file);
|
|
|
|
if(!attrs ||
|
|
|
|
!(attrs->flags & SSH_FILEXFER_ATTR_SIZE) ||
|
|
|
|
(attrs->size == 0)) {
|
|
|
|
/*
|
|
|
|
* sftp_fstat didn't return an error, so maybe the server
|
|
|
|
* just doesn't support stat()
|
|
|
|
* OR the server doesn't return a file size with a stat()
|
|
|
|
* OR file size is 0
|
|
|
|
*/
|
|
|
|
data->req.size = -1;
|
|
|
|
data->req.maxdownload = -1;
|
|
|
|
Curl_pgrsSetDownloadSize(data, -1);
|
|
|
|
size = 0;
|
2017-10-23 14:49:23 +03:00
|
|
|
}
|
2017-10-31 20:30:36 +03:00
|
|
|
else {
|
|
|
|
size = attrs->size;
|
2017-10-23 14:49:23 +03:00
|
|
|
|
2017-10-31 20:30:36 +03:00
|
|
|
sftp_attributes_free(attrs);
|
|
|
|
|
|
|
|
if(size < 0) {
|
|
|
|
failf(data, "Bad file size (%" CURL_FORMAT_CURL_OFF_T ")", size);
|
|
|
|
return CURLE_BAD_DOWNLOAD_RESUME;
|
|
|
|
}
|
|
|
|
if(conn->data->state.use_range) {
|
|
|
|
curl_off_t from, to;
|
|
|
|
char *ptr;
|
|
|
|
char *ptr2;
|
|
|
|
CURLofft to_t;
|
|
|
|
CURLofft from_t;
|
|
|
|
|
|
|
|
from_t = curlx_strtoofft(conn->data->state.range, &ptr, 0, &from);
|
|
|
|
if(from_t == CURL_OFFT_FLOW) {
|
|
|
|
return CURLE_RANGE_ERROR;
|
|
|
|
}
|
|
|
|
while(*ptr && (ISSPACE(*ptr) || (*ptr == '-')))
|
|
|
|
ptr++;
|
|
|
|
to_t = curlx_strtoofft(ptr, &ptr2, 0, &to);
|
|
|
|
if(to_t == CURL_OFFT_FLOW) {
|
|
|
|
return CURLE_RANGE_ERROR;
|
|
|
|
}
|
|
|
|
if((to_t == CURL_OFFT_INVAL) /* no "to" value given */
|
|
|
|
|| (to >= size)) {
|
|
|
|
to = size - 1;
|
|
|
|
}
|
|
|
|
if(from_t) {
|
|
|
|
/* from is relative to end of file */
|
|
|
|
from = size - to;
|
|
|
|
to = size - 1;
|
|
|
|
}
|
|
|
|
if(from > size) {
|
|
|
|
failf(data, "Offset (%"
|
|
|
|
CURL_FORMAT_CURL_OFF_T ") was beyond file size (%"
|
|
|
|
CURL_FORMAT_CURL_OFF_T ")", from, size);
|
|
|
|
return CURLE_BAD_DOWNLOAD_RESUME;
|
|
|
|
}
|
|
|
|
if(from > to) {
|
|
|
|
from = to;
|
|
|
|
size = 0;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
size = to - from + 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
rc = sftp_seek64(sshc->sftp_file, from);
|
|
|
|
if(rc != 0) {
|
|
|
|
MOVE_TO_SFTP_CLOSE_STATE();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
data->req.size = size;
|
|
|
|
data->req.maxdownload = size;
|
|
|
|
Curl_pgrsSetDownloadSize(data, size);
|
2017-10-23 14:49:23 +03:00
|
|
|
}
|
|
|
|
|
2017-10-31 20:30:36 +03:00
|
|
|
/* We can resume if we can seek to the resume position */
|
|
|
|
if(data->state.resume_from) {
|
|
|
|
if(data->state.resume_from < 0) {
|
|
|
|
/* We're supposed to download the last abs(from) bytes */
|
|
|
|
if((curl_off_t)size < -data->state.resume_from) {
|
|
|
|
failf(data, "Offset (%"
|
|
|
|
CURL_FORMAT_CURL_OFF_T ") was beyond file size (%"
|
|
|
|
CURL_FORMAT_CURL_OFF_T ")",
|
|
|
|
data->state.resume_from, size);
|
|
|
|
return CURLE_BAD_DOWNLOAD_RESUME;
|
|
|
|
}
|
|
|
|
/* download from where? */
|
|
|
|
data->state.resume_from += size;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
if((curl_off_t)size < data->state.resume_from) {
|
|
|
|
failf(data, "Offset (%" CURL_FORMAT_CURL_OFF_T
|
|
|
|
") was beyond file size (%" CURL_FORMAT_CURL_OFF_T ")",
|
|
|
|
data->state.resume_from, size);
|
|
|
|
return CURLE_BAD_DOWNLOAD_RESUME;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/* Does a completed file need to be seeked and started or closed ? */
|
|
|
|
/* Now store the number of bytes we are expected to download */
|
|
|
|
data->req.size = size - data->state.resume_from;
|
|
|
|
data->req.maxdownload = size - data->state.resume_from;
|
|
|
|
Curl_pgrsSetDownloadSize(data,
|
|
|
|
size - data->state.resume_from);
|
|
|
|
|
|
|
|
rc = sftp_seek64(sshc->sftp_file, data->state.resume_from);
|
|
|
|
if(rc != 0) {
|
|
|
|
MOVE_TO_SFTP_CLOSE_STATE();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Setup the actual download */
|
|
|
|
if(data->req.size == 0) {
|
|
|
|
/* no data to transfer */
|
2019-02-28 13:36:26 +03:00
|
|
|
Curl_setup_transfer(data, -1, -1, FALSE, -1);
|
2017-10-31 20:30:36 +03:00
|
|
|
infof(data, "File already completely downloaded\n");
|
|
|
|
state(conn, SSH_STOP);
|
|
|
|
break;
|
|
|
|
}
|
2019-02-28 13:36:26 +03:00
|
|
|
Curl_setup_transfer(data, FIRSTSOCKET, data->req.size, FALSE, -1);
|
2017-10-31 20:30:36 +03:00
|
|
|
|
|
|
|
/* not set by Curl_setup_transfer to preserve keepon bits */
|
|
|
|
conn->writesockfd = conn->sockfd;
|
|
|
|
|
|
|
|
/* we want to use the _receiving_ function even when the socket turns
|
|
|
|
out writableable as the underlying libssh recv function will deal
|
|
|
|
with both accordingly */
|
|
|
|
conn->cselect_bits = CURL_CSELECT_IN;
|
|
|
|
|
|
|
|
if(result) {
|
|
|
|
/* this should never occur; the close state should be entered
|
|
|
|
at the time the error occurs */
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->actualcode = result;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
sshc->sftp_recv_state = 0;
|
|
|
|
state(conn, SSH_STOP);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SFTP_CLOSE:
|
|
|
|
if(sshc->sftp_file) {
|
|
|
|
sftp_close(sshc->sftp_file);
|
|
|
|
sshc->sftp_file = NULL;
|
|
|
|
}
|
2017-12-03 01:27:22 +03:00
|
|
|
Curl_safefree(protop->path);
|
2017-10-31 20:30:36 +03:00
|
|
|
|
|
|
|
DEBUGF(infof(data, "SFTP DONE done\n"));
|
|
|
|
|
|
|
|
/* Check if nextstate is set and move .nextstate could be POSTQUOTE_INIT
|
|
|
|
After nextstate is executed, the control should come back to
|
|
|
|
SSH_SFTP_CLOSE to pass the correct result back */
|
|
|
|
if(sshc->nextstate != SSH_NO_STATE &&
|
|
|
|
sshc->nextstate != SSH_SFTP_CLOSE) {
|
|
|
|
state(conn, sshc->nextstate);
|
|
|
|
sshc->nextstate = SSH_SFTP_CLOSE;
|
2017-10-23 14:49:23 +03:00
|
|
|
}
|
|
|
|
else {
|
2017-10-31 20:30:36 +03:00
|
|
|
state(conn, SSH_STOP);
|
|
|
|
result = sshc->actualcode;
|
2017-10-23 14:49:23 +03:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
2017-10-31 20:30:36 +03:00
|
|
|
case SSH_SFTP_SHUTDOWN:
|
|
|
|
/* during times we get here due to a broken transfer and then the
|
|
|
|
sftp_handle might not have been taken down so make sure that is done
|
|
|
|
before we proceed */
|
2017-10-23 14:49:23 +03:00
|
|
|
|
2017-10-31 20:30:36 +03:00
|
|
|
if(sshc->sftp_file) {
|
|
|
|
sftp_close(sshc->sftp_file);
|
|
|
|
sshc->sftp_file = NULL;
|
|
|
|
}
|
2017-10-23 14:49:23 +03:00
|
|
|
|
2017-10-31 20:30:36 +03:00
|
|
|
if(sshc->sftp_session) {
|
|
|
|
sftp_free(sshc->sftp_session);
|
|
|
|
sshc->sftp_session = NULL;
|
|
|
|
}
|
2017-10-23 14:49:23 +03:00
|
|
|
|
2018-12-21 16:22:42 +03:00
|
|
|
SSH_STRING_FREE_CHAR(sshc->homedir);
|
2017-10-31 20:30:36 +03:00
|
|
|
conn->data->state.most_recent_ftp_entrypath = NULL;
|
2017-10-23 14:49:23 +03:00
|
|
|
|
2017-10-31 20:30:36 +03:00
|
|
|
state(conn, SSH_SESSION_DISCONNECT);
|
2017-10-23 14:49:23 +03:00
|
|
|
break;
|
|
|
|
|
2017-10-31 20:30:36 +03:00
|
|
|
|
2017-10-23 14:49:23 +03:00
|
|
|
case SSH_SCP_TRANS_INIT:
|
|
|
|
result = Curl_getworkingpath(conn, sshc->homedir, &protop->path);
|
|
|
|
if(result) {
|
|
|
|
sshc->actualcode = result;
|
|
|
|
state(conn, SSH_STOP);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Functions from the SCP subsystem cannot handle/return SSH_AGAIN */
|
|
|
|
ssh_set_blocking(sshc->ssh_session, 1);
|
|
|
|
|
|
|
|
if(data->set.upload) {
|
|
|
|
if(data->state.infilesize < 0) {
|
|
|
|
failf(data, "SCP requires a known file size for upload");
|
|
|
|
sshc->actualcode = CURLE_UPLOAD_FAILED;
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_UPLOAD_FAILED);
|
|
|
|
}
|
|
|
|
|
|
|
|
sshc->scp_session =
|
|
|
|
ssh_scp_new(sshc->ssh_session, SSH_SCP_WRITE, protop->path);
|
|
|
|
state(conn, SSH_SCP_UPLOAD_INIT);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
sshc->scp_session =
|
|
|
|
ssh_scp_new(sshc->ssh_session, SSH_SCP_READ, protop->path);
|
|
|
|
state(conn, SSH_SCP_DOWNLOAD_INIT);
|
|
|
|
}
|
|
|
|
|
|
|
|
if(!sshc->scp_session) {
|
|
|
|
err_msg = ssh_get_error(sshc->ssh_session);
|
|
|
|
failf(conn->data, "%s", err_msg);
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_UPLOAD_FAILED);
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SCP_UPLOAD_INIT:
|
|
|
|
|
|
|
|
rc = ssh_scp_init(sshc->scp_session);
|
|
|
|
if(rc != SSH_OK) {
|
|
|
|
err_msg = ssh_get_error(sshc->ssh_session);
|
|
|
|
failf(conn->data, "%s", err_msg);
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_UPLOAD_FAILED);
|
|
|
|
}
|
|
|
|
|
|
|
|
rc = ssh_scp_push_file(sshc->scp_session, protop->path,
|
|
|
|
data->state.infilesize,
|
|
|
|
(int)data->set.new_file_perms);
|
|
|
|
if(rc != SSH_OK) {
|
|
|
|
err_msg = ssh_get_error(sshc->ssh_session);
|
|
|
|
failf(conn->data, "%s", err_msg);
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_UPLOAD_FAILED);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* upload data */
|
2019-02-28 13:36:26 +03:00
|
|
|
Curl_setup_transfer(data, -1, data->req.size, FALSE, FIRSTSOCKET);
|
2017-10-23 14:49:23 +03:00
|
|
|
|
|
|
|
/* not set by Curl_setup_transfer to preserve keepon bits */
|
|
|
|
conn->sockfd = conn->writesockfd;
|
|
|
|
|
|
|
|
/* store this original bitmask setup to use later on if we can't
|
|
|
|
figure out a "real" bitmask */
|
|
|
|
sshc->orig_waitfor = data->req.keepon;
|
|
|
|
|
|
|
|
/* we want to use the _sending_ function even when the socket turns
|
|
|
|
out readable as the underlying libssh scp send function will deal
|
|
|
|
with both accordingly */
|
|
|
|
conn->cselect_bits = CURL_CSELECT_OUT;
|
|
|
|
|
|
|
|
state(conn, SSH_STOP);
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SCP_DOWNLOAD_INIT:
|
|
|
|
|
|
|
|
rc = ssh_scp_init(sshc->scp_session);
|
|
|
|
if(rc != SSH_OK) {
|
|
|
|
err_msg = ssh_get_error(sshc->ssh_session);
|
|
|
|
failf(conn->data, "%s", err_msg);
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_COULDNT_CONNECT);
|
|
|
|
}
|
|
|
|
state(conn, SSH_SCP_DOWNLOAD);
|
2018-08-31 01:10:10 +03:00
|
|
|
/* FALLTHROUGH */
|
2017-10-23 14:49:23 +03:00
|
|
|
|
|
|
|
case SSH_SCP_DOWNLOAD:{
|
|
|
|
curl_off_t bytecount;
|
|
|
|
|
|
|
|
rc = ssh_scp_pull_request(sshc->scp_session);
|
|
|
|
if(rc != SSH_SCP_REQUEST_NEWFILE) {
|
|
|
|
err_msg = ssh_get_error(sshc->ssh_session);
|
|
|
|
failf(conn->data, "%s", err_msg);
|
|
|
|
MOVE_TO_ERROR_STATE(CURLE_REMOTE_FILE_NOT_FOUND);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* download data */
|
|
|
|
bytecount = ssh_scp_request_get_size(sshc->scp_session);
|
|
|
|
data->req.maxdownload = (curl_off_t) bytecount;
|
2019-02-28 13:36:26 +03:00
|
|
|
Curl_setup_transfer(data, FIRSTSOCKET, bytecount, FALSE, -1);
|
2017-10-23 14:49:23 +03:00
|
|
|
|
|
|
|
/* not set by Curl_setup_transfer to preserve keepon bits */
|
|
|
|
conn->writesockfd = conn->sockfd;
|
|
|
|
|
|
|
|
/* we want to use the _receiving_ function even when the socket turns
|
|
|
|
out writableable as the underlying libssh recv function will deal
|
|
|
|
with both accordingly */
|
|
|
|
conn->cselect_bits = CURL_CSELECT_IN;
|
|
|
|
|
|
|
|
state(conn, SSH_STOP);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case SSH_SCP_DONE:
|
|
|
|
if(data->set.upload)
|
|
|
|
state(conn, SSH_SCP_SEND_EOF);
|
|
|
|
else
|
|
|
|
state(conn, SSH_SCP_CHANNEL_FREE);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SCP_SEND_EOF:
|
|
|
|
if(sshc->scp_session) {
|
|
|
|
rc = ssh_scp_close(sshc->scp_session);
|
|
|
|
if(rc == SSH_AGAIN) {
|
|
|
|
/* Currently the ssh_scp_close handles waiting for EOF in
|
|
|
|
* blocking way.
|
|
|
|
*/
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if(rc != SSH_OK) {
|
|
|
|
infof(data, "Failed to close libssh scp channel: %s\n",
|
|
|
|
ssh_get_error(sshc->ssh_session));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
state(conn, SSH_SCP_CHANNEL_FREE);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_SCP_CHANNEL_FREE:
|
|
|
|
if(sshc->scp_session) {
|
|
|
|
ssh_scp_free(sshc->scp_session);
|
|
|
|
sshc->scp_session = NULL;
|
|
|
|
}
|
|
|
|
DEBUGF(infof(data, "SCP DONE phase complete\n"));
|
|
|
|
|
|
|
|
ssh_set_blocking(sshc->ssh_session, 0);
|
|
|
|
|
|
|
|
state(conn, SSH_SESSION_DISCONNECT);
|
2018-08-31 01:10:10 +03:00
|
|
|
/* FALLTHROUGH */
|
2017-10-23 14:49:23 +03:00
|
|
|
|
|
|
|
case SSH_SESSION_DISCONNECT:
|
|
|
|
/* during weird times when we've been prematurely aborted, the channel
|
|
|
|
is still alive when we reach this state and we MUST kill the channel
|
|
|
|
properly first */
|
|
|
|
if(sshc->scp_session) {
|
|
|
|
ssh_scp_free(sshc->scp_session);
|
|
|
|
sshc->scp_session = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
ssh_disconnect(sshc->ssh_session);
|
|
|
|
|
2018-12-21 16:22:42 +03:00
|
|
|
SSH_STRING_FREE_CHAR(sshc->homedir);
|
2017-10-23 14:49:23 +03:00
|
|
|
conn->data->state.most_recent_ftp_entrypath = NULL;
|
|
|
|
|
|
|
|
state(conn, SSH_SESSION_FREE);
|
2018-08-31 01:10:10 +03:00
|
|
|
/* FALLTHROUGH */
|
2017-10-23 14:49:23 +03:00
|
|
|
case SSH_SESSION_FREE:
|
|
|
|
if(sshc->ssh_session) {
|
|
|
|
ssh_free(sshc->ssh_session);
|
|
|
|
sshc->ssh_session = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* worst-case scenario cleanup */
|
|
|
|
|
|
|
|
DEBUGASSERT(sshc->ssh_session == NULL);
|
|
|
|
DEBUGASSERT(sshc->scp_session == NULL);
|
|
|
|
|
2017-10-31 20:30:36 +03:00
|
|
|
if(sshc->readdir_tmp) {
|
|
|
|
ssh_string_free_char(sshc->readdir_tmp);
|
|
|
|
sshc->readdir_tmp = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(sshc->quote_attrs)
|
|
|
|
sftp_attributes_free(sshc->quote_attrs);
|
|
|
|
|
|
|
|
if(sshc->readdir_attrs)
|
|
|
|
sftp_attributes_free(sshc->readdir_attrs);
|
|
|
|
|
|
|
|
if(sshc->readdir_link_attrs)
|
|
|
|
sftp_attributes_free(sshc->readdir_link_attrs);
|
|
|
|
|
2017-10-23 14:49:23 +03:00
|
|
|
if(sshc->privkey)
|
|
|
|
ssh_key_free(sshc->privkey);
|
|
|
|
if(sshc->pubkey)
|
|
|
|
ssh_key_free(sshc->pubkey);
|
|
|
|
|
|
|
|
Curl_safefree(sshc->rsa_pub);
|
|
|
|
Curl_safefree(sshc->rsa);
|
|
|
|
Curl_safefree(sshc->quote_path1);
|
|
|
|
Curl_safefree(sshc->quote_path2);
|
|
|
|
Curl_safefree(sshc->readdir_line);
|
|
|
|
Curl_safefree(sshc->readdir_linkPath);
|
2018-12-21 16:22:42 +03:00
|
|
|
SSH_STRING_FREE_CHAR(sshc->homedir);
|
2017-10-23 14:49:23 +03:00
|
|
|
|
|
|
|
/* the code we are about to return */
|
|
|
|
result = sshc->actualcode;
|
|
|
|
|
|
|
|
memset(sshc, 0, sizeof(struct ssh_conn));
|
|
|
|
|
|
|
|
connclose(conn, "SSH session free");
|
|
|
|
sshc->state = SSH_SESSION_FREE; /* current */
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
state(conn, SSH_STOP);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SSH_QUIT:
|
|
|
|
/* fallthrough, just stop! */
|
|
|
|
default:
|
|
|
|
/* internal error */
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
state(conn, SSH_STOP);
|
|
|
|
break;
|
|
|
|
|
|
|
|
}
|
|
|
|
} while(!rc && (sshc->state != SSH_STOP));
|
|
|
|
|
|
|
|
|
|
|
|
if(rc == SSH_AGAIN) {
|
|
|
|
/* we would block, we need to wait for the socket to be ready (in the
|
|
|
|
right direction too)! */
|
|
|
|
*block = TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* called by the multi interface to figure out what socket(s) to wait for and
|
|
|
|
for what actions in the DO_DONE, PERFORM and WAITPERFORM states */
|
|
|
|
static int myssh_perform_getsock(const struct connectdata *conn,
|
|
|
|
curl_socket_t *sock, /* points to numsocks
|
|
|
|
number of sockets */
|
|
|
|
int numsocks)
|
|
|
|
{
|
|
|
|
int bitmap = GETSOCK_BLANK;
|
|
|
|
(void) numsocks;
|
|
|
|
|
|
|
|
sock[0] = conn->sock[FIRSTSOCKET];
|
|
|
|
|
|
|
|
if(conn->waitfor & KEEP_RECV)
|
|
|
|
bitmap |= GETSOCK_READSOCK(FIRSTSOCKET);
|
|
|
|
|
|
|
|
if(conn->waitfor & KEEP_SEND)
|
|
|
|
bitmap |= GETSOCK_WRITESOCK(FIRSTSOCKET);
|
|
|
|
|
|
|
|
return bitmap;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Generic function called by the multi interface to figure out what socket(s)
|
|
|
|
to wait for and for what actions during the DOING and PROTOCONNECT states*/
|
|
|
|
static int myssh_getsock(struct connectdata *conn,
|
|
|
|
curl_socket_t *sock, /* points to numsocks
|
|
|
|
number of sockets */
|
|
|
|
int numsocks)
|
|
|
|
{
|
|
|
|
/* if we know the direction we can use the generic *_getsock() function even
|
|
|
|
for the protocol_connect and doing states */
|
|
|
|
return myssh_perform_getsock(conn, sock, numsocks);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void myssh_block2waitfor(struct connectdata *conn, bool block)
|
|
|
|
{
|
|
|
|
struct ssh_conn *sshc = &conn->proto.sshc;
|
|
|
|
int dir;
|
|
|
|
|
|
|
|
/* If it didn't block, or nothing was returned by ssh_get_poll_flags
|
|
|
|
* have the original set */
|
|
|
|
conn->waitfor = sshc->orig_waitfor;
|
|
|
|
|
|
|
|
if(block) {
|
|
|
|
dir = ssh_get_poll_flags(sshc->ssh_session);
|
|
|
|
if(dir & SSH_READ_PENDING) {
|
2017-10-31 20:30:36 +03:00
|
|
|
/* translate the libssh define bits into our own bit defines */
|
2017-10-23 14:49:23 +03:00
|
|
|
conn->waitfor = KEEP_RECV;
|
|
|
|
}
|
|
|
|
else if(dir & SSH_WRITE_PENDING) {
|
|
|
|
conn->waitfor = KEEP_SEND;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* called repeatedly until done from multi.c */
|
|
|
|
static CURLcode myssh_multi_statemach(struct connectdata *conn,
|
|
|
|
bool *done)
|
|
|
|
{
|
|
|
|
struct ssh_conn *sshc = &conn->proto.sshc;
|
|
|
|
CURLcode result = CURLE_OK;
|
|
|
|
bool block; /* we store the status and use that to provide a ssh_getsock()
|
|
|
|
implementation */
|
|
|
|
|
|
|
|
result = myssh_statemach_act(conn, &block);
|
|
|
|
*done = (sshc->state == SSH_STOP) ? TRUE : FALSE;
|
|
|
|
myssh_block2waitfor(conn, block);
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
static CURLcode myssh_block_statemach(struct connectdata *conn,
|
|
|
|
bool disconnect)
|
|
|
|
{
|
|
|
|
struct ssh_conn *sshc = &conn->proto.sshc;
|
|
|
|
CURLcode result = CURLE_OK;
|
|
|
|
struct Curl_easy *data = conn->data;
|
|
|
|
|
|
|
|
while((sshc->state != SSH_STOP) && !result) {
|
|
|
|
bool block;
|
|
|
|
timediff_t left = 1000;
|
|
|
|
struct curltime now = Curl_now();
|
|
|
|
|
|
|
|
result = myssh_statemach_act(conn, &block);
|
|
|
|
if(result)
|
|
|
|
break;
|
|
|
|
|
|
|
|
if(!disconnect) {
|
|
|
|
if(Curl_pgrsUpdate(conn))
|
|
|
|
return CURLE_ABORTED_BY_CALLBACK;
|
|
|
|
|
|
|
|
result = Curl_speedcheck(data, now);
|
|
|
|
if(result)
|
|
|
|
break;
|
|
|
|
|
|
|
|
left = Curl_timeleft(data, NULL, FALSE);
|
|
|
|
if(left < 0) {
|
|
|
|
failf(data, "Operation timed out");
|
|
|
|
return CURLE_OPERATION_TIMEDOUT;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if(!result && block) {
|
|
|
|
curl_socket_t sock = conn->sock[FIRSTSOCKET];
|
|
|
|
curl_socket_t fd_read = CURL_SOCKET_BAD;
|
|
|
|
fd_read = sock;
|
|
|
|
/* wait for the socket to become ready */
|
|
|
|
(void) Curl_socket_check(fd_read, CURL_SOCKET_BAD,
|
|
|
|
CURL_SOCKET_BAD, left > 1000 ? 1000 : left);
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* SSH setup connection
|
|
|
|
*/
|
|
|
|
static CURLcode myssh_setup_connection(struct connectdata *conn)
|
|
|
|
{
|
|
|
|
struct SSHPROTO *ssh;
|
|
|
|
|
|
|
|
conn->data->req.protop = ssh = calloc(1, sizeof(struct SSHPROTO));
|
|
|
|
if(!ssh)
|
|
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
|
|
|
|
return CURLE_OK;
|
|
|
|
}
|
|
|
|
|
2017-10-31 20:30:36 +03:00
|
|
|
static Curl_recv scp_recv, sftp_recv;
|
|
|
|
static Curl_send scp_send, sftp_send;
|
2017-10-23 14:49:23 +03:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Curl_ssh_connect() gets called from Curl_protocol_connect() to allow us to
|
|
|
|
* do protocol-specific actions at connect-time.
|
|
|
|
*/
|
|
|
|
static CURLcode myssh_connect(struct connectdata *conn, bool *done)
|
|
|
|
{
|
|
|
|
struct ssh_conn *ssh;
|
|
|
|
CURLcode result;
|
2019-01-24 01:47:55 +03:00
|
|
|
curl_socket_t sock = conn->sock[FIRSTSOCKET];
|
2017-10-23 14:49:23 +03:00
|
|
|
struct Curl_easy *data = conn->data;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
/* initialize per-handle data if not already */
|
|
|
|
if(!data->req.protop)
|
|
|
|
myssh_setup_connection(conn);
|
|
|
|
|
|
|
|
/* We default to persistent connections. We set this already in this connect
|
|
|
|
function to make the re-use checks properly be able to check this bit. */
|
|
|
|
connkeep(conn, "SSH default");
|
|
|
|
|
|
|
|
if(conn->handler->protocol & CURLPROTO_SCP) {
|
|
|
|
conn->recv[FIRSTSOCKET] = scp_recv;
|
|
|
|
conn->send[FIRSTSOCKET] = scp_send;
|
|
|
|
}
|
2017-10-31 20:30:36 +03:00
|
|
|
else {
|
|
|
|
conn->recv[FIRSTSOCKET] = sftp_recv;
|
|
|
|
conn->send[FIRSTSOCKET] = sftp_send;
|
|
|
|
}
|
2017-10-23 14:49:23 +03:00
|
|
|
|
|
|
|
ssh = &conn->proto.sshc;
|
|
|
|
|
|
|
|
ssh->ssh_session = ssh_new();
|
|
|
|
if(ssh->ssh_session == NULL) {
|
|
|
|
failf(data, "Failure initialising ssh session");
|
|
|
|
return CURLE_FAILED_INIT;
|
|
|
|
}
|
|
|
|
|
2019-01-24 01:47:55 +03:00
|
|
|
ssh_options_set(ssh->ssh_session, SSH_OPTIONS_FD, &sock);
|
|
|
|
|
2017-10-23 14:49:23 +03:00
|
|
|
if(conn->user) {
|
|
|
|
infof(data, "User: %s\n", conn->user);
|
|
|
|
ssh_options_set(ssh->ssh_session, SSH_OPTIONS_USER, conn->user);
|
|
|
|
}
|
|
|
|
|
|
|
|
if(data->set.str[STRING_SSH_KNOWNHOSTS]) {
|
|
|
|
infof(data, "Known hosts: %s\n", data->set.str[STRING_SSH_KNOWNHOSTS]);
|
|
|
|
ssh_options_set(ssh->ssh_session, SSH_OPTIONS_KNOWNHOSTS,
|
|
|
|
data->set.str[STRING_SSH_KNOWNHOSTS]);
|
|
|
|
}
|
|
|
|
|
|
|
|
ssh_options_set(ssh->ssh_session, SSH_OPTIONS_HOST, conn->host.name);
|
|
|
|
if(conn->remote_port)
|
|
|
|
ssh_options_set(ssh->ssh_session, SSH_OPTIONS_PORT,
|
|
|
|
&conn->remote_port);
|
|
|
|
|
|
|
|
if(data->set.ssh_compression) {
|
|
|
|
ssh_options_set(ssh->ssh_session, SSH_OPTIONS_COMPRESSION,
|
|
|
|
"zlib,zlib@openssh.com,none");
|
|
|
|
}
|
|
|
|
|
|
|
|
ssh->privkey = NULL;
|
|
|
|
ssh->pubkey = NULL;
|
|
|
|
|
|
|
|
if(data->set.str[STRING_SSH_PUBLIC_KEY]) {
|
|
|
|
rc = ssh_pki_import_pubkey_file(data->set.str[STRING_SSH_PUBLIC_KEY],
|
|
|
|
&ssh->pubkey);
|
|
|
|
if(rc != SSH_OK) {
|
|
|
|
failf(data, "Could not load public key file");
|
|
|
|
/* ignore */
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* we do not verify here, we do it at the state machine,
|
|
|
|
* after connection */
|
|
|
|
|
|
|
|
state(conn, SSH_INIT);
|
|
|
|
|
|
|
|
result = myssh_multi_statemach(conn, done);
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* called from multi.c while DOing */
|
|
|
|
static CURLcode scp_doing(struct connectdata *conn, bool *dophase_done)
|
|
|
|
{
|
|
|
|
CURLcode result;
|
|
|
|
|
|
|
|
result = myssh_multi_statemach(conn, dophase_done);
|
|
|
|
|
|
|
|
if(*dophase_done) {
|
|
|
|
DEBUGF(infof(conn->data, "DO phase is complete\n"));
|
|
|
|
}
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
***********************************************************************
|
|
|
|
*
|
|
|
|
* scp_perform()
|
|
|
|
*
|
|
|
|
* This is the actual DO function for SCP. Get a file according to
|
|
|
|
* the options previously setup.
|
|
|
|
*/
|
|
|
|
|
|
|
|
static
|
|
|
|
CURLcode scp_perform(struct connectdata *conn,
|
|
|
|
bool *connected, bool *dophase_done)
|
|
|
|
{
|
|
|
|
CURLcode result = CURLE_OK;
|
|
|
|
|
|
|
|
DEBUGF(infof(conn->data, "DO phase starts\n"));
|
|
|
|
|
|
|
|
*dophase_done = FALSE; /* not done yet */
|
|
|
|
|
|
|
|
/* start the first command in the DO phase */
|
|
|
|
state(conn, SSH_SCP_TRANS_INIT);
|
|
|
|
|
|
|
|
result = myssh_multi_statemach(conn, dophase_done);
|
|
|
|
|
|
|
|
*connected = conn->bits.tcpconnect[FIRSTSOCKET];
|
|
|
|
|
|
|
|
if(*dophase_done) {
|
|
|
|
DEBUGF(infof(conn->data, "DO phase is complete\n"));
|
|
|
|
}
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
static CURLcode myssh_do_it(struct connectdata *conn, bool *done)
|
|
|
|
{
|
|
|
|
CURLcode result;
|
|
|
|
bool connected = 0;
|
|
|
|
struct Curl_easy *data = conn->data;
|
|
|
|
struct ssh_conn *sshc = &conn->proto.sshc;
|
|
|
|
|
|
|
|
*done = FALSE; /* default to false */
|
|
|
|
|
|
|
|
data->req.size = -1; /* make sure this is unknown at this point */
|
|
|
|
|
|
|
|
sshc->actualcode = CURLE_OK; /* reset error code */
|
|
|
|
sshc->secondCreateDirs = 0; /* reset the create dir attempt state
|
|
|
|
variable */
|
|
|
|
|
|
|
|
Curl_pgrsSetUploadCounter(data, 0);
|
|
|
|
Curl_pgrsSetDownloadCounter(data, 0);
|
|
|
|
Curl_pgrsSetUploadSize(data, -1);
|
|
|
|
Curl_pgrsSetDownloadSize(data, -1);
|
|
|
|
|
|
|
|
if(conn->handler->protocol & CURLPROTO_SCP)
|
|
|
|
result = scp_perform(conn, &connected, done);
|
|
|
|
else
|
2017-10-31 20:30:36 +03:00
|
|
|
result = sftp_perform(conn, &connected, done);
|
2017-10-23 14:49:23 +03:00
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* BLOCKING, but the function is using the state machine so the only reason
|
|
|
|
this is still blocking is that the multi interface code has no support for
|
|
|
|
disconnecting operations that takes a while */
|
|
|
|
static CURLcode scp_disconnect(struct connectdata *conn,
|
|
|
|
bool dead_connection)
|
|
|
|
{
|
|
|
|
CURLcode result = CURLE_OK;
|
|
|
|
struct ssh_conn *ssh = &conn->proto.sshc;
|
|
|
|
(void) dead_connection;
|
|
|
|
|
|
|
|
if(ssh->ssh_session) {
|
|
|
|
/* only if there's a session still around to use! */
|
|
|
|
|
|
|
|
state(conn, SSH_SESSION_DISCONNECT);
|
|
|
|
|
|
|
|
result = myssh_block_statemach(conn, TRUE);
|
|
|
|
}
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* generic done function for both SCP and SFTP called from their specific
|
|
|
|
done functions */
|
|
|
|
static CURLcode myssh_done(struct connectdata *conn, CURLcode status)
|
|
|
|
{
|
|
|
|
CURLcode result = CURLE_OK;
|
|
|
|
struct SSHPROTO *protop = conn->data->req.protop;
|
|
|
|
|
|
|
|
if(!status) {
|
|
|
|
/* run the state-machine
|
|
|
|
|
|
|
|
TODO: when the multi interface is used, this _really_ should be using
|
|
|
|
the ssh_multi_statemach function but we have no general support for
|
|
|
|
non-blocking DONE operations!
|
|
|
|
*/
|
|
|
|
result = myssh_block_statemach(conn, FALSE);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
result = status;
|
|
|
|
|
|
|
|
if(protop)
|
|
|
|
Curl_safefree(protop->path);
|
|
|
|
if(Curl_pgrsDone(conn))
|
|
|
|
return CURLE_ABORTED_BY_CALLBACK;
|
|
|
|
|
|
|
|
conn->data->req.keepon = 0; /* clear all bits */
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static CURLcode scp_done(struct connectdata *conn, CURLcode status,
|
|
|
|
bool premature)
|
|
|
|
{
|
|
|
|
(void) premature; /* not used */
|
|
|
|
|
|
|
|
if(!status)
|
|
|
|
state(conn, SSH_SCP_DONE);
|
|
|
|
|
|
|
|
return myssh_done(conn, status);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t scp_send(struct connectdata *conn, int sockindex,
|
|
|
|
const void *mem, size_t len, CURLcode *err)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
(void) sockindex; /* we only support SCP on the fixed known primary socket */
|
|
|
|
(void) err;
|
|
|
|
|
|
|
|
rc = ssh_scp_write(conn->proto.sshc.scp_session, mem, len);
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
/* The following code is misleading, mostly added as wishful thinking
|
|
|
|
* that libssh at some point will implement non-blocking ssh_scp_write/read.
|
|
|
|
* Currently rc can only be number of bytes read or SSH_ERROR. */
|
|
|
|
myssh_block2waitfor(conn, (rc == SSH_AGAIN) ? TRUE : FALSE);
|
|
|
|
|
|
|
|
if(rc == SSH_AGAIN) {
|
|
|
|
*err = CURLE_AGAIN;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
#endif
|
|
|
|
if(rc != SSH_OK) {
|
|
|
|
*err = CURLE_SSH;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t scp_recv(struct connectdata *conn, int sockindex,
|
|
|
|
char *mem, size_t len, CURLcode *err)
|
|
|
|
{
|
|
|
|
ssize_t nread;
|
|
|
|
(void) err;
|
|
|
|
(void) sockindex; /* we only support SCP on the fixed known primary socket */
|
|
|
|
|
|
|
|
/* libssh returns int */
|
|
|
|
nread = ssh_scp_read(conn->proto.sshc.scp_session, mem, len);
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
/* The following code is misleading, mostly added as wishful thinking
|
|
|
|
* that libssh at some point will implement non-blocking ssh_scp_write/read.
|
|
|
|
* Currently rc can only be SSH_OK or SSH_ERROR. */
|
|
|
|
|
|
|
|
myssh_block2waitfor(conn, (nread == SSH_AGAIN) ? TRUE : FALSE);
|
|
|
|
if(nread == SSH_AGAIN) {
|
|
|
|
*err = CURLE_AGAIN;
|
|
|
|
nread = -1;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
return nread;
|
|
|
|
}
|
|
|
|
|
2017-10-31 20:30:36 +03:00
|
|
|
/*
|
|
|
|
* =============== SFTP ===============
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
***********************************************************************
|
|
|
|
*
|
|
|
|
* sftp_perform()
|
|
|
|
*
|
|
|
|
* This is the actual DO function for SFTP. Get a file/directory according to
|
|
|
|
* the options previously setup.
|
|
|
|
*/
|
|
|
|
|
|
|
|
static
|
|
|
|
CURLcode sftp_perform(struct connectdata *conn,
|
|
|
|
bool *connected,
|
|
|
|
bool *dophase_done)
|
|
|
|
{
|
|
|
|
CURLcode result = CURLE_OK;
|
|
|
|
|
|
|
|
DEBUGF(infof(conn->data, "DO phase starts\n"));
|
|
|
|
|
|
|
|
*dophase_done = FALSE; /* not done yet */
|
|
|
|
|
|
|
|
/* start the first command in the DO phase */
|
|
|
|
state(conn, SSH_SFTP_QUOTE_INIT);
|
|
|
|
|
|
|
|
/* run the state-machine */
|
|
|
|
result = myssh_multi_statemach(conn, dophase_done);
|
|
|
|
|
|
|
|
*connected = conn->bits.tcpconnect[FIRSTSOCKET];
|
|
|
|
|
|
|
|
if(*dophase_done) {
|
|
|
|
DEBUGF(infof(conn->data, "DO phase is complete\n"));
|
|
|
|
}
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* called from multi.c while DOing */
|
|
|
|
static CURLcode sftp_doing(struct connectdata *conn,
|
|
|
|
bool *dophase_done)
|
|
|
|
{
|
|
|
|
CURLcode result = myssh_multi_statemach(conn, dophase_done);
|
|
|
|
if(*dophase_done) {
|
|
|
|
DEBUGF(infof(conn->data, "DO phase is complete\n"));
|
|
|
|
}
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* BLOCKING, but the function is using the state machine so the only reason
|
|
|
|
this is still blocking is that the multi interface code has no support for
|
|
|
|
disconnecting operations that takes a while */
|
|
|
|
static CURLcode sftp_disconnect(struct connectdata *conn, bool dead_connection)
|
|
|
|
{
|
|
|
|
CURLcode result = CURLE_OK;
|
|
|
|
(void) dead_connection;
|
|
|
|
|
|
|
|
DEBUGF(infof(conn->data, "SSH DISCONNECT starts now\n"));
|
|
|
|
|
|
|
|
if(conn->proto.sshc.ssh_session) {
|
|
|
|
/* only if there's a session still around to use! */
|
|
|
|
state(conn, SSH_SFTP_SHUTDOWN);
|
|
|
|
result = myssh_block_statemach(conn, TRUE);
|
|
|
|
}
|
|
|
|
|
|
|
|
DEBUGF(infof(conn->data, "SSH DISCONNECT is done\n"));
|
|
|
|
|
|
|
|
return result;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
static CURLcode sftp_done(struct connectdata *conn, CURLcode status,
|
|
|
|
bool premature)
|
|
|
|
{
|
|
|
|
struct ssh_conn *sshc = &conn->proto.sshc;
|
|
|
|
|
|
|
|
if(!status) {
|
|
|
|
/* Post quote commands are executed after the SFTP_CLOSE state to avoid
|
|
|
|
errors that could happen due to open file handles during POSTQUOTE
|
|
|
|
operation */
|
2019-02-28 17:35:58 +03:00
|
|
|
if(!premature && conn->data->set.postquote && !conn->bits.retry)
|
2018-09-04 17:44:47 +03:00
|
|
|
sshc->nextstate = SSH_SFTP_POSTQUOTE_INIT;
|
2019-02-28 17:35:58 +03:00
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
2017-10-31 20:30:36 +03:00
|
|
|
}
|
|
|
|
return myssh_done(conn, status);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* return number of sent bytes */
|
|
|
|
static ssize_t sftp_send(struct connectdata *conn, int sockindex,
|
|
|
|
const void *mem, size_t len, CURLcode *err)
|
|
|
|
{
|
|
|
|
ssize_t nwrite;
|
|
|
|
(void)sockindex;
|
|
|
|
|
|
|
|
nwrite = sftp_write(conn->proto.sshc.sftp_file, mem, len);
|
|
|
|
|
|
|
|
myssh_block2waitfor(conn, FALSE);
|
|
|
|
|
|
|
|
#if 0 /* not returned by libssh on write */
|
|
|
|
if(nwrite == SSH_AGAIN) {
|
|
|
|
*err = CURLE_AGAIN;
|
|
|
|
nwrite = 0;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
#endif
|
|
|
|
if(nwrite < 0) {
|
|
|
|
*err = CURLE_SSH;
|
|
|
|
nwrite = -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return nwrite;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Return number of received (decrypted) bytes
|
|
|
|
* or <0 on error
|
|
|
|
*/
|
|
|
|
static ssize_t sftp_recv(struct connectdata *conn, int sockindex,
|
|
|
|
char *mem, size_t len, CURLcode *err)
|
|
|
|
{
|
|
|
|
ssize_t nread;
|
|
|
|
(void)sockindex;
|
|
|
|
|
2018-05-03 23:16:57 +03:00
|
|
|
DEBUGASSERT(len < CURL_MAX_READ_SIZE);
|
2017-10-31 20:30:36 +03:00
|
|
|
|
|
|
|
switch(conn->proto.sshc.sftp_recv_state) {
|
|
|
|
case 0:
|
|
|
|
conn->proto.sshc.sftp_file_index =
|
|
|
|
sftp_async_read_begin(conn->proto.sshc.sftp_file,
|
|
|
|
(uint32_t)len);
|
|
|
|
if(conn->proto.sshc.sftp_file_index < 0) {
|
|
|
|
*err = CURLE_RECV_ERROR;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2018-08-31 01:10:10 +03:00
|
|
|
/* FALLTHROUGH */
|
2017-10-31 20:30:36 +03:00
|
|
|
case 1:
|
|
|
|
conn->proto.sshc.sftp_recv_state = 1;
|
|
|
|
|
|
|
|
nread = sftp_async_read(conn->proto.sshc.sftp_file,
|
|
|
|
mem, (uint32_t)len,
|
|
|
|
conn->proto.sshc.sftp_file_index);
|
|
|
|
|
|
|
|
myssh_block2waitfor(conn, (nread == SSH_AGAIN)?TRUE:FALSE);
|
|
|
|
|
|
|
|
if(nread == SSH_AGAIN) {
|
|
|
|
*err = CURLE_AGAIN;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
else if(nread < 0) {
|
|
|
|
*err = CURLE_RECV_ERROR;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
conn->proto.sshc.sftp_recv_state = 0;
|
|
|
|
return nread;
|
|
|
|
|
|
|
|
default:
|
|
|
|
/* we never reach here */
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void sftp_quote(struct connectdata *conn)
|
|
|
|
{
|
|
|
|
const char *cp;
|
|
|
|
struct Curl_easy *data = conn->data;
|
|
|
|
struct SSHPROTO *protop = data->req.protop;
|
|
|
|
struct ssh_conn *sshc = &conn->proto.sshc;
|
|
|
|
CURLcode result;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Support some of the "FTP" commands
|
|
|
|
*/
|
|
|
|
char *cmd = sshc->quote_item->data;
|
|
|
|
sshc->acceptfail = FALSE;
|
|
|
|
|
|
|
|
/* if a command starts with an asterisk, which a legal SFTP command never
|
|
|
|
can, the command will be allowed to fail without it causing any
|
|
|
|
aborts or cancels etc. It will cause libcurl to act as if the command
|
|
|
|
is successful, whatever the server reponds. */
|
|
|
|
|
|
|
|
if(cmd[0] == '*') {
|
|
|
|
cmd++;
|
|
|
|
sshc->acceptfail = TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(strcasecompare("pwd", cmd)) {
|
|
|
|
/* output debug output if that is requested */
|
|
|
|
char *tmp = aprintf("257 \"%s\" is current directory.\n",
|
|
|
|
protop->path);
|
|
|
|
if(!tmp) {
|
|
|
|
sshc->actualcode = CURLE_OUT_OF_MEMORY;
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if(data->set.verbose) {
|
2018-06-12 01:10:43 +03:00
|
|
|
Curl_debug(data, CURLINFO_HEADER_OUT, (char *) "PWD\n", 4);
|
|
|
|
Curl_debug(data, CURLINFO_HEADER_IN, tmp, strlen(tmp));
|
2017-10-31 20:30:36 +03:00
|
|
|
}
|
|
|
|
/* this sends an FTP-like "header" to the header callback so that the
|
|
|
|
current directory can be read very similar to how it is read when
|
|
|
|
using ordinary FTP. */
|
|
|
|
result = Curl_client_write(conn, CLIENTWRITE_HEADER, tmp, strlen(tmp));
|
|
|
|
free(tmp);
|
|
|
|
if(result) {
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = result;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
state(conn, SSH_SFTP_NEXT_QUOTE);
|
|
|
|
return;
|
|
|
|
}
|
2017-12-05 11:14:04 +03:00
|
|
|
|
|
|
|
/*
|
|
|
|
* the arguments following the command must be separated from the
|
|
|
|
* command with a space so we can check for it unconditionally
|
|
|
|
*/
|
|
|
|
cp = strchr(cmd, ' ');
|
|
|
|
if(cp == NULL) {
|
|
|
|
failf(data, "Syntax error in SFTP command. Supply parameter(s)!");
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = CURLE_QUOTE_ERROR;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* also, every command takes at least one argument so we get that
|
|
|
|
* first argument right now
|
|
|
|
*/
|
2017-12-08 19:31:01 +03:00
|
|
|
result = Curl_get_pathname(&cp, &sshc->quote_path1, sshc->homedir);
|
2017-12-05 11:14:04 +03:00
|
|
|
if(result) {
|
|
|
|
if(result == CURLE_OUT_OF_MEMORY)
|
|
|
|
failf(data, "Out of memory");
|
|
|
|
else
|
|
|
|
failf(data, "Syntax error: Bad first parameter");
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = result;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* SFTP is a binary protocol, so we don't send text commands
|
|
|
|
* to the server. Instead, we scan for commands used by
|
|
|
|
* OpenSSH's sftp program and call the appropriate libssh
|
|
|
|
* functions.
|
|
|
|
*/
|
|
|
|
if(strncasecompare(cmd, "chgrp ", 6) ||
|
|
|
|
strncasecompare(cmd, "chmod ", 6) ||
|
|
|
|
strncasecompare(cmd, "chown ", 6)) {
|
|
|
|
/* attribute change */
|
|
|
|
|
|
|
|
/* sshc->quote_path1 contains the mode to set */
|
|
|
|
/* get the destination */
|
2017-12-08 19:31:01 +03:00
|
|
|
result = Curl_get_pathname(&cp, &sshc->quote_path2, sshc->homedir);
|
2017-12-05 11:14:04 +03:00
|
|
|
if(result) {
|
|
|
|
if(result == CURLE_OUT_OF_MEMORY)
|
|
|
|
failf(data, "Out of memory");
|
|
|
|
else
|
|
|
|
failf(data, "Syntax error in chgrp/chmod/chown: "
|
|
|
|
"Bad second parameter");
|
|
|
|
Curl_safefree(sshc->quote_path1);
|
2017-10-31 20:30:36 +03:00
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
2017-12-05 11:14:04 +03:00
|
|
|
sshc->actualcode = result;
|
2017-10-31 20:30:36 +03:00
|
|
|
return;
|
|
|
|
}
|
2017-12-05 11:14:04 +03:00
|
|
|
sshc->quote_attrs = NULL;
|
|
|
|
state(conn, SSH_SFTP_QUOTE_STAT);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if(strncasecompare(cmd, "ln ", 3) ||
|
|
|
|
strncasecompare(cmd, "symlink ", 8)) {
|
|
|
|
/* symbolic linking */
|
|
|
|
/* sshc->quote_path1 is the source */
|
|
|
|
/* get the destination */
|
2017-12-08 19:31:01 +03:00
|
|
|
result = Curl_get_pathname(&cp, &sshc->quote_path2, sshc->homedir);
|
2017-10-31 20:30:36 +03:00
|
|
|
if(result) {
|
|
|
|
if(result == CURLE_OUT_OF_MEMORY)
|
|
|
|
failf(data, "Out of memory");
|
|
|
|
else
|
2017-12-05 11:14:04 +03:00
|
|
|
failf(data, "Syntax error in ln/symlink: Bad second parameter");
|
|
|
|
Curl_safefree(sshc->quote_path1);
|
2017-10-31 20:30:36 +03:00
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = result;
|
|
|
|
return;
|
|
|
|
}
|
2017-12-05 11:14:04 +03:00
|
|
|
state(conn, SSH_SFTP_QUOTE_SYMLINK);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
else if(strncasecompare(cmd, "mkdir ", 6)) {
|
|
|
|
/* create dir */
|
|
|
|
state(conn, SSH_SFTP_QUOTE_MKDIR);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
else if(strncasecompare(cmd, "rename ", 7)) {
|
|
|
|
/* rename file */
|
|
|
|
/* first param is the source path */
|
|
|
|
/* second param is the dest. path */
|
2017-12-08 19:31:01 +03:00
|
|
|
result = Curl_get_pathname(&cp, &sshc->quote_path2, sshc->homedir);
|
2017-12-05 11:14:04 +03:00
|
|
|
if(result) {
|
|
|
|
if(result == CURLE_OUT_OF_MEMORY)
|
|
|
|
failf(data, "Out of memory");
|
|
|
|
else
|
|
|
|
failf(data, "Syntax error in rename: Bad second parameter");
|
|
|
|
Curl_safefree(sshc->quote_path1);
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = result;
|
2017-10-31 20:30:36 +03:00
|
|
|
return;
|
|
|
|
}
|
2017-12-05 11:14:04 +03:00
|
|
|
state(conn, SSH_SFTP_QUOTE_RENAME);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
else if(strncasecompare(cmd, "rmdir ", 6)) {
|
|
|
|
/* delete dir */
|
|
|
|
state(conn, SSH_SFTP_QUOTE_RMDIR);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
else if(strncasecompare(cmd, "rm ", 3)) {
|
|
|
|
state(conn, SSH_SFTP_QUOTE_UNLINK);
|
|
|
|
return;
|
|
|
|
}
|
2017-10-31 20:30:36 +03:00
|
|
|
#ifdef HAS_STATVFS_SUPPORT
|
2017-12-05 11:14:04 +03:00
|
|
|
else if(strncasecompare(cmd, "statvfs ", 8)) {
|
|
|
|
state(conn, SSH_SFTP_QUOTE_STATVFS);
|
2017-10-31 20:30:36 +03:00
|
|
|
return;
|
|
|
|
}
|
2017-12-05 11:14:04 +03:00
|
|
|
#endif
|
2017-10-31 20:30:36 +03:00
|
|
|
|
2017-12-05 11:14:04 +03:00
|
|
|
failf(data, "Unknown SFTP command");
|
|
|
|
Curl_safefree(sshc->quote_path1);
|
|
|
|
Curl_safefree(sshc->quote_path2);
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = CURLE_QUOTE_ERROR;
|
2017-10-31 20:30:36 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
static void sftp_quote_stat(struct connectdata *conn)
|
|
|
|
{
|
|
|
|
struct Curl_easy *data = conn->data;
|
|
|
|
struct ssh_conn *sshc = &conn->proto.sshc;
|
|
|
|
char *cmd = sshc->quote_item->data;
|
|
|
|
sshc->acceptfail = FALSE;
|
|
|
|
|
|
|
|
/* if a command starts with an asterisk, which a legal SFTP command never
|
|
|
|
can, the command will be allowed to fail without it causing any
|
|
|
|
aborts or cancels etc. It will cause libcurl to act as if the command
|
|
|
|
is successful, whatever the server reponds. */
|
|
|
|
|
|
|
|
if(cmd[0] == '*') {
|
|
|
|
cmd++;
|
|
|
|
sshc->acceptfail = TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* We read the file attributes, store them in sshc->quote_attrs
|
|
|
|
* and modify them accordingly to command. Then we switch to
|
|
|
|
* QUOTE_SETSTAT state to write new ones.
|
|
|
|
*/
|
|
|
|
|
|
|
|
if(sshc->quote_attrs)
|
|
|
|
sftp_attributes_free(sshc->quote_attrs);
|
|
|
|
sshc->quote_attrs = sftp_stat(sshc->sftp_session, sshc->quote_path2);
|
|
|
|
if(sshc->quote_attrs == NULL) {
|
|
|
|
Curl_safefree(sshc->quote_path1);
|
|
|
|
Curl_safefree(sshc->quote_path2);
|
|
|
|
failf(data, "Attempt to get SFTP stats failed: %d",
|
|
|
|
sftp_get_error(sshc->sftp_session));
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = CURLE_QUOTE_ERROR;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Now set the new attributes... */
|
|
|
|
if(strncasecompare(cmd, "chgrp", 5)) {
|
|
|
|
sshc->quote_attrs->gid = (uint32_t)strtoul(sshc->quote_path1, NULL, 10);
|
|
|
|
if(sshc->quote_attrs->gid == 0 && !ISDIGIT(sshc->quote_path1[0]) &&
|
|
|
|
!sshc->acceptfail) {
|
|
|
|
Curl_safefree(sshc->quote_path1);
|
|
|
|
Curl_safefree(sshc->quote_path2);
|
|
|
|
failf(data, "Syntax error: chgrp gid not a number");
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = CURLE_QUOTE_ERROR;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
sshc->quote_attrs->flags |= SSH_FILEXFER_ATTR_UIDGID;
|
|
|
|
}
|
|
|
|
else if(strncasecompare(cmd, "chmod", 5)) {
|
|
|
|
mode_t perms;
|
|
|
|
perms = (mode_t)strtoul(sshc->quote_path1, NULL, 8);
|
|
|
|
/* permissions are octal */
|
|
|
|
if(perms == 0 && !ISDIGIT(sshc->quote_path1[0])) {
|
|
|
|
Curl_safefree(sshc->quote_path1);
|
|
|
|
Curl_safefree(sshc->quote_path2);
|
|
|
|
failf(data, "Syntax error: chmod permissions not a number");
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = CURLE_QUOTE_ERROR;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
sshc->quote_attrs->permissions = perms;
|
|
|
|
sshc->quote_attrs->flags |= SSH_FILEXFER_ATTR_PERMISSIONS;
|
|
|
|
}
|
|
|
|
else if(strncasecompare(cmd, "chown", 5)) {
|
|
|
|
sshc->quote_attrs->uid = (uint32_t)strtoul(sshc->quote_path1, NULL, 10);
|
|
|
|
if(sshc->quote_attrs->uid == 0 && !ISDIGIT(sshc->quote_path1[0]) &&
|
|
|
|
!sshc->acceptfail) {
|
|
|
|
Curl_safefree(sshc->quote_path1);
|
|
|
|
Curl_safefree(sshc->quote_path2);
|
|
|
|
failf(data, "Syntax error: chown uid not a number");
|
|
|
|
state(conn, SSH_SFTP_CLOSE);
|
|
|
|
sshc->nextstate = SSH_NO_STATE;
|
|
|
|
sshc->actualcode = CURLE_QUOTE_ERROR;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
sshc->quote_attrs->flags |= SSH_FILEXFER_ATTR_UIDGID;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Now send the completed structure... */
|
|
|
|
state(conn, SSH_SFTP_QUOTE_SETSTAT);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2017-10-23 14:49:23 +03:00
|
|
|
#endif /* USE_LIBSSH */
|