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xrdp/sesman/chansrv/clipboard_file.c
matt335672 0f6e731524 clipboard: Allow a file read to return 0 for EOF 
When used with a FreeRDP client on Linux, a file copy operation from
the clipboard detects end-of-file by a read returning 0 bytes. This is
currently marked as an error.

It is assumed that mstsc.exe detects end-of-file in another way, which
is why this has not been found before.
2024-08-02 12:41:20 +01:00

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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 */
#if defined(HAVE_CONFIG_H)
#include <config_ac.h>
#endif
#include <ctype.h>
#include <sys/time.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/extensions/Xfixes.h>
#include "arch.h"
#include "parse.h"
#include "os_calls.h"
#include "string_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"
#include "ms-rdpeclip.h"
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;
char *filename;
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
/*****************************************************************************/
#if 0
static tui64
timeval2wintime(struct timeval *tv)
{
tui64 result;
result = CB_EPOCH_DIFF;
result += tv->tv_sec;
result *= 10000000LL;
result += tv->tv_usec * 10;
return result;
}
#endif
/**
* Gets a useable filename from a file specification passed to us
*
* The passed-in specification may contain instances of RFC3986 encoded
* octets '%xx' where 'x' is a hex digit (e.g. %20 == ASCII SPACE). For
* UTF-8, there may be many of these (e.g. %E6%97%A5 maps to the U+65E5
* Unicode character)
*
* The result must be free'd by the caller.
*/
static char *
decode_rfc3986(const char *rfc3986, int len)
{
char *result = (char *)malloc(len + 1);
if (result != NULL)
{
int i = 0;
int j = 0;
/* Copy the passed-in filename so we can modify it */
while (i < len)
{
/* Check for %xx for a character (e.g. %20 == ASCII 32 == SPACE) */
if (rfc3986[i] == '%' && (len - i) > 2 &&
isxdigit(rfc3986[i + 1]) && isxdigit(rfc3986[i + 2]))
{
char jchr[] = { rfc3986[i + 1], rfc3986[i + 2], '\0' };
result[j++] = g_htoi(jchr);
i += 3;
}
else
{
result[j++] = rfc3986[i++];
}
}
result[j] = '\0';
}
return result;
}
/**
* Allocates a alloc_cb_file_info struct
*
* The memory for the struct is allocated in such a way that a single
* free() call can be used to de-allocate it
*
* Filename elements are copied into the struct
*/
static struct cb_file_info *
alloc_cb_file_info(const char *full_name)
{
struct cb_file_info *result = NULL;
/* Find the last path separator in the string */
const char *psep = strrchr(full_name, '/');
/* Separate the name into a path and an unqualified name */
const char *path_ptr = "/";
unsigned int path_len = 1;
const char *name_ptr;
if (psep == NULL)
{
name_ptr = full_name;
}
else if (psep == full_name)
{
name_ptr = full_name + 1;
}
else
{
path_ptr = full_name;
path_len = psep - full_name;
name_ptr = psep + 1;
}
/* Allocate a block big enough for the struct, and
* for both the strings */
unsigned int name_len = strlen(name_ptr);
unsigned int alloc_size = sizeof(struct cb_file_info) +
(path_len + 1) + (name_len + 1);
result = (struct cb_file_info *)malloc(alloc_size);
if (result != NULL)
{
/* Get a pointer to the first byte past the struct */
result->pathname = (char *)(result + 1);
result->filename = result->pathname + path_len + 1;
memcpy(result->pathname, path_ptr, path_len);
result->pathname[path_len] = '\0';
memcpy(result->filename, name_ptr, name_len);
result->filename[name_len] = '\0';
}
return result;
}
/***
* See MS-RDPECLIP 3.1.5.4.7
*
* Sends a failure response to a CLIPRDR_FILECONTENTS_REQUEST
* @param streamId Stream ID from CLIPRDR_FILECONTENTS_REQUEST
* @return 0 for success
*/
static int
clipboard_send_filecontents_response_fail(int streamId)
{
LOG_DEVEL(LOG_LEVEL_TRACE, "clipboardn_send_filecontents_response_fail:");
struct stream *s;
int size;
int rv;
make_stream(s);
init_stream(s, 64);
out_uint16_le(s, CB_FILECONTENTS_RESPONSE);
out_uint16_le(s, CB_RESPONSE_FAIL);
out_uint32_le(s, 4);
out_uint32_le(s, streamId);
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;
}
/*****************************************************************************/
static int
clipboard_get_file(const char *file, int bytes)
{
char *full_fn;
struct cb_file_info *cfi;
int result = 1;
/* 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;
}
/* text/uri-list */
/* x-special/gnome-copied-files */
if (bytes > 7 && g_strncmp(file, "file://", 7) == 0)
{
full_fn = decode_rfc3986(file + 7, bytes - 7);
}
else
{
full_fn = decode_rfc3986(file, bytes);
}
if (full_fn == NULL)
{
LOG(LOG_LEVEL_ERROR, "clipboard_get_file: Out of memory");
return 1;
}
/*
* Before we look at the file, see if it's in the FUSE filesystem. If it is,
* we can't call normal file checking functions, as these will result in
* a deadlock */
if (xfuse_path_in_xfuse_fs(full_fn))
{
LOG(LOG_LEVEL_ERROR, "clipboard_get_file: Can't add client-side file "
"%s to clipboard", full_fn);
}
else if (g_directory_exist(full_fn))
{
LOG(LOG_LEVEL_ERROR, "clipboard_get_file: file [%s] is a directory, "
"not supported", full_fn);
}
else if (!g_file_exist(full_fn))
{
LOG(LOG_LEVEL_ERROR, "clipboard_get_file: file [%s] does not exist",
full_fn);
}
else if ((cfi = alloc_cb_file_info(full_fn)) == NULL)
{
LOG(LOG_LEVEL_ERROR, "clipboard_get_file: Out of memory");
}
else
{
list_add_item(g_files_list, (tintptr)cfi);
cfi->size = g_file_get_size(full_fn);
cfi->flags = CB_FILE_ATTRIBUTE_ARCHIVE;
cfi->time = (g_time1() + CB_EPOCH_DIFF) * 10000000LL;
LOG_DEVEL(LOG_LEVEL_DEBUG, "ok filename [%s] pathname [%s] size [%d]",
cfi->filename, cfi->pathname, cfi->size);
result = 0;
}
free(full_fn);
return result;
}
/*****************************************************************************/
/*
* Calls clipboard_get_file() for each filename in a list.
*
* List items are separated by line terminators. Blank items are ignored */
static int
clipboard_get_files(const char *files, int bytes)
{
const char *start = files;
const char *end = files + bytes;
const char *p;
for (p = start ; p < end ; ++p)
{
if (*p == '\n' || *p == '\r')
{
/* Skip zero-length files (which might be caused by
* multiple line terminators */
if (p > start)
{
/* Get file. Errors are logged */
(void)clipboard_get_file(start, p - start);
}
/* Move the start of filename pointer to either 'end', or
* the next character which will either be a filename or
* another terminator */
start = p + 1;
}
}
if (end > start)
{
(void)clipboard_get_file(start, end - start);
}
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
clipboard_send_data_response_for_file(const char *data, int data_size)
{
struct stream *s;
int size;
int rv;
int bytes_after_header;
int cItems;
int flags;
int index;
tui32 ui32;
unsigned int utf8_count;
unsigned int utf16_count;
struct cb_file_info *cfi;
LOG_DEVEL(LOG_LEVEL_DEBUG, "clipboard_send_data_response_for_file: data_size %d",
data_size);
LOG_DEVEL_HEXDUMP(LOG_LEVEL_TRACE, "", 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);
/* Name is fixed-size 260 UTF-16 words */
utf8_count = strlen(cfi->filename) + 1; // Include terminator
utf16_count = utf8_as_utf16_word_count(cfi->filename, utf8_count);
if (utf16_count > 260)
{
LOG(LOG_LEVEL_ERROR,
"clipboard_send_data_response_for_file:"
" filename overflow (%u words)", utf16_count);
utf8_count = 0;
utf16_count = 0;
}
out_utf8_as_utf16_le(s, cfi->filename, utf8_count);
out_uint8s(s, (260 - utf16_count) * 2);
}
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
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_DEVEL(LOG_LEVEL_ERROR, "clipboard_send_file_size: error g_files_list is nil");
clipboard_send_filecontents_response_fail(streamId);
return 1;
}
cfi = (struct cb_file_info *)list_get_item(g_files_list, lindex);
if (cfi == 0)
{
LOG_DEVEL(LOG_LEVEL_ERROR, "clipboard_send_file_size: error cfi is nil");
clipboard_send_filecontents_response_fail(streamId);
return 1;
}
if (cfi->size < 0)
{
LOG(LOG_LEVEL_ERROR, "clipboard_send_file_size: error cfi->size is negative"
"value [%d]", cfi->size);
clipboard_send_filecontents_response_fail(streamId);
return 1;
}
file_size = cfi->size;
LOG_DEVEL(LOG_LEVEL_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
clipboard_request_file_size(int stream_id, int lindex)
{
struct stream *s;
int size;
int rv;
LOG_DEVEL(LOG_LEVEL_DEBUG, "clipboard_request_file_size:");
if (g_file_request_sent_type != 0)
{
LOG_DEVEL(LOG_LEVEL_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
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_DEVEL(LOG_LEVEL_ERROR, "clipboard_send_file_data: error g_files_list is nil");
clipboard_send_filecontents_response_fail(streamId);
return 1;
}
cfi = (struct cb_file_info *)list_get_item(g_files_list, lindex);
if (cfi == 0)
{
LOG_DEVEL(LOG_LEVEL_ERROR, "clipboard_send_file_data: error cfi is nil");
clipboard_send_filecontents_response_fail(streamId);
return 1;
}
LOG_DEVEL(LOG_LEVEL_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_ro(full_fn);
if (fd == -1)
{
LOG(LOG_LEVEL_ERROR, "clipboard_send_file_data: file open [%s] failed: %s",
full_fn, g_get_strerror());
clipboard_send_filecontents_response_fail(streamId);
return 1;
}
if (g_file_seek(fd, nPositionLow) < 0)
{
LOG(LOG_LEVEL_ERROR, "clipboard_send_file_data: seek error in file [%s]: %s",
full_fn, g_get_strerror());
g_file_close(fd);
clipboard_send_filecontents_response_fail(streamId);
return 1;
}
make_stream(s);
init_stream(s, cbRequested + 64);
size = g_file_read(fd, s->data + 12, cbRequested);
// If we're at end-of-file, 0 is a valid response
if (size < 0)
{
LOG_DEVEL(LOG_LEVEL_ERROR,
"clipboard_send_file_data: read error, want %d got [%s]",
cbRequested, g_get_strerror());
free_stream(s);
g_file_close(fd);
clipboard_send_filecontents_response_fail(streamId);
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);
/* Log who transferred which file via clipboard for the purpose of audit */
LOG(LOG_LEVEL_INFO, "S2C: Transferred a file: filename=%s, uid=%d", full_fn, g_getuid());
return rv;
}
/*****************************************************************************/
/* ask the client to send the file size */
int
clipboard_request_file_data(int stream_id, int lindex, int offset,
int request_bytes)
{
struct stream *s;
int size;
int rv;
LOG_DEVEL(LOG_LEVEL_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_DEVEL(LOG_LEVEL_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
clipboard_process_file_request(struct stream *s, int clip_msg_status,
int clip_msg_len)
{
int streamId;
int lindex;
int dwFlags;
int nPositionLow;
int cbRequested;
//int clipDataId;
LOG_DEVEL(LOG_LEVEL_DEBUG, "clipboard_process_file_request:");
LOG_DEVEL_HEXDUMP(LOG_LEVEL_TRACE, "", 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_uint8s(s, 4); /* 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 response
it's either the file size or file data */
int
clipboard_process_file_response(struct stream *s, int clip_msg_status,
int clip_msg_len)
{
int streamId;
int file_size;
LOG_DEVEL(LOG_LEVEL_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_DEVEL(LOG_LEVEL_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_DEVEL(LOG_LEVEL_ERROR, "clipboard_process_file_response: error");
g_file_request_sent_type = 0;
}
return 0;
}
/*****************************************************************************/
/* read in CLIPRDR_FILEDESCRIPTOR [MS-RDPECLIP] 2.2.5.2.3.1 */
static int
clipboard_c2s_in_file_info(struct stream *s, struct clip_file_desc *cfd)
{
int filename_bytes;
int ex_bytes;
if (!s_check_rem_and_log(s, 4 + 32 + 4 + 16 + 8 + 8 + 520,
"Parsing [MS-RDPECLIP] CLIPRDR_FILEDESCRIPTOR"))
{
return 1;
}
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);
filename_bytes =
clipboard_in_utf16_le_as_utf8(s, cfd->cFileName,
sizeof(cfd->cFileName));
if (filename_bytes > 520)
{
LOG(LOG_LEVEL_ERROR,
"Filename in CLIPRDR_FILEDESCRIPTOR is too long (%d bytes)",
filename_bytes);
return 1;
}
ex_bytes = 520 - filename_bytes;
in_uint8s(s, ex_bytes);
LOG_DEVEL(LOG_LEVEL_DEBUG, "clipboard_c2s_in_file_info:");
LOG_DEVEL(LOG_LEVEL_DEBUG, " flags 0x%8.8x", cfd->flags);
LOG_DEVEL(LOG_LEVEL_DEBUG, " fileAttributes 0x%8.8x", cfd->fileAttributes);
LOG_DEVEL(LOG_LEVEL_DEBUG, " lastWriteTime 0x%8.8x%8.8x", cfd->lastWriteTimeHigh,
cfd->lastWriteTimeLow);
LOG_DEVEL(LOG_LEVEL_DEBUG, " fileSize 0x%8.8x%8.8x", cfd->fileSizeHigh,
cfd->fileSizeLow);
LOG_DEVEL(LOG_LEVEL_DEBUG, " cFileName [%s]", cfd->cFileName);
return 0;
}
/*****************************************************************************/
int
clipboard_c2s_in_files(struct stream *s, char *file_list, int file_list_size,
const char *fprefix)
{
int citems;
int lindex;
int str_len;
struct clip_file_desc cfd;
char *ptr;
char *last; /* Last writeable char in buffer */
int dropped_files = 0; /* # files we can't add to buffer */
if (file_list_size < 1)
{
LOG(LOG_LEVEL_ERROR, "clipboard_c2s_in_files: No space in string");
return 1;
}
if (!s_check_rem(s, 4))
{
LOG(LOG_LEVEL_ERROR, "clipboard_c2s_in_files: parse error");
return 1;
}
in_uint32_le(s, citems);
if (citems < 0 || citems > 64 * 1024) /* sanity check */
{
LOG(LOG_LEVEL_ERROR, "clipboard_c2s_in_files: "
"Bad number of files in list (%d)", citems);
return 1;
}
xfuse_clear_clip_dir();
LOG_DEVEL(LOG_LEVEL_DEBUG, "clipboard_c2s_in_files: cItems %d", citems);
ptr = file_list;
last = file_list + file_list_size - 1;
for (lindex = 0; lindex < citems; lindex++)
{
g_memset(&cfd, 0, sizeof(struct clip_file_desc));
if (clipboard_c2s_in_file_info(s, &cfd) != 0)
{
return 1;
}
if ((g_pos(cfd.cFileName, "\\") >= 0) ||
(cfd.fileAttributes & CB_FILE_ATTRIBUTE_DIRECTORY))
{
LOG(LOG_LEVEL_WARNING, "clipboard_c2s_in_files: skipping "
"directory not supported [%s]", cfd.cFileName);
continue;
}
/* Have we already run out of room in the list? */
if (dropped_files > 0)
{
dropped_files += 1;
continue;
}
/* Room for this file? */
str_len = (ptr == file_list) ? 0 : 1; /* Delimiter */
str_len += g_strlen(fprefix); /* e.g. "file://" */
str_len += g_strlen(g_fuse_clipboard_path);
str_len += 1; /* '/' */
str_len += g_strlen(cfd.cFileName);
if (str_len > (last - ptr))
{
dropped_files += 1;
continue;
}
if (xfuse_add_clip_dir_item(cfd.cFileName, 0, cfd.fileSizeLow, lindex) == -1)
{
LOG(LOG_LEVEL_WARNING, "clipboard_c2s_in_files: "
"failed to add clip dir item %s", cfd.cFileName);
continue;
}
if (ptr > file_list)
{
*ptr++ = '\n';
}
str_len = g_strlen(fprefix);
g_strcpy(ptr, fprefix);
ptr += str_len;
str_len = g_strlen(g_fuse_clipboard_path);
g_strcpy(ptr, g_fuse_clipboard_path);
ptr += str_len;
*ptr++ = '/';
str_len = g_strlen(cfd.cFileName);
g_strcpy(ptr, cfd.cFileName);
ptr += str_len;
}
*ptr = '\0';
if (dropped_files > 0)
{
LOG(LOG_LEVEL_WARNING, "clipboard_c2s_in_files: "
"Dropped %d files from the clip buffer due to insufficient space",
dropped_files);
}
return 0;
}
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