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xrdp-proprietary/sesman/chansrv/clipboard_file.c

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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2012
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* MS-RDPECLIP
* http://msdn.microsoft.com/en-us/library/cc241066%28prot.20%29.aspx
*
* CLIPRDR_FILEDESCRIPTOR
* http://msdn.microsoft.com/en-us/library/ff362447%28prot.20%29.aspx */
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/extensions/Xfixes.h>
#include "arch.h"
#include "parse.h"
#include "os_calls.h"
#include "list.h"
#include "chansrv.h"
#include "clipboard.h"
#include "clipboard_file.h"
#include "clipboard_common.h"
#include "xcommon.h"
#include "chansrv_fuse.h"
/* module based logging */
#define LOG_ERROR 0
#define LOG_INFO 1
#define LOG_DEBUG 2
#define LOG_LVL LOG_ERROR
#define log_error(_params...) \
{ \
g_write("[%10.10u]: CLIPFILE %s: %d : ERROR: ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
}
#define log_always(_params...) \
{ \
g_write("[%10.10u]: CLIPFILE %s: %d : ALWAYS: ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
}
#define log_info(_params...) \
{ \
if (LOG_INFO <= LOG_LVL) \
{ \
g_write("[%10.10u]: CLIPFILE %s: %d : ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
} \
}
#define log_debug(_params...) \
{ \
if (LOG_DEBUG <= LOG_LVL) \
{ \
g_write("[%10.10u]: CLIPFILE %s: %d : ", \
g_time3(), __func__, __LINE__); \
g_writeln (_params); \
} \
}
extern int g_cliprdr_chan_id; /* in chansrv.c */
extern struct clip_s2c g_clip_s2c; /* in clipboard.c */
extern struct clip_c2s g_clip_c2s; /* in clipboard.c */
extern char g_fuse_clipboard_path[];
struct cb_file_info
{
char pathname[256];
char filename[256];
int flags;
int size;
tui64 time;
};
static struct list *g_files_list = 0;
/* used when server is asking for file info from the client */
static int g_file_request_sent_type = 0;
/* number of seconds from 1 Jan. 1601 00:00 to 1 Jan 1970 00:00 UTC */
#define CB_EPOCH_DIFF 11644473600LL
/*****************************************************************************/
static tui64 APP_CC
timeval2wintime(struct timeval *tv)
{
tui64 result;
result = CB_EPOCH_DIFF;
result += tv->tv_sec;
result *= 10000000LL;
result += tv->tv_usec * 10;
return result;
}
/*****************************************************************************/
/* this will replace %20 or any hex with the space or correct char
* returns error */
static int APP_CC
clipboard_check_file(char *filename)
{
char lfilename[256];
char jchr[8];
int lindex;
int index;
g_memset(lfilename, 0, 256);
lindex = 0;
index = 0;
while (filename[index] != 0)
{
if (filename[index] == '%')
{
jchr[0] = filename[index + 1];
jchr[1] = filename[index + 2];
jchr[2] = 0;
index += 3;
lfilename[lindex] = g_htoi(jchr);
lindex++;
}
else
{
lfilename[lindex] = filename[index];
lindex++;
index++;
}
}
log_debug("[%s] [%s]", filename, lfilename);
g_strcpy(filename, lfilename);
return 0;
}
/*****************************************************************************/
static int APP_CC
clipboard_get_file(char* file, int bytes)
{
int sindex;
int pindex;
int flags;
char full_fn[256]; /* /etc/xrdp/xrdp.ini */
char filename[256]; /* xrdp.ini */
char pathname[256]; /* /etc/xrdp */
struct cb_file_info *cfi;
/* x-special/gnome-copied-files */
if ((g_strncmp(file, "copy", 4) == 0) && (bytes == 4))
{
return 0;
}
if ((g_strncmp(file, "cut", 3) == 0) && (bytes == 3))
{
return 0;
}
sindex = 0;
flags = CB_FILE_ATTRIBUTE_ARCHIVE;
/* text/uri-list */
/* x-special/gnome-copied-files */
if (g_strncmp(file, "file://", 7) == 0)
{
sindex = 7;
}
pindex = bytes;
while (pindex > sindex)
{
if (file[pindex] == '/')
{
break;
}
pindex--;
}
g_memset(pathname, 0, 256);
g_memset(filename, 0, 256);
g_memcpy(pathname, file + sindex, pindex - sindex);
if (pathname[0] == 0)
{
pathname[0] = '/';
}
g_memcpy(filename, file + pindex + 1, (bytes - 1) - pindex);
/* this should replace %20 with space */
clipboard_check_file(filename);
g_snprintf(full_fn, 255, "%s/%s", pathname, filename);
if (g_directory_exist(full_fn))
{
log_error("clipboard_get_file: file [%s] is a directory, "
"not supported", full_fn);
flags |= CB_FILE_ATTRIBUTE_DIRECTORY;
return 1;
}
if (!g_file_exist(full_fn))
{
log_error("clipboard_get_file: file [%s] does not exist",
full_fn);
return 1;
}
else
{
cfi = (struct cb_file_info*)g_malloc(sizeof(struct cb_file_info), 1);
list_add_item(g_files_list, (tintptr)cfi);
g_strcpy(cfi->filename, filename);
g_strcpy(cfi->pathname, pathname);
cfi->size = g_file_get_size(full_fn);
cfi->flags = flags;
cfi->time = (g_time1() + CB_EPOCH_DIFF) * 10000000LL;
log_debug("ok filename [%s] pathname [%s] size [%d]",
cfi->filename, cfi->pathname, cfi->size);
}
return 0;
}
/*****************************************************************************/
static int APP_CC
clipboard_get_files(char *files, int bytes)
{
int index;
int file_index;
char file[512];
file_index = 0;
for (index = 0; index < bytes; index++)
{
if (files[index] == '\n' || files[index] == '\r')
{
if (file_index > 0)
{
if (clipboard_get_file(file, file_index) == 0)
{
}
file_index = 0;
}
}
else
{
file[file_index] = files[index];
file_index++;
}
}
if (file_index > 0)
{
if (clipboard_get_file(file, file_index) == 0)
{
}
}
if (g_files_list->count < 1)
{
return 1;
}
return 0;
}
/*****************************************************************************/
/* server to client */
/* response to client asking for clipboard contents that is file list */
int APP_CC
clipboard_send_data_response_for_file(char *data, int data_size)
{
struct stream *s;
int size;
int rv;
int bytes_after_header;
int cItems;
int flags;
int index;
tui32 ui32;
char fn[256];
struct cb_file_info *cfi;
log_debug("clipboard_send_data_response_for_file: data_size %d",
data_size);
//g_hexdump(data, data_size);
if (g_files_list == 0)
{
g_files_list = list_create();
g_files_list->auto_free = 1;
}
list_clear(g_files_list);
clipboard_get_files(data, data_size);
cItems = g_files_list->count;
bytes_after_header = cItems * 592 + 4;
make_stream(s);
init_stream(s, 64 + bytes_after_header);
out_uint16_le(s, CB_FORMAT_DATA_RESPONSE); /* 5 CLIPRDR_DATA_RESPONSE */
out_uint16_le(s, CB_RESPONSE_OK); /* 1 status */
out_uint32_le(s, bytes_after_header);
out_uint32_le(s, cItems);
for (index = 0; index < cItems; index++)
{
cfi = (struct cb_file_info *)list_get_item(g_files_list, index);
flags = CB_FD_ATTRIBUTES | CB_FD_FILESIZE | CB_FD_WRITESTIME | CB_FD_PROGRESSUI;
out_uint32_le(s, flags);
out_uint8s(s, 32); /* reserved1 */
flags = cfi->flags;
out_uint32_le(s, flags);
out_uint8s(s, 16); /* reserved2 */
/* file time */
/* 100-nanoseconds intervals since 1 January 1601 */
//out_uint32_le(s, 0x2c305d08); /* 25 October 2009, 21:17 */
//out_uint32_le(s, 0x01ca55f3);
ui32 = cfi->time & 0xffffffff;
out_uint32_le(s, ui32);
ui32 = cfi->time >> 32;
out_uint32_le(s, ui32);
/* file size */
out_uint32_le(s, 0);
out_uint32_le(s, cfi->size);
g_snprintf(fn, 255, "%s", cfi->filename);
clipboard_out_unicode(s, fn, 256);
out_uint8s(s, 8); /* pad */
}
out_uint32_le(s, 0);
s_mark_end(s);
size = (int)(s->end - s->data);
rv = send_channel_data(g_cliprdr_chan_id, s->data, size);
free_stream(s);
return rv;
}
/*****************************************************************************/
/* send the file size from server to the client */
static int APP_CC
clipboard_send_file_size(int streamId, int lindex)
{
struct stream *s;
int size;
int rv;
int file_size;
struct cb_file_info *cfi;
if (g_files_list == 0)
{
log_error("clipboard_send_file_size: error g_files_list is nil");
return 1;
}
cfi = (struct cb_file_info *)list_get_item(g_files_list, lindex);
if (cfi == 0)
{
log_error("clipboard_send_file_size: error cfi is nil");
return 1;
}
file_size = cfi->size;
log_debug("clipboard_send_file_size: streamId %d file_size %d",
streamId, file_size);
make_stream(s);
init_stream(s, 8192);
out_uint16_le(s, CB_FILECONTENTS_RESPONSE); /* 9 */
out_uint16_le(s, CB_RESPONSE_OK); /* 1 status */
out_uint32_le(s, 12);
out_uint32_le(s, streamId);
out_uint32_le(s, file_size);
out_uint32_le(s, 0);
out_uint32_le(s, 0);
s_mark_end(s);
size = (int)(s->end - s->data);
rv = send_channel_data(g_cliprdr_chan_id, s->data, size);
free_stream(s);
return rv;
}
/*****************************************************************************/
/* ask the client to send the file size */
int APP_CC
clipboard_request_file_size(int stream_id, int lindex)
{
struct stream *s;
int size;
int rv;
log_debug("clipboard_request_file_size:");
if (g_file_request_sent_type != 0)
{
log_error("clipboard_request_file_size: warning, still waiting "
"for CB_FILECONTENTS_RESPONSE");
}
make_stream(s);
init_stream(s, 8192);
out_uint16_le(s, CB_FILECONTENTS_REQUEST); /* 8 */
out_uint16_le(s, 0);
out_uint32_le(s, 28);
out_uint32_le(s, stream_id);
out_uint32_le(s, lindex);
out_uint32_le(s, CB_FILECONTENTS_SIZE);
out_uint32_le(s, 0); /* nPositionLow */
out_uint32_le(s, 0); /* nPositionHigh */
out_uint32_le(s, 0); /* cbRequested */
out_uint32_le(s, 0); /* clipDataId */
out_uint32_le(s, 0);
s_mark_end(s);
size = (int)(s->end - s->data);
rv = send_channel_data(g_cliprdr_chan_id, s->data, size);
free_stream(s);
g_file_request_sent_type = CB_FILECONTENTS_SIZE;
return rv;
}
/*****************************************************************************/
/* send a chunk of the file from server to client */
static int APP_CC
clipboard_send_file_data(int streamId, int lindex,
int nPositionLow, int cbRequested)
{
struct stream *s;
int size;
int rv;
int fd;
char full_fn[256];
struct cb_file_info *cfi;
if (g_files_list == 0)
{
log_error("clipboard_send_file_data: error g_files_list is nil");
return 1;
}
cfi = (struct cb_file_info *)list_get_item(g_files_list, lindex);
if (cfi == 0)
{
log_error("clipboard_send_file_data: error cfi is nil");
return 1;
}
log_debug("clipboard_send_file_data: streamId %d lindex %d "
"nPositionLow %d cbRequested %d", streamId, lindex,
nPositionLow, cbRequested);
g_snprintf(full_fn, 255, "%s/%s", cfi->pathname, cfi->filename);
fd = g_file_open_ex(full_fn, 1, 0, 0, 0);
if (fd == -1)
{
log_error("clipboard_send_file_data: file open [%s] failed",
full_fn);
return 1;
}
g_file_seek(fd, nPositionLow);
make_stream(s);
init_stream(s, cbRequested + 64);
size = g_file_read(fd, s->data + 12, cbRequested);
if (size < 1)
{
log_error("clipboard_send_file_data: read error, want %d got %d",
cbRequested, size);
free_stream(s);
g_file_close(fd);
return 1;
}
out_uint16_le(s, CB_FILECONTENTS_RESPONSE); /* 9 */
out_uint16_le(s, CB_RESPONSE_OK); /* 1 status */
out_uint32_le(s, size + 4);
out_uint32_le(s, streamId);
s->p += size;
out_uint32_le(s, 0);
s_mark_end(s);
size = (int)(s->end - s->data);
rv = send_channel_data(g_cliprdr_chan_id, s->data, size);
free_stream(s);
g_file_close(fd);
return rv;
}
/*****************************************************************************/
/* ask the client to send the file size */
int APP_CC
clipboard_request_file_data(int stream_id, int lindex, int offset,
int request_bytes)
{
struct stream *s;
int size;
int rv;
log_debug("clipboard_request_file_data: stream_id=%d lindex=%d off=%d request_bytes=%d",
stream_id, lindex, offset, request_bytes);
if (g_file_request_sent_type != 0)
{
log_error("clipboard_request_file_data: warning, still waiting "
"for CB_FILECONTENTS_RESPONSE");
}
make_stream(s);
init_stream(s, 8192);
out_uint16_le(s, CB_FILECONTENTS_REQUEST); /* 8 */
out_uint16_le(s, 0);
out_uint32_le(s, 28);
out_uint32_le(s, stream_id);
out_uint32_le(s, lindex);
out_uint32_le(s, CB_FILECONTENTS_RANGE);
out_uint32_le(s, offset); /* nPositionLow */
out_uint32_le(s, 0); /* nPositionHigh */
out_uint32_le(s, request_bytes); /* cbRequested */
out_uint32_le(s, 0); /* clipDataId */
out_uint32_le(s, 0);
s_mark_end(s);
size = (int)(s->end - s->data);
rv = send_channel_data(g_cliprdr_chan_id, s->data, size);
free_stream(s);
g_file_request_sent_type = CB_FILECONTENTS_RANGE;
return rv;
}
/*****************************************************************************/
/* client is asking from info about a file */
int APP_CC
clipboard_process_file_request(struct stream *s, int clip_msg_status,
int clip_msg_len)
{
int streamId;
int lindex;
int dwFlags;
int nPositionLow;
int nPositionHigh;
int cbRequested;
//int clipDataId;
log_debug("clipboard_process_file_request:");
//g_hexdump(s->p, clip_msg_len);
in_uint32_le(s, streamId);
in_uint32_le(s, lindex);
in_uint32_le(s, dwFlags);
in_uint32_le(s, nPositionLow);
in_uint32_le(s, nPositionHigh);
in_uint32_le(s, cbRequested);
//in_uint32_le(s, clipDataId); /* options, used when locking */
if (dwFlags & CB_FILECONTENTS_SIZE)
{
clipboard_send_file_size(streamId, lindex);
}
if (dwFlags & CB_FILECONTENTS_RANGE)
{
clipboard_send_file_data(streamId, lindex, nPositionLow, cbRequested);
}
return 0;
}
/*****************************************************************************/
/* server requested info about the file and this is the responce
it's either the file size or file data */
int APP_CC
clipboard_process_file_response(struct stream *s, int clip_msg_status,
int clip_msg_len)
{
int streamId;
int file_size;
log_debug("clipboard_process_file_response:");
if (g_file_request_sent_type == CB_FILECONTENTS_SIZE)
{
g_file_request_sent_type = 0;
in_uint32_le(s, streamId);
in_uint32_le(s, file_size);
log_debug("clipboard_process_file_response: streamId %d "
"file_size %d", streamId, file_size);
xfuse_file_contents_size(streamId, file_size);
}
else if (g_file_request_sent_type == CB_FILECONTENTS_RANGE)
{
g_file_request_sent_type = 0;
in_uint32_le(s, streamId);
xfuse_file_contents_range(streamId, s->p, clip_msg_len - 4);
}
else
{
log_error("clipboard_process_file_response: error");
g_file_request_sent_type = 0;
}
return 0;
}
/*****************************************************************************/
/* read in CLIPRDR_FILEDESCRIPTOR */
static int APP_CC
clipboard_c2s_in_file_info(struct stream *s, struct clip_file_desc *cfd)
{
int num_chars;
int ex_bytes;
in_uint32_le(s, cfd->flags);
in_uint8s(s, 32); /* reserved1 */
in_uint32_le(s, cfd->fileAttributes);
in_uint8s(s, 16); /* reserved2 */
in_uint32_le(s, cfd->lastWriteTimeLow);
in_uint32_le(s, cfd->lastWriteTimeHigh);
in_uint32_le(s, cfd->fileSizeHigh);
in_uint32_le(s, cfd->fileSizeLow);
num_chars = 256;
clipboard_in_unicode(s, cfd->cFileName, &num_chars);
ex_bytes = 512 - num_chars * 2;
ex_bytes -= 2;
in_uint8s(s, ex_bytes);
in_uint8s(s, 8); /* pad */
log_debug("clipboard_c2s_in_file_info:");
log_debug(" flags 0x%8.8x", cfd->flags);
log_debug(" fileAttributes 0x%8.8x", cfd->fileAttributes);
log_debug(" lastWriteTime 0x%8.8x%8.8x", cfd->lastWriteTimeHigh,
cfd->lastWriteTimeLow);
log_debug(" fileSize 0x%8.8x%8.8x", cfd->fileSizeHigh,
cfd->fileSizeLow);
log_debug(" num_chars %d cFileName [%s]", num_chars, cfd->cFileName);
return 0;
}
/*****************************************************************************/
int APP_CC
clipboard_c2s_in_files(struct stream *s, char *file_list)
{
int cItems;
int lindex;
int str_len;
struct clip_file_desc *cfd;
char *ptr;
if (!s_check_rem(s, 4))
{
log_error("clipboard_c2s_in_files: parse error");
return 1;
}
in_uint32_le(s, cItems);
if (cItems > 64 * 1024) /* sanity check */
{
log_error("clipboard_c2s_in_files: error cItems %d too big", cItems);
return 1;
}
xfuse_clear_clip_dir();
log_debug("clipboard_c2s_in_files: cItems %d", cItems);
cfd = (struct clip_file_desc *)
g_malloc(sizeof(struct clip_file_desc), 0);
ptr = file_list;
for (lindex = 0; lindex < cItems; lindex++)
{
g_memset(cfd, 0, sizeof(struct clip_file_desc));
clipboard_c2s_in_file_info(s, cfd);
if ((g_pos(cfd->cFileName, "\\") >= 0) ||
(cfd->fileAttributes & CB_FILE_ATTRIBUTE_DIRECTORY))
{
log_error("clipboard_c2s_in_files: skipping directory not "
"supported [%s]", cfd->cFileName);
continue;
}
xfuse_add_clip_dir_item(cfd->cFileName, 0, cfd->fileSizeLow, lindex);
g_strcpy(ptr, "file://");
ptr += 7;
str_len = g_strlen(g_fuse_clipboard_path);
g_strcpy(ptr, g_fuse_clipboard_path);
ptr += str_len;
*ptr = '/';
ptr++;
str_len = g_strlen(cfd->cFileName);
g_strcpy(ptr, cfd->cFileName);
ptr += str_len;
*ptr = '\n';
ptr++;
}
*ptr = 0;
g_free(cfd);
return 0;
}
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