trunk/rdesktop/disk.c

/* -*- c-basic-offset: 8 -*-
   rdesktop: A Remote Desktop Protocol client.
   Disk Redirection
   Copyright (C) Jeroen Meijer 2003

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#define FILE_ATTRIBUTE_READONLY                 0x00000001
#define FILE_ATTRIBUTE_HIDDEN                   0x00000002
#define FILE_ATTRIBUTE_SYSTEM                   0x00000004
#define FILE_ATTRIBUTE_DIRECTORY                0x00000010
#define FILE_ATTRIBUTE_ARCHIVE                  0x00000020
#define FILE_ATTRIBUTE_DEVICE                   0x00000040
#define FILE_ATTRIBUTE_NORMAL                   0x00000080
#define FILE_ATTRIBUTE_TEMPORARY                0x00000100
#define FILE_ATTRIBUTE_SPARSE_FILE              0x00000200
#define FILE_ATTRIBUTE_REPARSE_POINT            0x00000400
#define FILE_ATTRIBUTE_COMPRESSED               0x00000800
#define FILE_ATTRIBUTE_OFFLINE                  0x00001000
#define FILE_ATTRIBUTE_NOT_CONTENT_INDEXED      0x00002000
#define FILE_ATTRIBUTE_ENCRYPTED                0x00004000

#define FILE_BASIC_INFORMATION                  0x04
#define FILE_STANDARD_INFORMATION               0x05

#define FS_CASE_SENSITIVE                       0x00000001
#define FS_CASE_IS_PRESERVED                    0x00000002
#define FS_UNICODE_STORED_ON_DISK               0x00000004
#define FS_PERSISTENT_ACLS                      0x00000008
#define FS_FILE_COMPRESSION                     0x00000010
#define FS_VOLUME_QUOTAS                        0x00000020
#define FS_SUPPORTS_SPARSE_FILES                0x00000040
#define FS_SUPPORTS_REPARSE_POINTS              0x00000080
#define FS_SUPPORTS_REMOTE_STORAGE              0X00000100
#define FS_VOL_IS_COMPRESSED                    0x00008000
#define FILE_READ_ONLY_VOLUME                   0x00080000

#define OPEN_EXISTING                           1
#define CREATE_NEW                              2
#define OPEN_ALWAYS                             3
#define TRUNCATE_EXISTING                       4
#define CREATE_ALWAYS                           5

#define GENERIC_READ                            0x80000000
#define GENERIC_WRITE                           0x40000000
#define GENERIC_EXECUTE                         0x20000000
#define GENERIC_ALL                             0x10000000

#define ERROR_FILE_NOT_FOUND                    2L
#define ERROR_ALREADY_EXISTS                    183L

#define MAX_OPEN_FILES  0x100

#if (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
#define SOLARIS
#endif

#ifdef SOLARIS
#define DIRFD(a) ((a)->dd_fd)
#else
#define DIRFD(a) (dirfd(a))
#endif

#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>              /* open, close */
#include <dirent.h>             /* opendir, closedir, readdir */
#include <fnmatch.h>
#include <errno.h>              /* errno */

#if defined(SOLARIS)
#include <sys/statvfs.h>        /* solaris statvfs */
#define STATFS_FN(path, buf) (statvfs(path,buf))
#define STATFS_T statvfs
#define F_NAMELEN(buf) ((buf).f_namemax)

#elif (defined(__OpenBSD__) || defined(__NetBSD__) || defined(__FreeBSD__))
#include <sys/param.h>
#include <sys/mount.h>
#define STATFS_FN(path, buf) (statfs(path,buf))
#define STATFS_T statfs
#define F_NAMELEN(buf) (NAME_MAX)

#else
#include <sys/vfs.h>            /* linux statfs */
#define STATFS_FN(path, buf) (statfs(path,buf))
#define STATFS_T statfs
#define F_NAMELEN(buf) ((buf).f_namelen)
#endif

#include "rdesktop.h"

extern RDPDR_DEVICE g_rdpdr_device[];

struct fileinfo
{
        uint32 device_id, flags_and_attributes;
        char path[256];
        DIR *pdir;
        struct dirent *pdirent;
        char pattern[64];
        BOOL delete_on_close;
}
g_fileinfo[MAX_OPEN_FILES];

/* Convert seconds since 1970 to a filetime */
void
seconds_since_1970_to_filetime(time_t seconds, uint32 * high, uint32 * low)
{
        unsigned long long ticks;

        ticks = (seconds + 11644473600LL) * 10000000;
        *low = (uint32) ticks;
        *high = (uint32) (ticks >> 32);
}

/* Enumeration of devices from rdesktop.c        */
/* returns numer of units found and initialized. */
/* optarg looks like ':h:=/mnt/floppy,b:=/mnt/usbdevice1' */
/* when it arrives to this function.             */
int
disk_enum_devices(int *id, char *optarg)
{
        char *pos = optarg;
        char *pos2;
        int count = 0;

        // skip the first colon
        optarg++;
        while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES)
        {
                pos2 = next_arg(optarg, '=');
                strcpy(g_rdpdr_device[*id].name, optarg);

                toupper_str(g_rdpdr_device[*id].name);

                /* add trailing colon to name. */
                strcat(g_rdpdr_device[*id].name, ":");

                g_rdpdr_device[*id].local_path = xmalloc(strlen(pos2) + 1);
                strcpy(g_rdpdr_device[*id].local_path, pos2);
                printf("DISK %s to %s\n", g_rdpdr_device[*id].name, g_rdpdr_device[*id].local_path);
                g_rdpdr_device[*id].device_type = DEVICE_TYPE_DISK;
                count++;
                (*id)++;

                optarg = pos;
        }
        return count;
}

/* Opens or creates a file or directory */
NTSTATUS
disk_create(uint32 device_id, uint32 accessmask, uint32 sharemode, uint32 create_disposition,
            uint32 flags_and_attributes, char *filename, HANDLE * phandle)
{
        HANDLE handle;
        DIR *dirp;
        int flags, mode;
        char path[256];

        handle = 0;
        dirp = NULL;
        flags = 0;
        mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH;

        if (filename[strlen(filename) - 1] == '/')
                filename[strlen(filename) - 1] = 0;
        sprintf(path, "%s%s", g_rdpdr_device[device_id].local_path, filename);

        switch (create_disposition)
        {
                case CREATE_ALWAYS:

                        // Delete existing file/link.
                        unlink(path);
                        flags |= O_CREAT;
                        break;

                case CREATE_NEW:

                        // If the file already exists, then fail.
                        flags |= O_CREAT | O_EXCL;
                        break;

                case OPEN_ALWAYS:

                        // Create if not already exists.
                        flags |= O_CREAT;
                        break;

                case OPEN_EXISTING:

                        // Default behaviour
                        break;

                case TRUNCATE_EXISTING:

                        // If the file does not exist, then fail.
                        flags |= O_TRUNC;
                        break;
        }

        /* the sad part is that we can't trust this flag   */
        /* directories aren't always marked                */
        if (flags_and_attributes ^ FILE_DIRECTORY_FILE)
        {
                if (accessmask & GENERIC_ALL
                    || (accessmask & GENERIC_READ && accessmask & GENERIC_WRITE))
                {
                        flags |= O_RDWR;
                }
                else if ((accessmask & GENERIC_WRITE) && !(accessmask & GENERIC_READ))
                {
                        flags |= O_WRONLY;
                }
                else
                {
                        flags |= O_RDONLY;
                }

                handle = open(path, flags, mode);
                if (handle == -1)
                {
                        switch (errno)
                        {
                                case EACCES:

                                        return STATUS_ACCESS_DENIED;

                                case ENOENT:

                                        return STATUS_NO_SUCH_FILE;

                                default:

                                        perror("open");
                                        return STATUS_NO_SUCH_FILE;
                        }
                }

                /* all read and writes of files should be non blocking */
                if (fcntl(handle, F_SETFL, O_NONBLOCK) == -1)
                        perror("fcntl");
        }

        /* since we can't trust the FILE_DIRECTORY_FILE flag */
        /* we need to double check that the file isn't a dir */
        if (handle != 0)
        {
                /* Must check if this file isn't actually a directory */
                struct stat filestat;

                // Get information about file and set that flag ourselfs
                if ((fstat(handle, &filestat) == 0) && (S_ISDIR(filestat.st_mode)))
                {
                        flags_and_attributes |= FILE_DIRECTORY_FILE;
                        close(handle);
                        handle = 0;
                }
        }


        if (flags_and_attributes & FILE_DIRECTORY_FILE)
        {
                if (flags & O_CREAT)
                {
                        mkdir(path, mode);
                }

                dirp = opendir(path);
                if (!dirp)
                {
                        switch (errno)
                        {
                                case EACCES:

                                        return STATUS_ACCESS_DENIED;

                                case ENOENT:

                                        return STATUS_NO_SUCH_FILE;

                                default:

                                        perror("opendir");
                                        return STATUS_NO_SUCH_FILE;
                        }
                }
                handle = DIRFD(dirp);
        }

        if (handle >= MAX_OPEN_FILES)
        {
                error("Maximum number of open files (%s) reached. Increase MAX_OPEN_FILES!\n",
                      handle);
                exit(1);
        }

        if (dirp)
                g_fileinfo[handle].pdir = dirp;
        g_fileinfo[handle].device_id = device_id;
        g_fileinfo[handle].flags_and_attributes = flags_and_attributes;
//      printf("create: attrib: %u handle %u\n", g_fileinfo[handle].flags_and_attributes, handle );
        strncpy(g_fileinfo[handle].path, path, 255);

        *phandle = handle;
        return STATUS_SUCCESS;
}

NTSTATUS
disk_close(HANDLE handle)
{
        struct fileinfo *pfinfo;

        pfinfo = &(g_fileinfo[handle]);

        if (pfinfo->flags_and_attributes & FILE_DIRECTORY_FILE)
        {
                closedir(pfinfo->pdir);
                //FIXME: Should check exit code
        }
        else
        {
                close(handle);
        }

        return STATUS_SUCCESS;
}

NTSTATUS
disk_read(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
{
        int n;

        /* browsing dir ????        */
        /* each request is 24 bytes */
        if (g_fileinfo[handle].flags_and_attributes & FILE_DIRECTORY_FILE)
        {
                *result = 0;
                return STATUS_SUCCESS;
        }

        if (offset)
                lseek(handle, offset, SEEK_SET);
        n = read(handle, data, length);

        if (n < 0)
        {
                perror("read");
                *result = 0;
                return STATUS_INVALID_PARAMETER;
        }

        *result = n;

        return STATUS_SUCCESS;
}

NTSTATUS
disk_write(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
{
        int n;

        if (offset)
                lseek(handle, offset, SEEK_SET);

        n = write(handle, data, length);

        if (n < 0)
        {
                perror("write");
                *result = 0;
                return STATUS_ACCESS_DENIED;
        }

        *result = n;

        return STATUS_SUCCESS;
}

NTSTATUS
disk_query_information(HANDLE handle, uint32 info_class, STREAM out)
{
        uint32 file_attributes, ft_high, ft_low;
        struct stat filestat;
        char *path, *filename;

        path = g_fileinfo[handle].path;

        // Get information about file
        if (fstat(handle, &filestat) != 0)
        {
                perror("stat");
                out_uint8(out, 0);
                return STATUS_ACCESS_DENIED;
        }

        // Set file attributes
        file_attributes = 0;
        if (S_ISDIR(filestat.st_mode))
        {
                file_attributes |= FILE_ATTRIBUTE_DIRECTORY;
        }
        filename = 1 + strrchr(path, '/');
        if (filename && filename[0] == '.')
        {
                file_attributes |= FILE_ATTRIBUTE_HIDDEN;
        }

        // Return requested data
        switch (info_class)
        {
                case 4: /* FileBasicInformation */

                        out_uint8s(out, 8);     //create_time not available;

                        seconds_since_1970_to_filetime(filestat.st_atime, &ft_high, &ft_low);
                        out_uint32_le(out, ft_low);     //last_access_time
                        out_uint32_le(out, ft_high);

                        seconds_since_1970_to_filetime(filestat.st_mtime, &ft_high, &ft_low);
                        out_uint32_le(out, ft_low);     //last_write_time
                        out_uint32_le(out, ft_high);

                        out_uint8s(out, 8);     //unknown zero
                        out_uint32_le(out, file_attributes);
                        break;

                case 5: /* FileStandardInformation */

                        out_uint32_le(out, filestat.st_size);   //Allocation size
                        out_uint32_le(out, 0);
                        out_uint32_le(out, filestat.st_size);   //End of file
                        out_uint32_le(out, 0);
                        out_uint32_le(out, filestat.st_nlink);  //Number of links
                        out_uint8(out, 0);      //Delete pending
                        out_uint8(out, S_ISDIR(filestat.st_mode) ? 1 : 0);      //Directory
                        break;

                case 35:        /* FileObjectIdInformation */

                        out_uint32_le(out, file_attributes);    /* File Attributes */
                        out_uint32_le(out, 0);  /* Reparse Tag */
                        break;

                default:

                        unimpl("IRP Query (File) Information class: 0x%x\n", info_class);
                        return STATUS_INVALID_PARAMETER;
        }
        return STATUS_SUCCESS;
}

NTSTATUS
disk_set_information(HANDLE handle, uint32 info_class, STREAM in, STREAM out)
{
        uint32 device_id, length, file_attributes, ft_high, ft_low;
        char newname[256], fullpath[256];
        struct fileinfo *pfinfo;

        pfinfo = &(g_fileinfo[handle]);

        switch (info_class)
        {
                case 4: /* FileBasicInformation */

                        // Probably safe to ignore
                        break;

                case 10:        /* FileRenameInformation */

                        in_uint8s(in, 4);       /* Handle of root dir? */
                        in_uint8s(in, 0x1a);    /* unknown */
                        in_uint32_le(in, length);

                        if (length && (length / 2) < 256)
                        {
                                rdp_in_unistr(in, newname, length);
                                convert_to_unix_filename(newname);
                        }
                        else
                        {
                                return STATUS_INVALID_PARAMETER;
                        }

                        sprintf(fullpath, "%s%s", g_rdpdr_device[pfinfo->device_id].local_path,
                                newname);

                        if (rename(pfinfo->path, fullpath) != 0)
                        {
                                perror("rename");
                                return STATUS_ACCESS_DENIED;
                        }
                        break;

                case 13:        /* FileDispositionInformation */

                        //unimpl("IRP Set File Information class: FileDispositionInformation\n");
                        // in_uint32_le(in, delete_on_close);
                        // disk_close(handle);
                        unlink(pfinfo->path);
                        break;

                case 19:        /* FileAllocationInformation */

                        unimpl("IRP Set File Information class: FileAllocationInformation\n");
                        break;

                case 20:        /* FileEndOfFileInformation */

                        unimpl("IRP Set File Information class: FileEndOfFileInformation\n");
                        break;

                default:

                        unimpl("IRP Set File Information class: 0x%x\n", info_class);
                        return STATUS_INVALID_PARAMETER;
        }
        return STATUS_SUCCESS;
}

NTSTATUS
disk_query_volume_information(HANDLE handle, uint32 info_class, STREAM out)
{
        char *volume, *fs_type;
        struct STATFS_T stat_fs;
        struct fileinfo *pfinfo;

        pfinfo = &(g_fileinfo[handle]);
        volume = "RDESKTOP";
        fs_type = "RDPFS";

        if (STATFS_FN(pfinfo->path, &stat_fs) != 0)     /* FIXME: statfs is not portable */
        {
                perror("statfs");
                return STATUS_ACCESS_DENIED;
        }

        switch (info_class)
        {
                case 1: /* FileFsVolumeInformation */

                        out_uint32_le(out, 0);  /* volume creation time low */
                        out_uint32_le(out, 0);  /* volume creation time high */
                        out_uint32_le(out, 0);  /* serial */
                        out_uint32_le(out, 2 * strlen(volume)); /* length of string */
                        out_uint8(out, 0);      /* support objects? */
                        rdp_out_unistr(out, volume, 2 * strlen(volume) - 2);
                        break;

                case 3: /* FileFsSizeInformation */

                        out_uint32_le(out, stat_fs.f_blocks);   /* Total allocation units low */
                        out_uint32_le(out, 0);  /* Total allocation high units */
                        out_uint32_le(out, stat_fs.f_bfree);    /* Available allocation units */
                        out_uint32_le(out, 0);  /* Available allowcation units */
                        out_uint32_le(out, stat_fs.f_bsize / 0x200);    /* Sectors per allocation unit */
                        out_uint32_le(out, 0x200);      /* Bytes per sector */
                        break;

                case 5: /* FileFsAttributeInformation */

                        out_uint32_le(out, FS_CASE_SENSITIVE | FS_CASE_IS_PRESERVED);   /* fs attributes */
                        out_uint32_le(out, F_NAMELEN(stat_fs)); /* max length of filename */
                        out_uint32_le(out, 2 * strlen(fs_type));        /* length of fs_type */
                        rdp_out_unistr(out, fs_type, 2 * strlen(fs_type) - 2);
                        break;

                case 2: /* FileFsLabelInformation */
                case 4: /* FileFsDeviceInformation */
                case 6: /* FileFsControlInformation */
                case 7: /* FileFsFullSizeInformation */
                case 8: /* FileFsObjectIdInformation */
                case 9: /* FileFsMaximumInformation */
                default:

                        unimpl("IRP Query Volume Information class: 0x%x\n", info_class);
                        return STATUS_INVALID_PARAMETER;
        }
        return STATUS_SUCCESS;
}

NTSTATUS
disk_query_directory(HANDLE handle, uint32 info_class, char *pattern, STREAM out)
{
        uint32 file_attributes, ft_low, ft_high;
        char *dirname, fullpath[256];
        DIR *pdir;
        struct dirent *pdirent;
        struct stat fstat;
        struct fileinfo *pfinfo;

        pfinfo = &(g_fileinfo[handle]);
        pdir = pfinfo->pdir;
        dirname = pfinfo->path;
        file_attributes = 0;

        switch (info_class)
        {
                case 3: //FIXME: Why 3?

                        // If a search pattern is received, remember this pattern, and restart search
                        if (pattern[0] != 0)
                        {
                                strncpy(pfinfo->pattern, 1 + strrchr(pattern, '/'), 64);
                                rewinddir(pdir);
                        }

                        // find next dirent matching pattern
                        pdirent = readdir(pdir);
                        while (pdirent && fnmatch(pfinfo->pattern, pdirent->d_name, 0) != 0)
                        {
                                pdirent = readdir(pdir);
                        }

                        if (pdirent == NULL)
                        {
                                return STATUS_NO_MORE_FILES;
                        }

                        // Get information for directory entry
                        sprintf(fullpath, "%s/%s", dirname, pdirent->d_name);
                        /* JIF
                           printf("Stat: %s\n", fullpath); */
                        if (stat(fullpath, &fstat))
                        {
                                perror("stat");
                                out_uint8(out, 0);
                                return STATUS_ACCESS_DENIED;
                        }

                        if (S_ISDIR(fstat.st_mode))
                                file_attributes |= FILE_ATTRIBUTE_DIRECTORY;
                        if (pdirent->d_name[0] == '.')
                                file_attributes |= FILE_ATTRIBUTE_HIDDEN;

                        // Return requested information
                        out_uint8s(out, 8);     //unknown zero
                        out_uint8s(out, 8);     //create_time not available in posix;

                        seconds_since_1970_to_filetime(fstat.st_atime, &ft_high, &ft_low);
                        out_uint32_le(out, ft_low);     //last_access_time
                        out_uint32_le(out, ft_high);

                        seconds_since_1970_to_filetime(fstat.st_mtime, &ft_high, &ft_low);
                        out_uint32_le(out, ft_low);     //last_write_time
                        out_uint32_le(out, ft_high);

                        out_uint8s(out, 8);     //unknown zero
                        out_uint32_le(out, fstat.st_size);      //filesize low
                        out_uint32_le(out, 0);  //filesize high
                        out_uint32_le(out, fstat.st_size);      //filesize low
                        out_uint32_le(out, 0);  //filesize high
                        out_uint32_le(out, file_attributes);
                        out_uint8(out, 2 * strlen(pdirent->d_name) + 2);        //unicode length
                        out_uint8s(out, 7);     //pad?
                        out_uint8(out, 0);      //8.3 file length
                        out_uint8s(out, 2 * 12);        //8.3 unicode length
                        rdp_out_unistr(out, pdirent->d_name, 2 * strlen(pdirent->d_name));
                        break;

                default:

                        unimpl("IRP Query Directory sub: 0x%x\n", info_class);
                        return STATUS_INVALID_PARAMETER;
        }

        return STATUS_SUCCESS;
}

DEVICE_FNS disk_fns = {
        disk_create,
        disk_close,
        disk_read,
        disk_write,
        NULL                    /* device_control */
};
1	n-ki	569	/* -- c-basic-offset: 8 --
2			rdesktop: A Remote Desktop Protocol client.
3			Disk Redirection
4			Copyright (C) Jeroen Meijer 2003
5
6			This program is free software; you can redistribute it and/or modify
7			it under the terms of the GNU General Public License as published by
8			the Free Software Foundation; either version 2 of the License, or
9			(at your option) any later version.
10
11			This program is distributed in the hope that it will be useful,
12			but WITHOUT ANY WARRANTY; without even the implied warranty of
13			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			GNU General Public License for more details.
15
16			You should have received a copy of the GNU General Public License
17			along with this program; if not, write to the Free Software
18			Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19			*/
20
21			#define FILE_ATTRIBUTE_READONLY 0x00000001
22			#define FILE_ATTRIBUTE_HIDDEN 0x00000002
23			#define FILE_ATTRIBUTE_SYSTEM 0x00000004
24			#define FILE_ATTRIBUTE_DIRECTORY 0x00000010
25			#define FILE_ATTRIBUTE_ARCHIVE 0x00000020
26			#define FILE_ATTRIBUTE_DEVICE 0x00000040
27			#define FILE_ATTRIBUTE_NORMAL 0x00000080
28			#define FILE_ATTRIBUTE_TEMPORARY 0x00000100
29			#define FILE_ATTRIBUTE_SPARSE_FILE 0x00000200
30			#define FILE_ATTRIBUTE_REPARSE_POINT 0x00000400
31			#define FILE_ATTRIBUTE_COMPRESSED 0x00000800
32			#define FILE_ATTRIBUTE_OFFLINE 0x00001000
33			#define FILE_ATTRIBUTE_NOT_CONTENT_INDEXED 0x00002000
34			#define FILE_ATTRIBUTE_ENCRYPTED 0x00004000
35
36			#define FILE_BASIC_INFORMATION 0x04
37			#define FILE_STANDARD_INFORMATION 0x05
38
39			#define FS_CASE_SENSITIVE 0x00000001
40			#define FS_CASE_IS_PRESERVED 0x00000002
41			#define FS_UNICODE_STORED_ON_DISK 0x00000004
42			#define FS_PERSISTENT_ACLS 0x00000008
43			#define FS_FILE_COMPRESSION 0x00000010
44			#define FS_VOLUME_QUOTAS 0x00000020
45			#define FS_SUPPORTS_SPARSE_FILES 0x00000040
46			#define FS_SUPPORTS_REPARSE_POINTS 0x00000080
47			#define FS_SUPPORTS_REMOTE_STORAGE 0X00000100
48			#define FS_VOL_IS_COMPRESSED 0x00008000
49			#define FILE_READ_ONLY_VOLUME 0x00080000
50
51			#define OPEN_EXISTING 1
52			#define CREATE_NEW 2
53			#define OPEN_ALWAYS 3
54			#define TRUNCATE_EXISTING 4
55			#define CREATE_ALWAYS 5
56
57			#define GENERIC_READ 0x80000000
58			#define GENERIC_WRITE 0x40000000
59			#define GENERIC_EXECUTE 0x20000000
60			#define GENERIC_ALL 0x10000000
61
62			#define ERROR_FILE_NOT_FOUND 2L
63			#define ERROR_ALREADY_EXISTS 183L
64
65			#define MAX_OPEN_FILES 0x100
66
67	stargo	572	#if (defined(sun) && (defined(__svr4__) \|\| defined(__SVR4)))
68			#define SOLARIS
69			#endif
70
71			#ifdef SOLARIS
72			#define DIRFD(a) ((a)->dd_fd)
73			#else
74			#define DIRFD(a) (dirfd(a))
75			#endif
76
77	n-ki	569	#include <sys/types.h>
78			#include <sys/stat.h>
79			#include <unistd.h>
80			#include <fcntl.h> /* open, close */
81			#include <dirent.h> /* opendir, closedir, readdir */
82			#include <fnmatch.h>
83			#include <errno.h> /* errno */
84	stargo	572
85	stargo	573	#if defined(SOLARIS)
86	stargo	572	#include <sys/statvfs.h> /* solaris statvfs */
87	stargo	574	#define STATFS_FN(path, buf) (statvfs(path,buf))
88			#define STATFS_T statvfs
89	stargo	573	#define F_NAMELEN(buf) ((buf).f_namemax)
90
91	stargo	576	#elif (defined(__OpenBSD__) \|\| defined(__NetBSD__) \|\| defined(__FreeBSD__))
92	stargo	573	#include <sys/param.h>
93			#include <sys/mount.h>
94	stargo	574	#define STATFS_FN(path, buf) (statfs(path,buf))
95			#define STATFS_T statfs
96	stargo	573	#define F_NAMELEN(buf) (NAME_MAX)
97
98	stargo	572	#else
99			#include <sys/vfs.h> /* linux statfs */
100	stargo	574	#define STATFS_FN(path, buf) (statfs(path,buf))
101			#define STATFS_T statfs
102	stargo	573	#define F_NAMELEN(buf) ((buf).f_namelen)
103	stargo	572	#endif
104
105	n-ki	569	#include "rdesktop.h"
106
107			extern RDPDR_DEVICE g_rdpdr_device[];
108
109			struct fileinfo
110			{
111			uint32 device_id, flags_and_attributes;
112			char path[256];
113			DIR *pdir;
114			struct dirent *pdirent;
115			char pattern[64];
116			BOOL delete_on_close;
117			}
118			g_fileinfo[MAX_OPEN_FILES];
119
120			/* Convert seconds since 1970 to a filetime */
121			void
122			seconds_since_1970_to_filetime(time_t seconds, uint32 * high, uint32 * low)
123			{
124			unsigned long long ticks;
125
126			ticks = (seconds + 11644473600LL) * 10000000;
127			*low = (uint32) ticks;
128			*high = (uint32) (ticks >> 32);
129			}
130
131			/* Enumeration of devices from rdesktop.c */
132			/* returns numer of units found and initialized. */
133			/* optarg looks like ':h:=/mnt/floppy,b:=/mnt/usbdevice1' */
134			/* when it arrives to this function. */
135			int
136			disk_enum_devices(int id, char optarg)
137			{
138			char *pos = optarg;
139			char *pos2;
140			int count = 0;
141
142			// skip the first colon
143			optarg++;
144			while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES)
145			{
146			pos2 = next_arg(optarg, '=');
147			strcpy(g_rdpdr_device[*id].name, optarg);
148
149	stargo	570	toupper_str(g_rdpdr_device[*id].name);
150	n-ki	569
151			/* add trailing colon to name. */
152			strcat(g_rdpdr_device[*id].name, ":");
153
154			g_rdpdr_device[*id].local_path = xmalloc(strlen(pos2) + 1);
155			strcpy(g_rdpdr_device[*id].local_path, pos2);
156			printf("DISK %s to %s\n", g_rdpdr_device[id].name, g_rdpdr_device[id].local_path);
157			g_rdpdr_device[*id].device_type = DEVICE_TYPE_DISK;
158			count++;
159			(*id)++;
160
161			optarg = pos;
162			}
163			return count;
164			}
165
166	n-ki	596	/* Opens or creates a file or directory */
167	n-ki	569	NTSTATUS
168			disk_create(uint32 device_id, uint32 accessmask, uint32 sharemode, uint32 create_disposition,
169			uint32 flags_and_attributes, char filename, HANDLE phandle)
170			{
171			HANDLE handle;
172			DIR *dirp;
173			int flags, mode;
174			char path[256];
175
176			handle = 0;
177			dirp = NULL;
178			flags = 0;
179			mode = S_IRWXU \| S_IRGRP \| S_IXGRP \| S_IROTH \| S_IXOTH;
180
181			if (filename[strlen(filename) - 1] == '/')
182			filename[strlen(filename) - 1] = 0;
183			sprintf(path, "%s%s", g_rdpdr_device[device_id].local_path, filename);
184
185			switch (create_disposition)
186			{
187			case CREATE_ALWAYS:
188
189			// Delete existing file/link.
190			unlink(path);
191			flags \|= O_CREAT;
192			break;
193
194			case CREATE_NEW:
195
196			// If the file already exists, then fail.
197			flags \|= O_CREAT \| O_EXCL;
198			break;
199
200			case OPEN_ALWAYS:
201
202			// Create if not already exists.
203			flags \|= O_CREAT;
204			break;
205
206			case OPEN_EXISTING:
207
208			// Default behaviour
209			break;
210
211			case TRUNCATE_EXISTING:
212
213			// If the file does not exist, then fail.
214			flags \|= O_TRUNC;
215			break;
216			}
217
218	n-ki	596	/* the sad part is that we can't trust this flag */
219			/* directories aren't always marked */
220			if (flags_and_attributes ^ FILE_DIRECTORY_FILE)
221	n-ki	569	{
222	n-ki	596	if (accessmask & GENERIC_ALL
223			\|\| (accessmask & GENERIC_READ && accessmask & GENERIC_WRITE))
224	n-ki	569	{
225	n-ki	596	flags \|= O_RDWR;
226	n-ki	569	}
227	n-ki	596	else if ((accessmask & GENERIC_WRITE) && !(accessmask & GENERIC_READ))
228			{
229			flags \|= O_WRONLY;
230			}
231			else
232			{
233			flags \|= O_RDONLY;
234			}
235	n-ki	569
236	n-ki	596	handle = open(path, flags, mode);
237			if (handle == -1)
238	n-ki	569	{
239			switch (errno)
240			{
241			case EACCES:
242
243			return STATUS_ACCESS_DENIED;
244
245			case ENOENT:
246
247			return STATUS_NO_SUCH_FILE;
248
249			default:
250
251	n-ki	596	perror("open");
252	n-ki	569	return STATUS_NO_SUCH_FILE;
253			}
254			}
255	n-ki	596
256			/* all read and writes of files should be non blocking */
257			if (fcntl(handle, F_SETFL, O_NONBLOCK) == -1)
258			perror("fcntl");
259	n-ki	569	}
260	n-ki	596
261			/* since we can't trust the FILE_DIRECTORY_FILE flag */
262			/* we need to double check that the file isn't a dir */
263			if (handle != 0)
264	n-ki	569	{
265	n-ki	596	/* Must check if this file isn't actually a directory */
266			struct stat filestat;
267
268			// Get information about file and set that flag ourselfs
269			if ((fstat(handle, &filestat) == 0) && (S_ISDIR(filestat.st_mode)))
270	n-ki	569	{
271	n-ki	596	flags_and_attributes \|= FILE_DIRECTORY_FILE;
272			close(handle);
273			handle = 0;
274	n-ki	569	}
275	n-ki	596	}
276
277
278			if (flags_and_attributes & FILE_DIRECTORY_FILE)
279			{
280			if (flags & O_CREAT)
281	n-ki	569	{
282	n-ki	596	mkdir(path, mode);
283	n-ki	569	}
284
285	n-ki	596	dirp = opendir(path);
286			if (!dirp)
287	n-ki	569	{
288			switch (errno)
289			{
290			case EACCES:
291
292			return STATUS_ACCESS_DENIED;
293
294			case ENOENT:
295
296			return STATUS_NO_SUCH_FILE;
297
298			default:
299
300	n-ki	596	perror("opendir");
301	n-ki	569	return STATUS_NO_SUCH_FILE;
302			}
303			}
304	n-ki	596	handle = DIRFD(dirp);
305	n-ki	569	}
306
307			if (handle >= MAX_OPEN_FILES)
308			{
309			error("Maximum number of open files (%s) reached. Increase MAX_OPEN_FILES!\n",
310			handle);
311			exit(1);
312			}
313
314			if (dirp)
315			g_fileinfo[handle].pdir = dirp;
316			g_fileinfo[handle].device_id = device_id;
317			g_fileinfo[handle].flags_and_attributes = flags_and_attributes;
318	n-ki	596	// printf("create: attrib: %u handle %u\n", g_fileinfo[handle].flags_and_attributes, handle );
319	n-ki	569	strncpy(g_fileinfo[handle].path, path, 255);
320
321			*phandle = handle;
322			return STATUS_SUCCESS;
323			}
324
325			NTSTATUS
326			disk_close(HANDLE handle)
327			{
328			struct fileinfo *pfinfo;
329
330			pfinfo = &(g_fileinfo[handle]);
331
332			if (pfinfo->flags_and_attributes & FILE_DIRECTORY_FILE)
333			{
334			closedir(pfinfo->pdir);
335			//FIXME: Should check exit code
336			}
337			else
338			{
339			close(handle);
340			}
341
342			return STATUS_SUCCESS;
343			}
344
345			NTSTATUS
346			disk_read(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
347			{
348			int n;
349
350	n-ki	596	/* browsing dir ???? */
351			/* each request is 24 bytes */
352			if (g_fileinfo[handle].flags_and_attributes & FILE_DIRECTORY_FILE)
353			{
354			*result = 0;
355			return STATUS_SUCCESS;
356			}
357
358	n-ki	569	if (offset)
359			lseek(handle, offset, SEEK_SET);
360			n = read(handle, data, length);
361
362			if (n < 0)
363			{
364			perror("read");
365			*result = 0;
366			return STATUS_INVALID_PARAMETER;
367			}
368
369			*result = n;
370
371			return STATUS_SUCCESS;
372			}
373
374			NTSTATUS
375			disk_write(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
376			{
377			int n;
378
379			if (offset)
380			lseek(handle, offset, SEEK_SET);
381
382			n = write(handle, data, length);
383
384			if (n < 0)
385			{
386			perror("write");
387			*result = 0;
388			return STATUS_ACCESS_DENIED;
389			}
390
391			*result = n;
392
393			return STATUS_SUCCESS;
394			}
395
396			NTSTATUS
397			disk_query_information(HANDLE handle, uint32 info_class, STREAM out)
398			{
399			uint32 file_attributes, ft_high, ft_low;
400			struct stat filestat;
401			char path, filename;
402
403			path = g_fileinfo[handle].path;
404
405			// Get information about file
406			if (fstat(handle, &filestat) != 0)
407			{
408			perror("stat");
409			out_uint8(out, 0);
410			return STATUS_ACCESS_DENIED;
411			}
412
413			// Set file attributes
414			file_attributes = 0;
415			if (S_ISDIR(filestat.st_mode))
416			{
417			file_attributes \|= FILE_ATTRIBUTE_DIRECTORY;
418			}
419			filename = 1 + strrchr(path, '/');
420			if (filename && filename[0] == '.')
421			{
422			file_attributes \|= FILE_ATTRIBUTE_HIDDEN;
423			}
424
425			// Return requested data
426			switch (info_class)
427			{
428			case 4: /* FileBasicInformation */
429
430			out_uint8s(out, 8); //create_time not available;
431
432			seconds_since_1970_to_filetime(filestat.st_atime, &ft_high, &ft_low);
433			out_uint32_le(out, ft_low); //last_access_time
434			out_uint32_le(out, ft_high);
435
436			seconds_since_1970_to_filetime(filestat.st_mtime, &ft_high, &ft_low);
437			out_uint32_le(out, ft_low); //last_write_time
438			out_uint32_le(out, ft_high);
439
440			out_uint8s(out, 8); //unknown zero
441			out_uint32_le(out, file_attributes);
442			break;
443
444			case 5: /* FileStandardInformation */
445
446			out_uint32_le(out, filestat.st_size); //Allocation size
447			out_uint32_le(out, 0);
448			out_uint32_le(out, filestat.st_size); //End of file
449			out_uint32_le(out, 0);
450			out_uint32_le(out, filestat.st_nlink); //Number of links
451			out_uint8(out, 0); //Delete pending
452			out_uint8(out, S_ISDIR(filestat.st_mode) ? 1 : 0); //Directory
453			break;
454
455			case 35: /* FileObjectIdInformation */
456
457			out_uint32_le(out, file_attributes); /* File Attributes */
458			out_uint32_le(out, 0); /* Reparse Tag */
459			break;
460
461			default:
462
463			unimpl("IRP Query (File) Information class: 0x%x\n", info_class);
464			return STATUS_INVALID_PARAMETER;
465			}
466			return STATUS_SUCCESS;
467			}
468
469			NTSTATUS
470			disk_set_information(HANDLE handle, uint32 info_class, STREAM in, STREAM out)
471			{
472			uint32 device_id, length, file_attributes, ft_high, ft_low;
473			char newname[256], fullpath[256];
474			struct fileinfo *pfinfo;
475
476			pfinfo = &(g_fileinfo[handle]);
477
478			switch (info_class)
479			{
480			case 4: /* FileBasicInformation */
481
482			// Probably safe to ignore
483			break;
484
485			case 10: /* FileRenameInformation */
486
487			in_uint8s(in, 4); /* Handle of root dir? */
488			in_uint8s(in, 0x1a); /* unknown */
489			in_uint32_le(in, length);
490
491			if (length && (length / 2) < 256)
492			{
493			rdp_in_unistr(in, newname, length);
494			convert_to_unix_filename(newname);
495			}
496			else
497			{
498			return STATUS_INVALID_PARAMETER;
499			}
500
501			sprintf(fullpath, "%s%s", g_rdpdr_device[pfinfo->device_id].local_path,
502			newname);
503
504			if (rename(pfinfo->path, fullpath) != 0)
505			{
506			perror("rename");
507			return STATUS_ACCESS_DENIED;
508			}
509			break;
510
511			case 13: /* FileDispositionInformation */
512
513			//unimpl("IRP Set File Information class: FileDispositionInformation\n");
514			// in_uint32_le(in, delete_on_close);
515			// disk_close(handle);
516			unlink(pfinfo->path);
517			break;
518
519			case 19: /* FileAllocationInformation */
520
521			unimpl("IRP Set File Information class: FileAllocationInformation\n");
522			break;
523
524			case 20: /* FileEndOfFileInformation */
525
526			unimpl("IRP Set File Information class: FileEndOfFileInformation\n");
527			break;
528
529			default:
530
531			unimpl("IRP Set File Information class: 0x%x\n", info_class);
532			return STATUS_INVALID_PARAMETER;
533			}
534			return STATUS_SUCCESS;
535			}
536
537			NTSTATUS
538			disk_query_volume_information(HANDLE handle, uint32 info_class, STREAM out)
539			{
540			char volume, fs_type;
541	stargo	574	struct STATFS_T stat_fs;
542	n-ki	569	struct fileinfo *pfinfo;
543
544			pfinfo = &(g_fileinfo[handle]);
545			volume = "RDESKTOP";
546			fs_type = "RDPFS";
547
548	stargo	574	if (STATFS_FN(pfinfo->path, &stat_fs) != 0) /* FIXME: statfs is not portable */
549	n-ki	569	{
550			perror("statfs");
551			return STATUS_ACCESS_DENIED;
552			}
553
554			switch (info_class)
555			{
556			case 1: /* FileFsVolumeInformation */
557
558			out_uint32_le(out, 0); /* volume creation time low */
559			out_uint32_le(out, 0); /* volume creation time high */
560			out_uint32_le(out, 0); /* serial */
561			out_uint32_le(out, 2 * strlen(volume)); /* length of string */
562			out_uint8(out, 0); /* support objects? */
563			rdp_out_unistr(out, volume, 2 * strlen(volume) - 2);
564			break;
565
566			case 3: /* FileFsSizeInformation */
567
568			out_uint32_le(out, stat_fs.f_blocks); /* Total allocation units low */
569			out_uint32_le(out, 0); /* Total allocation high units */
570			out_uint32_le(out, stat_fs.f_bfree); /* Available allocation units */
571			out_uint32_le(out, 0); /* Available allowcation units */
572			out_uint32_le(out, stat_fs.f_bsize / 0x200); /* Sectors per allocation unit */
573			out_uint32_le(out, 0x200); /* Bytes per sector */
574			break;
575
576			case 5: /* FileFsAttributeInformation */
577
578			out_uint32_le(out, FS_CASE_SENSITIVE \| FS_CASE_IS_PRESERVED); /* fs attributes */
579	stargo	574	out_uint32_le(out, F_NAMELEN(stat_fs)); /* max length of filename */
580	n-ki	569	out_uint32_le(out, 2 * strlen(fs_type)); /* length of fs_type */
581			rdp_out_unistr(out, fs_type, 2 * strlen(fs_type) - 2);
582			break;
583
584			case 2: /* FileFsLabelInformation */
585			case 4: /* FileFsDeviceInformation */
586			case 6: /* FileFsControlInformation */
587			case 7: /* FileFsFullSizeInformation */
588			case 8: /* FileFsObjectIdInformation */
589			case 9: /* FileFsMaximumInformation */
590			default:
591
592			unimpl("IRP Query Volume Information class: 0x%x\n", info_class);
593			return STATUS_INVALID_PARAMETER;
594			}
595			return STATUS_SUCCESS;
596			}
597
598			NTSTATUS
599			disk_query_directory(HANDLE handle, uint32 info_class, char *pattern, STREAM out)
600			{
601			uint32 file_attributes, ft_low, ft_high;
602			char *dirname, fullpath[256];
603			DIR *pdir;
604			struct dirent *pdirent;
605			struct stat fstat;
606			struct fileinfo *pfinfo;
607
608			pfinfo = &(g_fileinfo[handle]);
609			pdir = pfinfo->pdir;
610			dirname = pfinfo->path;
611			file_attributes = 0;
612
613			switch (info_class)
614			{
615			case 3: //FIXME: Why 3?
616
617			// If a search pattern is received, remember this pattern, and restart search
618			if (pattern[0] != 0)
619			{
620			strncpy(pfinfo->pattern, 1 + strrchr(pattern, '/'), 64);
621			rewinddir(pdir);
622			}
623
624			// find next dirent matching pattern
625			pdirent = readdir(pdir);
626			while (pdirent && fnmatch(pfinfo->pattern, pdirent->d_name, 0) != 0)
627			{
628			pdirent = readdir(pdir);
629			}
630
631			if (pdirent == NULL)
632			{
633			return STATUS_NO_MORE_FILES;
634			}
635
636			// Get information for directory entry
637			sprintf(fullpath, "%s/%s", dirname, pdirent->d_name);
638	n-ki	596	/* JIF
639	n-ki	569	printf("Stat: %s\n", fullpath); */
640			if (stat(fullpath, &fstat))
641			{
642			perror("stat");
643			out_uint8(out, 0);
644			return STATUS_ACCESS_DENIED;
645			}
646
647			if (S_ISDIR(fstat.st_mode))
648			file_attributes \|= FILE_ATTRIBUTE_DIRECTORY;
649			if (pdirent->d_name[0] == '.')
650			file_attributes \|= FILE_ATTRIBUTE_HIDDEN;
651
652			// Return requested information
653			out_uint8s(out, 8); //unknown zero
654			out_uint8s(out, 8); //create_time not available in posix;
655
656			seconds_since_1970_to_filetime(fstat.st_atime, &ft_high, &ft_low);
657			out_uint32_le(out, ft_low); //last_access_time
658			out_uint32_le(out, ft_high);
659
660			seconds_since_1970_to_filetime(fstat.st_mtime, &ft_high, &ft_low);
661			out_uint32_le(out, ft_low); //last_write_time
662			out_uint32_le(out, ft_high);
663
664			out_uint8s(out, 8); //unknown zero
665			out_uint32_le(out, fstat.st_size); //filesize low
666			out_uint32_le(out, 0); //filesize high
667			out_uint32_le(out, fstat.st_size); //filesize low
668			out_uint32_le(out, 0); //filesize high
669			out_uint32_le(out, file_attributes);
670			out_uint8(out, 2 * strlen(pdirent->d_name) + 2); //unicode length
671			out_uint8s(out, 7); //pad?
672			out_uint8(out, 0); //8.3 file length
673			out_uint8s(out, 2 * 12); //8.3 unicode length
674			rdp_out_unistr(out, pdirent->d_name, 2 * strlen(pdirent->d_name));
675			break;
676
677			default:
678
679			unimpl("IRP Query Directory sub: 0x%x\n", info_class);
680			return STATUS_INVALID_PARAMETER;
681			}
682
683			return STATUS_SUCCESS;
684			}
685
686			DEVICE_FNS disk_fns = {
687			disk_create,
688			disk_close,
689			disk_read,
690			disk_write,
691			NULL /* device_control */
692			};