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|
/* packet-sftp.c
* Routines for ssh packet dissection
*
* Jérôme Hamm
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* Copied from packet-ssh.c
*
* SPDX-License-Identifier: GPL-2.0-or-later
*
*
* Note: support for SFTP.
*
*/
/* SFTP is defined in:
*
* draft-ietf-secsh-filexfer-02 - SSH File Transfer Protocol
*
*/
#include "config.h"
/* Start with WIRESHARK_LOG_DOMAINS=sftp and WIRESHARK_LOG_LEVEL=debug to see messages. */
#define WS_LOG_DOMAIN "sftp"
#include <epan/packet.h>
#include <epan/expert.h>
void proto_register_sftp(void);
static int proto_sftp = -1;
static int hf_ssh_sftp_len = -1;
static int hf_ssh_sftp_type = -1;
static int hf_ssh_sftp_version = -1;
static int hf_ssh_sftp_id = -1;
static int hf_ssh_sftp_path_len = -1;
static int hf_ssh_sftp_path = -1;
static int hf_ssh_sftp_pflags = -1;
static int hf_ssh_sftp_name_count = -1;
static int hf_ssh_sftp_name_fn_len = -1;
static int hf_ssh_sftp_name_fn = -1;
static int hf_ssh_sftp_name_ln_len = -1;
static int hf_ssh_sftp_name_ln = -1;
static int hf_ssh_sftp_attrs_flags = -1;
static int hf_ssh_sftp_attrs_size = -1;
static int hf_ssh_sftp_attrs_uid = -1;
static int hf_ssh_sftp_attrs_gid = -1;
static int hf_ssh_sftp_attrs_permissions = -1;
static int hf_ssh_sftp_attrs_atime = -1;
static int hf_ssh_sftp_attrs_mtime = -1;
static int hf_ssh_sftp_attrs_extended_count = -1;
static int hf_ssh_sftp_handle_len = -1;
static int hf_ssh_sftp_handle = -1;
static int hf_ssh_sftp_status = -1;
static int hf_ssh_sftp_error_message_len = -1;
static int hf_ssh_sftp_error_message = -1;
static int hf_ssh_sftp_offset = -1;
static int hf_ssh_sftp_length = -1;
static int hf_ssh_sftp_data_len = -1;
static int hf_ssh_sftp_data = -1;
static int hf_ssh_lang_tag_length = -1;
static int hf_ssh_lang_tag = -1;
static gint ett_sftp = -1;
static gint ett_sftp_attrs = -1;
static dissector_handle_t sftp_handle;
#define SSH_FXP_INIT 1
#define SSH_FXP_VERSION 2
#define SSH_FXP_OPEN 3
#define SSH_FXP_CLOSE 4
#define SSH_FXP_READ 5
#define SSH_FXP_WRITE 6
#define SSH_FXP_LSTAT 7
#define SSH_FXP_FSTAT 8
#define SSH_FXP_SETSTAT 9
#define SSH_FXP_FSETSTAT 10
#define SSH_FXP_OPENDIR 11
#define SSH_FXP_READDIR 12
#define SSH_FXP_REMOVE 13
#define SSH_FXP_MKDIR 14
#define SSH_FXP_RMDIR 15
#define SSH_FXP_REALPATH 16
#define SSH_FXP_STAT 17
#define SSH_FXP_RENAME 18
#define SSH_FXP_READLINK 19
#define SSH_FXP_LINK 21
#define SSH_FXP_BLOCK 22
#define SSH_FXP_UNBLOCK 23
#define SSH_FXP_STATUS 101
#define SSH_FXP_HANDLE 102
#define SSH_FXP_DATA 103
#define SSH_FXP_NAME 104
#define SSH_FXP_ATTRS 105
#define SSH_FXP_EXTENDED 200
#define SSH_FXP_EXTENDED_REPLY 201
#define SSH_FILEXFER_ATTR_SIZE 0x00000001
#define SSH_FILEXFER_ATTR_UIDGID 0x00000002
#define SSH_FILEXFER_ATTR_PERMISSIONS 0x00000004
#define SSH_FILEXFER_ATTR_ACMODTIME 0x00000008
#define SSH_FILEXFER_ATTR_EXTENDED 0x80000000
static const value_string ssh2_sftp_vals[] = {
{SSH_FXP_INIT, "SSH_FXP_INIT"},
{SSH_FXP_VERSION, "SSH_FXP_VERSION"},
{SSH_FXP_OPEN, "SSH_FXP_OPEN"},
{SSH_FXP_CLOSE, "SSH_FXP_CLOSE"},
{SSH_FXP_READ, "SSH_FXP_READ"},
{SSH_FXP_WRITE, "SSH_FXP_WRITE"},
{SSH_FXP_LSTAT, "SSH_FXP_LSTAT"},
{SSH_FXP_FSTAT, "SSH_FXP_FSTAT"},
{SSH_FXP_SETSTAT, "SSH_FXP_SETSTAT"},
{SSH_FXP_FSETSTAT, "SSH_FXP_FSETSTAT"},
{SSH_FXP_OPENDIR, "SSH_FXP_OPENDIR"},
{SSH_FXP_READDIR, "SSH_FXP_READDIR"},
{SSH_FXP_REMOVE, "SSH_FXP_REMOVE"},
{SSH_FXP_MKDIR, "SSH_FXP_MKDIR"},
{SSH_FXP_RMDIR, "SSH_FXP_RMDIR"},
{SSH_FXP_REALPATH, "SSH_FXP_REALPATH"},
{SSH_FXP_STAT, "SSH_FXP_STAT"},
{SSH_FXP_RENAME, "SSH_FXP_RENAME"},
{SSH_FXP_READLINK, "SSH_FXP_READLINK"},
{SSH_FXP_LINK, "SSH_FXP_LINK"},
{SSH_FXP_BLOCK, "SSH_FXP_BLOCK"},
{SSH_FXP_UNBLOCK, "SSH_FXP_UNBLOCK"},
{SSH_FXP_STATUS, "SSH_FXP_STATUS"},
{SSH_FXP_HANDLE, "SSH_FXP_HANDLE"},
{SSH_FXP_DATA, "SSH_FXP_DATA"},
{SSH_FXP_NAME, "SSH_FXP_NAME"},
{SSH_FXP_ATTRS, "SSH_FXP_ATTRS"},
{SSH_FXP_EXTENDED, "SSH_FXP_EXTENDED"},
{SSH_FXP_EXTENDED_REPLY, "SSH_FXP_EXTENDED_REPLY"},
{0, NULL}
};
static int dissect_sftp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_);
static int dissect_sftp_attrs(tvbuff_t *packet_tvb, packet_info *pinfo,
int offset, proto_item *msg_type_tree);
//static int dissect_sftp(tvbuff_t *packet_tvb, packet_info *pinfo,
// int offset, proto_item *msg_type_tree)
static int dissect_sftp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
int offset = 0;
guint plen;
guint slen;
plen = tvb_get_ntohl(tvb, offset) ;
wmem_strbuf_t *title = wmem_strbuf_new(wmem_packet_scope(), "SFTP");
proto_item * sftp_tree = proto_tree_add_subtree(tree, tvb, offset, -1, ett_sftp, NULL, NULL);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
guint8 typ;
typ = tvb_get_guint8(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_type, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, val_to_str(typ, ssh2_sftp_vals, "Unknown (%u)"));
switch(typ){
case SSH_FXP_INIT:{
int ver = tvb_get_ntohl(tvb, offset) ;
wmem_strbuf_append_printf(title, " SSH_FXP_INIT (%d) version %d", typ, ver);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_version, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
break;
}
case SSH_FXP_VERSION:{
int ver = tvb_get_ntohl(tvb, offset) ;
wmem_strbuf_append_printf(title, " SSH_FXP_VERSION (%d) version %d", typ, ver);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_version, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
break;
}
case SSH_FXP_OPEN:{
int id = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
guint8 * path = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, slen, ENC_UTF_8);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path, tvb, offset, slen, ENC_UTF_8);
offset += slen;
// int pflags = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_pflags, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
slen = dissect_sftp_attrs(tvb, pinfo, offset, sftp_tree);
offset += slen;
wmem_strbuf_append_printf(title, " SSH_FXP_OPEN (%d) id=%d [%s]", typ, id, path);
break;
}
case SSH_FXP_CLOSE:{
int id = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_handle_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
gchar * handle = tvb_bytes_to_str(wmem_packet_scope(), tvb, offset, slen);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_handle, tvb, offset, slen, ENC_NA);
offset += slen;
wmem_strbuf_append_printf(title, " SSH_FXP_CLOSE (%d) id=%d {%s}", typ, id, handle);
break;
}
case SSH_FXP_READ:{
int id = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_handle_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
gchar * handle = tvb_bytes_to_str(wmem_packet_scope(), tvb, offset, slen);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_handle, tvb, offset, slen, ENC_NA);
offset += slen;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_offset, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_length, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
wmem_strbuf_append_printf(title, " SSH_FXP_READ (%d) id=%d {%s}", typ, id, handle);
break;
}
case SSH_FXP_WRITE:{
int id = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_handle_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
gchar * handle = tvb_bytes_to_str(wmem_packet_scope(), tvb, offset, slen);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_handle, tvb, offset, slen, ENC_NA);
offset += slen;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_offset, tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
int dlen = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_data_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_data, tvb, offset, dlen, ENC_NA);
offset += dlen;
wmem_strbuf_append_printf(title, " SSH_FXP_WRITE (%d) id=%d {%s} len=%d", typ, id, handle, dlen);
break;
}
case SSH_FXP_LSTAT:{
int id = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
guint8 * path = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, slen, ENC_UTF_8);
wmem_strbuf_append_printf(title, " SSH_FXP_LSTAT (%d) id=%d [%s]", typ, id, path);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path, tvb, offset, slen, ENC_UTF_8);
offset += slen;
break;
}
case SSH_FXP_FSTAT:{
int id = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_handle_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
gchar * handle = tvb_bytes_to_str(wmem_packet_scope(), tvb, offset, slen);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_handle, tvb, offset, slen, ENC_NA);
offset += slen;
wmem_strbuf_append_printf(title, " SSH_FXP_FSTAT (%d) id=%d {%s}", typ, id, handle);
break;
}
case SSH_FXP_SETSTAT:{
int id = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
guint8 * path = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, slen, ENC_UTF_8);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path, tvb, offset, slen, ENC_UTF_8);
offset += slen;
slen = dissect_sftp_attrs(tvb, pinfo, offset, sftp_tree);
proto_item_set_len(sftp_tree, slen);
offset += slen;
wmem_strbuf_append_printf(title, " SSH_FXP_SETSTAT (%d) id=%d [%s]", typ, id, path);
break;
}
// case SSH_FXP_FSETSTAT):{
// break;
// }
case SSH_FXP_OPENDIR:{
int id = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
guint8 * path = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, slen, ENC_UTF_8);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path, tvb, offset, slen, ENC_UTF_8);
offset += slen;
wmem_strbuf_append_printf(title, " SSH_FXP_OPENDIR (%d) id=%d [%s]", typ, id, path);
break;
}
case SSH_FXP_READDIR:{
int id = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_handle_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
gchar * handle = tvb_bytes_to_str(wmem_packet_scope(), tvb, offset, slen);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_handle, tvb, offset, slen, ENC_NA);
offset += slen;
wmem_strbuf_append_printf(title, " SSH_FXP_READDIR (%d) id=%d {%s}", typ, id, handle);
break;
}
case SSH_FXP_REMOVE:{
int id = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
guint8 * path = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, slen, ENC_UTF_8);
wmem_strbuf_append_printf(title, " SSH_FXP_REMOVE (%d) id=%d [%s]", typ, id, path);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path, tvb, offset, slen, ENC_UTF_8);
offset += slen;
break;
}
// case SSH_FXP_MKDIR:{
// break;
// }
// case SSH_FXP_RMDIR:{
// break;
// }
case SSH_FXP_REALPATH:{
int id = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
slen = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
guint8 * path = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, slen, ENC_UTF_8);
wmem_strbuf_append_printf(title, " SSH_FXP_REALPATH (%d) id=%d [%s]", typ, id, path);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path, tvb, offset, slen, ENC_UTF_8);
offset += slen;
break;
}
case SSH_FXP_STAT:{
int id = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
guint8 * path = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, slen, ENC_UTF_8);
wmem_strbuf_append_printf(title, " SSH_FXP_STAT (%d) id=%d [%s]", typ, id, path);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path, tvb, offset, slen, ENC_UTF_8);
offset += slen;
break;
}
case SSH_FXP_RENAME:{
int id = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
guint8 * oldpath = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, slen, ENC_UTF_8);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path, tvb, offset, slen, ENC_UTF_8);
offset += slen;
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
guint8 * newpath = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, slen, ENC_UTF_8);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_path, tvb, offset, slen, ENC_UTF_8);
offset += slen;
wmem_strbuf_append_printf(title, " SSH_FXP_STAT (%d) id=%d [%s] > [%s]", typ, id, oldpath, newpath);
break;
}
// case SSH_FXP_READLINK:{
// break;
// }
// case SSH_FXP_SYMLINK:{
// break;
// }
case SSH_FXP_STATUS:{
int id = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
int code = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_status, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_error_message_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
guint8 * err_msg = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, slen, ENC_UTF_8);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_error_message, tvb, offset, slen, ENC_UTF_8);
offset += slen;
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_lang_tag_length, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sftp_tree, hf_ssh_lang_tag, tvb, offset, slen, ENC_UTF_8);
offset += slen;
wmem_strbuf_append_printf(title, " SSH_FXP_STATUS (%d) id=%d code=%d [%s]", typ, id, code, err_msg);
break;
}
case SSH_FXP_HANDLE:{
int id = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_handle_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
gchar * handle = tvb_bytes_to_str(wmem_packet_scope(), tvb, offset, slen);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_handle, tvb, offset, slen, ENC_NA);
offset += slen;
wmem_strbuf_append_printf(title, " SSH_FXP_HANDLE (%d) id=%d {%s}", typ, id, handle);
break;
}
case SSH_FXP_DATA:{
int id = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
int dlen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_data_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_data, tvb, offset, dlen, ENC_NA);
offset += dlen;
wmem_strbuf_append_printf(title, " SSH_FXP_DATA (%d) id=%d len=%d", typ, id, dlen);
break;
}
case SSH_FXP_NAME:{
wmem_strbuf_append_printf(title, " SSH_FXP_NAME (%d)", typ);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
guint count = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_name_count, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
guint cnt;
for(cnt=0;cnt<count;cnt++){
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_name_fn_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_name_fn, tvb, offset, slen, ENC_UTF_8);
offset += slen;
slen = tvb_get_ntohl(tvb, offset) ;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_name_ln_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sftp_tree, hf_ssh_sftp_name_ln, tvb, offset, slen, ENC_UTF_8);
offset += slen;
slen = dissect_sftp_attrs(tvb, pinfo, offset, sftp_tree);
offset += slen;
}
break;
}
case SSH_FXP_ATTRS:{
int id = tvb_get_ntohl(tvb, offset);
wmem_strbuf_append_printf(title, " SSH_FXP_ATTRS (%d) id=%d", typ, id);
proto_tree_add_item(sftp_tree, hf_ssh_sftp_id, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
slen = dissect_sftp_attrs(tvb, pinfo, offset, sftp_tree);
proto_item_set_len(sftp_tree, slen);
offset += slen;
break;
}
// case SSH_FXP_EXTENDED:{
// break;
// }
// case SSH_FXP_EXTENDED_REPLY:{
// break;
// }
default:{
wmem_strbuf_append_printf(title, " unknown (%d)", typ);
offset += plen;
break;
}
}
proto_item_set_text(sftp_tree, "%s", wmem_strbuf_get_str(title));
proto_item_set_len(sftp_tree, plen+4);
return offset;
}
static int dissect_sftp_attrs(tvbuff_t *packet_tvb, packet_info *pinfo _U_,
int offset, proto_item *msg_type_tree)
{
wmem_strbuf_t *title = wmem_strbuf_new(wmem_packet_scope(), "SFTP attributes");
proto_item * sftp_attrs_tree = proto_tree_add_subtree(msg_type_tree, packet_tvb, offset, -1, ett_sftp_attrs, NULL, NULL);
int offset0 = offset;
guint flags = tvb_get_ntohl(packet_tvb, offset) ;
proto_tree_add_item(sftp_attrs_tree, hf_ssh_sftp_attrs_flags, packet_tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
if(flags & SSH_FILEXFER_ATTR_SIZE){
proto_tree_add_item(sftp_attrs_tree, hf_ssh_sftp_attrs_size, packet_tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
}
if(flags & SSH_FILEXFER_ATTR_UIDGID){
proto_tree_add_item(sftp_attrs_tree, hf_ssh_sftp_attrs_uid, packet_tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if(flags & SSH_FILEXFER_ATTR_UIDGID){
proto_tree_add_item(sftp_attrs_tree, hf_ssh_sftp_attrs_gid, packet_tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if(flags & SSH_FILEXFER_ATTR_PERMISSIONS){
proto_tree_add_item(sftp_attrs_tree, hf_ssh_sftp_attrs_permissions, packet_tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if(flags & SSH_FILEXFER_ATTR_ACMODTIME){
proto_tree_add_item(sftp_attrs_tree, hf_ssh_sftp_attrs_atime, packet_tvb, offset, 4, ENC_TIME_SECS);
offset += 4;
}
if(flags & SSH_FILEXFER_ATTR_ACMODTIME){
proto_tree_add_item(sftp_attrs_tree, hf_ssh_sftp_attrs_mtime, packet_tvb, offset, 4, ENC_TIME_SECS);
offset += 4;
}
if(flags & SSH_FILEXFER_ATTR_EXTENDED){
proto_tree_add_item(sftp_attrs_tree, hf_ssh_sftp_attrs_extended_count, packet_tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
proto_item_set_text(sftp_attrs_tree, "%s", wmem_strbuf_get_str(title));
proto_item_set_len(sftp_attrs_tree, offset - offset0);
return offset - offset0;
}
void
proto_register_sftp(void)
{
static hf_register_info hf[] = {
{ &hf_ssh_sftp_len,
{ "SFTP packet length", "sftp.packet_length",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_type,
{ "SFTP packet type", "sftp.packet_type",
FT_UINT8, BASE_DEC, VALS(ssh2_sftp_vals), 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_version,
{ "SFTP version", "sftp.version",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_id,
{ "SFTP id", "sftp.id",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_path_len,
{ "SFTP path length", "sftp.path_len",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_path,
{ "SFTP path", "sftp.path",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_pflags,
{ "SFTP pflags", "sftp.pflags",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_name_count,
{ "SFTP count", "sftp.name_count",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_name_fn_len,
{ "SFTP name file name length", "sftp.name_fn_len",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_name_fn,
{ "SFTP name file name", "sftp.name_fn",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_name_ln_len,
{ "SFTP name long name length", "sftp.name_ln_len",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_name_ln,
{ "SFTP name long name", "sftp.name_ln",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_attrs_flags,
{ "SFTP attributes flags", "sftp.attrs.flags",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_attrs_size,
{ "SFTP attributes file size", "sftp.attrs.size",
FT_UINT64, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_attrs_uid,
{ "SFTP attributes uid", "sftp.attrs.uid",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_attrs_gid,
{ "SFTP attributes gid", "sftp.attrs.gid",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_attrs_permissions,
{ "SFTP attributes permissions", "sftp.attrs.permissions",
FT_UINT32, BASE_OCT, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_attrs_atime,
{ "SFTP attributes access time", "sftp.attrs.atime",
FT_ABSOLUTE_TIME, ABSOLUTE_TIME_LOCAL, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_attrs_mtime,
{ "SFTP attributes modification time", "sftp.attrs.mtime",
FT_ABSOLUTE_TIME, ABSOLUTE_TIME_LOCAL, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_attrs_extended_count,
{ "SFTP attributes extended count", "sftp.attrs.extended_count",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_offset,
{ "SFTP offset", "sftp.offset",
FT_UINT64, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_length,
{ "SFTP length", "sftp.length",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_handle_len,
{ "SFTP handle length", "sftp.handle_len",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_handle,
{ "SFTP handle", "sftp.handle",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_status,
{ "SFTP error/status code", "sftp.status",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_error_message_len,
{ "SFTP error message length", "sftp.error_message_len",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_error_message,
{ "SFTP error message", "sftp.error_message",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_data_len,
{ "SFTP data length", "sftp.data_len",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_sftp_data,
{ "SFTP data", "sftp.data",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_lang_tag_length,
{ "Language tag length", "sftp.lang_tag_length",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_ssh_lang_tag,
{ "Language tag", "sftp.lang_tag",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }},
};
static gint *ett[] = {
&ett_sftp,
&ett_sftp_attrs,
};
proto_sftp = proto_register_protocol("SSH File Transfer Protocol", "SFTP", "sftp");
proto_register_field_array(proto_sftp, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
sftp_handle = register_dissector("sftp", dissect_sftp, proto_sftp);
}
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