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/* -*- c-basic-offset: 8 -*- |
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rdesktop: A Remote Desktop Protocol client. |
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Copyright (C) Matthew Chapman 1999-2004 |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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|
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/* |
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Here are some resources, for your IRP hacking pleasure: |
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|
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http://cvs.sourceforge.net/viewcvs.py/mingw/w32api/include/ddk/winddk.h?view=markup |
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|
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http://win32.mvps.org/ntfs/streams.cpp |
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|
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http://www.acc.umu.se/~bosse/ntifs.h |
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|
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http://undocumented.ntinternals.net/UserMode/Undocumented%20Functions/NT%20Objects/File/ |
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|
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http://us1.samba.org/samba/ftp/specs/smb-nt01.txt |
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|
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http://www.osronline.com/ |
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*/ |
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|
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#include <unistd.h> |
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#include <sys/types.h> |
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#include <sys/time.h> |
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#include <dirent.h> /* opendir, closedir, readdir */ |
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#include <time.h> |
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#include "rdesktop.h" |
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|
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#define IRP_MJ_CREATE 0x00 |
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#define IRP_MJ_CLOSE 0x02 |
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#define IRP_MJ_READ 0x03 |
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#define IRP_MJ_WRITE 0x04 |
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#define IRP_MJ_QUERY_INFORMATION 0x05 |
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#define IRP_MJ_SET_INFORMATION 0x06 |
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#define IRP_MJ_QUERY_VOLUME_INFORMATION 0x0a |
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#define IRP_MJ_DIRECTORY_CONTROL 0x0c |
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#define IRP_MJ_DEVICE_CONTROL 0x0e |
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#define IRP_MJ_LOCK_CONTROL 0x11 |
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|
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#define IRP_MN_QUERY_DIRECTORY 0x01 |
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#define IRP_MN_NOTIFY_CHANGE_DIRECTORY 0x02 |
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|
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extern char hostname[16]; |
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extern DEVICE_FNS serial_fns; |
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extern DEVICE_FNS printer_fns; |
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extern DEVICE_FNS parallel_fns; |
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extern DEVICE_FNS disk_fns; |
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extern FILEINFO g_fileinfo[]; |
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|
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static VCHANNEL *rdpdr_channel; |
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|
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/* If select() times out, the request for the device with handle g_min_timeout_fd is aborted */ |
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HANDLE g_min_timeout_fd; |
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uint32 g_num_devices; |
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|
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/* Table with information about rdpdr devices */ |
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RDPDR_DEVICE g_rdpdr_device[RDPDR_MAX_DEVICES]; |
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char *g_rdpdr_clientname = NULL; |
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|
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/* Used to store incoming io request, until they are ready to be completed */ |
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/* using a linked list ensures that they are processed in the right order, */ |
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/* if multiple ios are being done on the same fd */ |
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struct async_iorequest |
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{ |
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uint32 fd, major, minor, offset, device, id, length, partial_len; |
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long timeout, /* Total timeout */ |
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itv_timeout; /* Interval timeout (between serial characters) */ |
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uint8 *buffer; |
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DEVICE_FNS *fns; |
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|
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struct async_iorequest *next; /* next element in list */ |
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}; |
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|
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struct async_iorequest *g_iorequest; |
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|
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/* Return device_id for a given handle */ |
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int |
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get_device_index(HANDLE handle) |
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{ |
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int i; |
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for (i = 0; i < RDPDR_MAX_DEVICES; i++) |
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{ |
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if (g_rdpdr_device[i].handle == handle) |
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return i; |
99 |
} |
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return -1; |
101 |
} |
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|
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/* Converts a windows path to a unix path */ |
104 |
void |
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convert_to_unix_filename(char *filename) |
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{ |
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char *p; |
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|
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while ((p = strchr(filename, '\\'))) |
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{ |
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*p = '/'; |
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} |
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} |
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|
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static BOOL |
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rdpdr_handle_ok(int device, int handle) |
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{ |
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switch (g_rdpdr_device[device].device_type) |
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{ |
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case DEVICE_TYPE_PARALLEL: |
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case DEVICE_TYPE_SERIAL: |
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case DEVICE_TYPE_PRINTER: |
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case DEVICE_TYPE_SCARD: |
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if (g_rdpdr_device[device].handle != handle) |
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return False; |
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break; |
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case DEVICE_TYPE_DISK: |
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if (g_fileinfo[handle].device_id != device) |
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return False; |
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break; |
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} |
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return True; |
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} |
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|
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/* Add a new io request to the table containing pending io requests so it won't block rdesktop */ |
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static BOOL |
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add_async_iorequest(uint32 device, uint32 file, uint32 id, uint32 major, uint32 length, |
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DEVICE_FNS * fns, uint32 total_timeout, uint32 interval_timeout, uint8 * buffer, |
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uint32 offset) |
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{ |
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struct async_iorequest *iorq; |
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|
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if (g_iorequest == NULL) |
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{ |
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g_iorequest = (struct async_iorequest *) xmalloc(sizeof(struct async_iorequest)); |
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if (!g_iorequest) |
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return False; |
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g_iorequest->fd = 0; |
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g_iorequest->next = NULL; |
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} |
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|
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iorq = g_iorequest; |
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|
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while (iorq->fd != 0) |
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{ |
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// create new element if needed |
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if (iorq->next == NULL) |
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{ |
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iorq->next = |
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(struct async_iorequest *) xmalloc(sizeof(struct async_iorequest)); |
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if (!iorq->next) |
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return False; |
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iorq->next->fd = 0; |
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iorq->next->next = NULL; |
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} |
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iorq = iorq->next; |
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} |
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iorq->device = device; |
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iorq->fd = file; |
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iorq->id = id; |
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iorq->major = major; |
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iorq->length = length; |
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iorq->partial_len = 0; |
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iorq->fns = fns; |
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iorq->timeout = total_timeout; |
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iorq->itv_timeout = interval_timeout; |
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iorq->buffer = buffer; |
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iorq->offset = offset; |
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return True; |
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} |
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|
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static void |
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rdpdr_send_connect(void) |
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{ |
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uint8 magic[4] = "rDCC"; |
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STREAM s; |
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|
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s = channel_init(rdpdr_channel, 12); |
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out_uint8a(s, magic, 4); |
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out_uint16_le(s, 1); /* unknown */ |
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out_uint16_le(s, 5); |
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out_uint32_be(s, 0x815ed39d); /* IP address (use 127.0.0.1) 0x815ed39d */ |
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s_mark_end(s); |
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channel_send(s, rdpdr_channel); |
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} |
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|
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|
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static void |
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rdpdr_send_name(void) |
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{ |
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uint8 magic[4] = "rDNC"; |
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STREAM s; |
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uint32 hostlen; |
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|
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if (NULL == g_rdpdr_clientname) |
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{ |
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g_rdpdr_clientname = hostname; |
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} |
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hostlen = (strlen(g_rdpdr_clientname) + 1) * 2; |
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|
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s = channel_init(rdpdr_channel, 16 + hostlen); |
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out_uint8a(s, magic, 4); |
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out_uint16_le(s, 0x63); /* unknown */ |
214 |
out_uint16_le(s, 0x72); |
215 |
out_uint32(s, 0); |
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out_uint32_le(s, hostlen); |
217 |
rdp_out_unistr(s, g_rdpdr_clientname, hostlen - 2); |
218 |
s_mark_end(s); |
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channel_send(s, rdpdr_channel); |
220 |
} |
221 |
|
222 |
/* Returns the size of the payload of the announce packet */ |
223 |
static int |
224 |
announcedata_size() |
225 |
{ |
226 |
int size, i; |
227 |
PRINTER *printerinfo; |
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|
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size = 8; //static announce size |
230 |
size += g_num_devices * 0x14; |
231 |
|
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for (i = 0; i < g_num_devices; i++) |
233 |
{ |
234 |
if (g_rdpdr_device[i].device_type == DEVICE_TYPE_PRINTER) |
235 |
{ |
236 |
printerinfo = (PRINTER *) g_rdpdr_device[i].pdevice_data; |
237 |
printerinfo->bloblen = |
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printercache_load_blob(printerinfo->printer, &(printerinfo->blob)); |
239 |
|
240 |
size += 0x18; |
241 |
size += 2 * strlen(printerinfo->driver) + 2; |
242 |
size += 2 * strlen(printerinfo->printer) + 2; |
243 |
size += printerinfo->bloblen; |
244 |
} |
245 |
} |
246 |
|
247 |
return size; |
248 |
} |
249 |
|
250 |
static void |
251 |
rdpdr_send_available(void) |
252 |
{ |
253 |
|
254 |
uint8 magic[4] = "rDAD"; |
255 |
uint32 driverlen, printerlen, bloblen; |
256 |
int i; |
257 |
STREAM s; |
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PRINTER *printerinfo; |
259 |
|
260 |
s = channel_init(rdpdr_channel, announcedata_size()); |
261 |
out_uint8a(s, magic, 4); |
262 |
out_uint32_le(s, g_num_devices); |
263 |
|
264 |
for (i = 0; i < g_num_devices; i++) |
265 |
{ |
266 |
out_uint32_le(s, g_rdpdr_device[i].device_type); |
267 |
out_uint32_le(s, i); /* RDP Device ID */ |
268 |
out_uint8p(s, g_rdpdr_device[i].name, 8); |
269 |
|
270 |
switch (g_rdpdr_device[i].device_type) |
271 |
{ |
272 |
case DEVICE_TYPE_PRINTER: |
273 |
printerinfo = (PRINTER *) g_rdpdr_device[i].pdevice_data; |
274 |
|
275 |
driverlen = 2 * strlen(printerinfo->driver) + 2; |
276 |
printerlen = 2 * strlen(printerinfo->printer) + 2; |
277 |
bloblen = printerinfo->bloblen; |
278 |
|
279 |
out_uint32_le(s, 24 + driverlen + printerlen + bloblen); /* length of extra info */ |
280 |
out_uint32_le(s, printerinfo->default_printer ? 2 : 0); |
281 |
out_uint8s(s, 8); /* unknown */ |
282 |
out_uint32_le(s, driverlen); |
283 |
out_uint32_le(s, printerlen); |
284 |
out_uint32_le(s, bloblen); |
285 |
rdp_out_unistr(s, printerinfo->driver, driverlen - 2); |
286 |
rdp_out_unistr(s, printerinfo->printer, printerlen - 2); |
287 |
out_uint8a(s, printerinfo->blob, bloblen); |
288 |
|
289 |
if (printerinfo->blob) |
290 |
xfree(printerinfo->blob); /* Blob is sent twice if reconnecting */ |
291 |
break; |
292 |
default: |
293 |
out_uint32(s, 0); |
294 |
} |
295 |
} |
296 |
#if 0 |
297 |
out_uint32_le(s, 0x20); /* Device type 0x20 - smart card */ |
298 |
out_uint32_le(s, 0); |
299 |
out_uint8p(s, "SCARD", 5); |
300 |
out_uint8s(s, 3); |
301 |
out_uint32(s, 0); |
302 |
#endif |
303 |
|
304 |
s_mark_end(s); |
305 |
channel_send(s, rdpdr_channel); |
306 |
} |
307 |
|
308 |
static void |
309 |
rdpdr_send_completion(uint32 device, uint32 id, uint32 status, uint32 result, uint8 * buffer, |
310 |
uint32 length) |
311 |
{ |
312 |
uint8 magic[4] = "rDCI"; |
313 |
STREAM s; |
314 |
|
315 |
s = channel_init(rdpdr_channel, 20 + length); |
316 |
out_uint8a(s, magic, 4); |
317 |
out_uint32_le(s, device); |
318 |
out_uint32_le(s, id); |
319 |
out_uint32_le(s, status); |
320 |
out_uint32_le(s, result); |
321 |
out_uint8p(s, buffer, length); |
322 |
s_mark_end(s); |
323 |
/* JIF |
324 |
hexdump(s->channel_hdr + 8, s->end - s->channel_hdr - 8); */ |
325 |
channel_send(s, rdpdr_channel); |
326 |
} |
327 |
|
328 |
static void |
329 |
rdpdr_process_irp(STREAM s) |
330 |
{ |
331 |
uint32 result = 0, |
332 |
length = 0, |
333 |
desired_access = 0, |
334 |
request, |
335 |
file, |
336 |
info_level, |
337 |
buffer_len, |
338 |
id, |
339 |
major, |
340 |
minor, |
341 |
device, |
342 |
offset, |
343 |
bytes_in, |
344 |
bytes_out, |
345 |
error_mode, |
346 |
share_mode, disposition, total_timeout, interval_timeout, flags_and_attributes = 0; |
347 |
|
348 |
char filename[256]; |
349 |
uint8 *buffer, *pst_buf; |
350 |
struct stream out; |
351 |
DEVICE_FNS *fns; |
352 |
BOOL rw_blocking = True; |
353 |
NTSTATUS status = STATUS_INVALID_DEVICE_REQUEST; |
354 |
|
355 |
in_uint32_le(s, device); |
356 |
in_uint32_le(s, file); |
357 |
in_uint32_le(s, id); |
358 |
in_uint32_le(s, major); |
359 |
in_uint32_le(s, minor); |
360 |
|
361 |
buffer_len = 0; |
362 |
buffer = (uint8 *) xmalloc(1024); |
363 |
buffer[0] = 0; |
364 |
|
365 |
switch (g_rdpdr_device[device].device_type) |
366 |
{ |
367 |
case DEVICE_TYPE_SERIAL: |
368 |
|
369 |
fns = &serial_fns; |
370 |
rw_blocking = False; |
371 |
break; |
372 |
|
373 |
case DEVICE_TYPE_PARALLEL: |
374 |
|
375 |
fns = ¶llel_fns; |
376 |
rw_blocking = False; |
377 |
break; |
378 |
|
379 |
case DEVICE_TYPE_PRINTER: |
380 |
|
381 |
fns = &printer_fns; |
382 |
break; |
383 |
|
384 |
case DEVICE_TYPE_DISK: |
385 |
|
386 |
fns = &disk_fns; |
387 |
rw_blocking = False; |
388 |
break; |
389 |
|
390 |
case DEVICE_TYPE_SCARD: |
391 |
default: |
392 |
|
393 |
error("IRP for bad device %ld\n", device); |
394 |
return; |
395 |
} |
396 |
|
397 |
switch (major) |
398 |
{ |
399 |
case IRP_MJ_CREATE: |
400 |
|
401 |
in_uint32_be(s, desired_access); |
402 |
in_uint8s(s, 0x08); // unknown |
403 |
in_uint32_le(s, error_mode); |
404 |
in_uint32_le(s, share_mode); |
405 |
in_uint32_le(s, disposition); |
406 |
in_uint32_le(s, flags_and_attributes); |
407 |
in_uint32_le(s, length); |
408 |
|
409 |
if (length && (length / 2) < 256) |
410 |
{ |
411 |
rdp_in_unistr(s, filename, length); |
412 |
convert_to_unix_filename(filename); |
413 |
} |
414 |
else |
415 |
{ |
416 |
filename[0] = 0; |
417 |
} |
418 |
|
419 |
if (!fns->create) |
420 |
{ |
421 |
status = STATUS_NOT_SUPPORTED; |
422 |
break; |
423 |
} |
424 |
|
425 |
status = fns->create(device, desired_access, share_mode, disposition, |
426 |
flags_and_attributes, filename, &result); |
427 |
buffer_len = 1; |
428 |
break; |
429 |
|
430 |
case IRP_MJ_CLOSE: |
431 |
if (!fns->close) |
432 |
{ |
433 |
status = STATUS_NOT_SUPPORTED; |
434 |
break; |
435 |
} |
436 |
|
437 |
status = fns->close(file); |
438 |
break; |
439 |
|
440 |
case IRP_MJ_READ: |
441 |
|
442 |
if (!fns->read) |
443 |
{ |
444 |
status = STATUS_NOT_SUPPORTED; |
445 |
break; |
446 |
} |
447 |
|
448 |
in_uint32_le(s, length); |
449 |
in_uint32_le(s, offset); |
450 |
#if WITH_DEBUG_RDP5 |
451 |
DEBUG(("RDPDR IRP Read (length: %d, offset: %d)\n", length, offset)); |
452 |
#endif |
453 |
if (!rdpdr_handle_ok(device, file)) |
454 |
{ |
455 |
status = STATUS_INVALID_HANDLE; |
456 |
break; |
457 |
} |
458 |
|
459 |
if (rw_blocking) // Complete read immediately |
460 |
{ |
461 |
buffer = (uint8 *) xrealloc((void *) buffer, length); |
462 |
if (!buffer) |
463 |
{ |
464 |
status = STATUS_CANCELLED; |
465 |
break; |
466 |
} |
467 |
status = fns->read(file, buffer, length, offset, &result); |
468 |
buffer_len = result; |
469 |
break; |
470 |
} |
471 |
|
472 |
// Add request to table |
473 |
pst_buf = (uint8 *) xmalloc(length); |
474 |
if (!pst_buf) |
475 |
{ |
476 |
status = STATUS_CANCELLED; |
477 |
break; |
478 |
} |
479 |
serial_get_timeout(file, length, &total_timeout, &interval_timeout); |
480 |
if (add_async_iorequest |
481 |
(device, file, id, major, length, fns, total_timeout, interval_timeout, |
482 |
pst_buf, offset)) |
483 |
{ |
484 |
status = STATUS_PENDING; |
485 |
break; |
486 |
} |
487 |
|
488 |
status = STATUS_CANCELLED; |
489 |
break; |
490 |
case IRP_MJ_WRITE: |
491 |
|
492 |
buffer_len = 1; |
493 |
|
494 |
if (!fns->write) |
495 |
{ |
496 |
status = STATUS_NOT_SUPPORTED; |
497 |
break; |
498 |
} |
499 |
|
500 |
in_uint32_le(s, length); |
501 |
in_uint32_le(s, offset); |
502 |
in_uint8s(s, 0x18); |
503 |
#if WITH_DEBUG_RDP5 |
504 |
DEBUG(("RDPDR IRP Write (length: %d)\n", result)); |
505 |
#endif |
506 |
if (!rdpdr_handle_ok(device, file)) |
507 |
{ |
508 |
status = STATUS_INVALID_HANDLE; |
509 |
break; |
510 |
} |
511 |
|
512 |
if (rw_blocking) // Complete immediately |
513 |
{ |
514 |
status = fns->write(file, s->p, length, offset, &result); |
515 |
break; |
516 |
} |
517 |
|
518 |
// Add to table |
519 |
pst_buf = (uint8 *) xmalloc(length); |
520 |
if (!pst_buf) |
521 |
{ |
522 |
status = STATUS_CANCELLED; |
523 |
break; |
524 |
} |
525 |
|
526 |
in_uint8a(s, pst_buf, length); |
527 |
|
528 |
if (add_async_iorequest |
529 |
(device, file, id, major, length, fns, 0, 0, pst_buf, offset)) |
530 |
{ |
531 |
status = STATUS_PENDING; |
532 |
break; |
533 |
} |
534 |
|
535 |
status = STATUS_CANCELLED; |
536 |
break; |
537 |
|
538 |
case IRP_MJ_QUERY_INFORMATION: |
539 |
|
540 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
541 |
{ |
542 |
status = STATUS_INVALID_HANDLE; |
543 |
break; |
544 |
} |
545 |
in_uint32_le(s, info_level); |
546 |
|
547 |
out.data = out.p = buffer; |
548 |
out.size = sizeof(buffer); |
549 |
status = disk_query_information(file, info_level, &out); |
550 |
result = buffer_len = out.p - out.data; |
551 |
|
552 |
break; |
553 |
|
554 |
case IRP_MJ_SET_INFORMATION: |
555 |
|
556 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
557 |
{ |
558 |
status = STATUS_INVALID_HANDLE; |
559 |
break; |
560 |
} |
561 |
|
562 |
in_uint32_le(s, info_level); |
563 |
|
564 |
out.data = out.p = buffer; |
565 |
out.size = sizeof(buffer); |
566 |
status = disk_set_information(file, info_level, s, &out); |
567 |
result = buffer_len = out.p - out.data; |
568 |
break; |
569 |
|
570 |
case IRP_MJ_QUERY_VOLUME_INFORMATION: |
571 |
|
572 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
573 |
{ |
574 |
status = STATUS_INVALID_HANDLE; |
575 |
break; |
576 |
} |
577 |
|
578 |
in_uint32_le(s, info_level); |
579 |
|
580 |
out.data = out.p = buffer; |
581 |
out.size = sizeof(buffer); |
582 |
status = disk_query_volume_information(file, info_level, &out); |
583 |
result = buffer_len = out.p - out.data; |
584 |
break; |
585 |
|
586 |
case IRP_MJ_DIRECTORY_CONTROL: |
587 |
|
588 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
589 |
{ |
590 |
status = STATUS_INVALID_HANDLE; |
591 |
break; |
592 |
} |
593 |
|
594 |
switch (minor) |
595 |
{ |
596 |
case IRP_MN_QUERY_DIRECTORY: |
597 |
|
598 |
in_uint32_le(s, info_level); |
599 |
in_uint8s(s, 1); |
600 |
in_uint32_le(s, length); |
601 |
in_uint8s(s, 0x17); |
602 |
if (length && length < 2 * 255) |
603 |
{ |
604 |
rdp_in_unistr(s, filename, length); |
605 |
convert_to_unix_filename(filename); |
606 |
} |
607 |
else |
608 |
{ |
609 |
filename[0] = 0; |
610 |
} |
611 |
out.data = out.p = buffer; |
612 |
out.size = sizeof(buffer); |
613 |
status = disk_query_directory(file, info_level, filename, |
614 |
&out); |
615 |
result = buffer_len = out.p - out.data; |
616 |
if (!buffer_len) |
617 |
buffer_len++; |
618 |
break; |
619 |
|
620 |
case IRP_MN_NOTIFY_CHANGE_DIRECTORY: |
621 |
|
622 |
/* JIF |
623 |
unimpl("IRP major=0x%x minor=0x%x: IRP_MN_NOTIFY_CHANGE_DIRECTORY\n", major, minor); */ |
624 |
status = STATUS_PENDING; // Don't send completion packet |
625 |
break; |
626 |
|
627 |
default: |
628 |
|
629 |
status = STATUS_INVALID_PARAMETER; |
630 |
/* JIF |
631 |
unimpl("IRP major=0x%x minor=0x%x\n", major, minor); */ |
632 |
} |
633 |
break; |
634 |
|
635 |
case IRP_MJ_DEVICE_CONTROL: |
636 |
|
637 |
if (!fns->device_control) |
638 |
{ |
639 |
status = STATUS_NOT_SUPPORTED; |
640 |
break; |
641 |
} |
642 |
|
643 |
in_uint32_le(s, bytes_out); |
644 |
in_uint32_le(s, bytes_in); |
645 |
in_uint32_le(s, request); |
646 |
in_uint8s(s, 0x14); |
647 |
|
648 |
buffer = (uint8 *) xrealloc((void *) buffer, bytes_out + 0x14); |
649 |
if (!buffer) |
650 |
{ |
651 |
status = STATUS_CANCELLED; |
652 |
break; |
653 |
} |
654 |
|
655 |
out.data = out.p = buffer; |
656 |
out.size = sizeof(buffer); |
657 |
status = fns->device_control(file, request, s, &out); |
658 |
result = buffer_len = out.p - out.data; |
659 |
break; |
660 |
|
661 |
|
662 |
case IRP_MJ_LOCK_CONTROL: |
663 |
|
664 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
665 |
{ |
666 |
status = STATUS_INVALID_HANDLE; |
667 |
break; |
668 |
} |
669 |
|
670 |
in_uint32_le(s, info_level); |
671 |
|
672 |
out.data = out.p = buffer; |
673 |
out.size = sizeof(buffer); |
674 |
/* FIXME: Perhaps consider actually *do* |
675 |
something here :-) */ |
676 |
status = STATUS_SUCCESS; |
677 |
result = buffer_len = out.p - out.data; |
678 |
break; |
679 |
|
680 |
default: |
681 |
unimpl("IRP major=0x%x minor=0x%x\n", major, minor); |
682 |
break; |
683 |
} |
684 |
|
685 |
if (status != STATUS_PENDING) |
686 |
{ |
687 |
rdpdr_send_completion(device, id, status, result, buffer, buffer_len); |
688 |
} |
689 |
if (buffer) |
690 |
xfree(buffer); |
691 |
buffer = NULL; |
692 |
} |
693 |
|
694 |
static void |
695 |
rdpdr_send_clientcapabilty(void) |
696 |
{ |
697 |
uint8 magic[4] = "rDPC"; |
698 |
STREAM s; |
699 |
|
700 |
s = channel_init(rdpdr_channel, 0x50); |
701 |
out_uint8a(s, magic, 4); |
702 |
out_uint32_le(s, 5); /* count */ |
703 |
out_uint16_le(s, 1); /* first */ |
704 |
out_uint16_le(s, 0x28); /* length */ |
705 |
out_uint32_le(s, 1); |
706 |
out_uint32_le(s, 2); |
707 |
out_uint16_le(s, 2); |
708 |
out_uint16_le(s, 5); |
709 |
out_uint16_le(s, 1); |
710 |
out_uint16_le(s, 5); |
711 |
out_uint16_le(s, 0xFFFF); |
712 |
out_uint16_le(s, 0); |
713 |
out_uint32_le(s, 0); |
714 |
out_uint32_le(s, 3); |
715 |
out_uint32_le(s, 0); |
716 |
out_uint32_le(s, 0); |
717 |
out_uint16_le(s, 2); /* second */ |
718 |
out_uint16_le(s, 8); /* length */ |
719 |
out_uint32_le(s, 1); |
720 |
out_uint16_le(s, 3); /* third */ |
721 |
out_uint16_le(s, 8); /* length */ |
722 |
out_uint32_le(s, 1); |
723 |
out_uint16_le(s, 4); /* fourth */ |
724 |
out_uint16_le(s, 8); /* length */ |
725 |
out_uint32_le(s, 1); |
726 |
out_uint16_le(s, 5); /* fifth */ |
727 |
out_uint16_le(s, 8); /* length */ |
728 |
out_uint32_le(s, 1); |
729 |
|
730 |
s_mark_end(s); |
731 |
channel_send(s, rdpdr_channel); |
732 |
} |
733 |
|
734 |
static void |
735 |
rdpdr_process(STREAM s) |
736 |
{ |
737 |
uint32 handle; |
738 |
uint8 *magic; |
739 |
|
740 |
#if WITH_DEBUG_RDP5 |
741 |
printf("--- rdpdr_process ---\n"); |
742 |
hexdump(s->p, s->end - s->p); |
743 |
#endif |
744 |
in_uint8p(s, magic, 4); |
745 |
|
746 |
if ((magic[0] == 'r') && (magic[1] == 'D')) |
747 |
{ |
748 |
if ((magic[2] == 'R') && (magic[3] == 'I')) |
749 |
{ |
750 |
rdpdr_process_irp(s); |
751 |
return; |
752 |
} |
753 |
if ((magic[2] == 'n') && (magic[3] == 'I')) |
754 |
{ |
755 |
rdpdr_send_connect(); |
756 |
rdpdr_send_name(); |
757 |
return; |
758 |
} |
759 |
if ((magic[2] == 'C') && (magic[3] == 'C')) |
760 |
{ |
761 |
/* connect from server */ |
762 |
rdpdr_send_clientcapabilty(); |
763 |
rdpdr_send_available(); |
764 |
return; |
765 |
} |
766 |
if ((magic[2] == 'r') && (magic[3] == 'd')) |
767 |
{ |
768 |
/* connect to a specific resource */ |
769 |
in_uint32(s, handle); |
770 |
#if WITH_DEBUG_RDP5 |
771 |
DEBUG(("RDPDR: Server connected to resource %d\n", handle)); |
772 |
#endif |
773 |
return; |
774 |
} |
775 |
if ((magic[2] == 'P') && (magic[3] == 'S')) |
776 |
{ |
777 |
/* server capability */ |
778 |
return; |
779 |
} |
780 |
} |
781 |
if ((magic[0] == 'R') && (magic[1] == 'P')) |
782 |
{ |
783 |
if ((magic[2] == 'C') && (magic[3] == 'P')) |
784 |
{ |
785 |
printercache_process(s); |
786 |
return; |
787 |
} |
788 |
} |
789 |
unimpl("RDPDR packet type %c%c%c%c\n", magic[0], magic[1], magic[2], magic[3]); |
790 |
} |
791 |
|
792 |
BOOL |
793 |
rdpdr_init() |
794 |
{ |
795 |
if (g_num_devices > 0) |
796 |
{ |
797 |
rdpdr_channel = |
798 |
channel_register("rdpdr", |
799 |
CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_COMPRESS_RDP, |
800 |
rdpdr_process); |
801 |
} |
802 |
|
803 |
return (rdpdr_channel != NULL); |
804 |
} |
805 |
|
806 |
/* Add file descriptors of pending io request to select() */ |
807 |
void |
808 |
rdpdr_add_fds(int *n, fd_set * rfds, fd_set * wfds, struct timeval *tv, BOOL * timeout) |
809 |
{ |
810 |
uint32 select_timeout = 0; // Timeout value to be used for select() (in millisecons). |
811 |
struct async_iorequest *iorq; |
812 |
char c; |
813 |
|
814 |
iorq = g_iorequest; |
815 |
while (iorq != NULL) |
816 |
{ |
817 |
/* We need to test that the fd is still valid */ |
818 |
if ((iorq->fd != 0) && (read(iorq->fd, &c, 0) == 0)) |
819 |
{ |
820 |
switch (iorq->major) |
821 |
{ |
822 |
case IRP_MJ_READ: |
823 |
|
824 |
FD_SET(iorq->fd, rfds); |
825 |
|
826 |
// Check if io request timeout is smaller than current (but not 0). |
827 |
if (iorq->timeout |
828 |
&& (select_timeout == 0 |
829 |
|| iorq->timeout < select_timeout)) |
830 |
{ |
831 |
// Set new timeout |
832 |
select_timeout = iorq->timeout; |
833 |
g_min_timeout_fd = iorq->fd; /* Remember fd */ |
834 |
tv->tv_sec = select_timeout / 1000; |
835 |
tv->tv_usec = (select_timeout % 1000) * 1000; |
836 |
*timeout = True; |
837 |
} |
838 |
break; |
839 |
|
840 |
case IRP_MJ_WRITE: |
841 |
FD_SET(iorq->fd, wfds); |
842 |
break; |
843 |
|
844 |
} |
845 |
*n = MAX(*n, iorq->fd); |
846 |
} |
847 |
|
848 |
iorq = iorq->next; |
849 |
} |
850 |
} |
851 |
|
852 |
struct async_iorequest * |
853 |
rdpdr_remove_iorequest(struct async_iorequest *prev, struct async_iorequest *iorq) |
854 |
{ |
855 |
if (!iorq) |
856 |
return NULL; |
857 |
|
858 |
if (iorq->buffer) |
859 |
xfree(iorq->buffer); |
860 |
if (prev) |
861 |
{ |
862 |
prev->next = iorq->next; |
863 |
xfree(iorq); |
864 |
iorq = prev->next; |
865 |
} |
866 |
else |
867 |
{ |
868 |
// Even if NULL |
869 |
g_iorequest = iorq->next; |
870 |
xfree(iorq); |
871 |
iorq = NULL; |
872 |
} |
873 |
return iorq; |
874 |
} |
875 |
|
876 |
/* Check if select() returned with one of the rdpdr file descriptors, and complete io if it did */ |
877 |
void |
878 |
rdpdr_check_fds(fd_set * rfds, fd_set * wfds, BOOL timed_out) |
879 |
{ |
880 |
NTSTATUS status; |
881 |
uint32 result = 0; |
882 |
DEVICE_FNS *fns; |
883 |
struct async_iorequest *iorq; |
884 |
struct async_iorequest *prev; |
885 |
uint32 req_size = 0; |
886 |
|
887 |
if (timed_out) |
888 |
{ |
889 |
rdpdr_abort_io(g_min_timeout_fd, 0, STATUS_TIMEOUT); |
890 |
return; |
891 |
} |
892 |
|
893 |
iorq = g_iorequest; |
894 |
prev = NULL; |
895 |
while (iorq != NULL) |
896 |
{ |
897 |
if (iorq->fd != 0) |
898 |
{ |
899 |
switch (iorq->major) |
900 |
{ |
901 |
case IRP_MJ_READ: |
902 |
if (FD_ISSET(iorq->fd, rfds)) |
903 |
{ |
904 |
/* Read the data */ |
905 |
fns = iorq->fns; |
906 |
|
907 |
req_size = |
908 |
(iorq->length - iorq->partial_len) > |
909 |
8192 ? 8192 : (iorq->length - |
910 |
iorq->partial_len); |
911 |
/* never read larger chunks than 8k - chances are that it will block */ |
912 |
status = fns->read(iorq->fd, |
913 |
iorq->buffer + iorq->partial_len, |
914 |
req_size, iorq->offset, &result); |
915 |
|
916 |
if (result > 0) |
917 |
{ |
918 |
iorq->partial_len += result; |
919 |
iorq->offset += result; |
920 |
} |
921 |
#if WITH_DEBUG_RDP5 |
922 |
DEBUG(("RDPDR: %d bytes of data read\n", result)); |
923 |
#endif |
924 |
/* only delete link if all data has been transfered */ |
925 |
/* or if result was 0 and status success - EOF */ |
926 |
if ((iorq->partial_len == iorq->length) || |
927 |
(result == 0)) |
928 |
{ |
929 |
#if WITH_DEBUG_RDP5 |
930 |
DEBUG(("RDPDR: AIO total %u bytes read of %u\n", iorq->partial_len, iorq->length)); |
931 |
#endif |
932 |
rdpdr_send_completion(iorq->device, |
933 |
iorq->id, status, |
934 |
iorq->partial_len, |
935 |
iorq->buffer, |
936 |
iorq->partial_len); |
937 |
iorq = rdpdr_remove_iorequest(prev, iorq); |
938 |
} |
939 |
} |
940 |
break; |
941 |
case IRP_MJ_WRITE: |
942 |
if (FD_ISSET(iorq->fd, wfds)) |
943 |
{ |
944 |
/* Write data. */ |
945 |
fns = iorq->fns; |
946 |
|
947 |
req_size = |
948 |
(iorq->length - iorq->partial_len) > |
949 |
8192 ? 8192 : (iorq->length - |
950 |
iorq->partial_len); |
951 |
|
952 |
/* never write larger chunks than 8k - chances are that it will block */ |
953 |
status = fns->write(iorq->fd, |
954 |
iorq->buffer + |
955 |
iorq->partial_len, req_size, |
956 |
iorq->offset, &result); |
957 |
|
958 |
if (result > 0) |
959 |
{ |
960 |
iorq->partial_len += result; |
961 |
iorq->offset += result; |
962 |
} |
963 |
|
964 |
#if WITH_DEBUG_RDP5 |
965 |
DEBUG(("RDPDR: %d bytes of data written\n", |
966 |
result)); |
967 |
#endif |
968 |
/* only delete link if all data has been transfered */ |
969 |
/* or we couldn't write */ |
970 |
if ((iorq->partial_len == iorq->length) |
971 |
|| (result == 0)) |
972 |
{ |
973 |
#if WITH_DEBUG_RDP5 |
974 |
DEBUG(("RDPDR: AIO total %u bytes written of %u\n", iorq->partial_len, iorq->length)); |
975 |
#endif |
976 |
rdpdr_send_completion(iorq->device, |
977 |
iorq->id, status, |
978 |
iorq->partial_len, |
979 |
(uint8 *) "", 1); |
980 |
|
981 |
iorq = rdpdr_remove_iorequest(prev, iorq); |
982 |
} |
983 |
} |
984 |
break; |
985 |
} |
986 |
|
987 |
} |
988 |
prev = iorq; |
989 |
if (iorq) |
990 |
iorq = iorq->next; |
991 |
} |
992 |
|
993 |
} |
994 |
|
995 |
/* Abort a pending io request for a given handle and major */ |
996 |
BOOL |
997 |
rdpdr_abort_io(uint32 fd, uint32 major, NTSTATUS status) |
998 |
{ |
999 |
uint32 result; |
1000 |
struct async_iorequest *iorq; |
1001 |
struct async_iorequest *prev; |
1002 |
|
1003 |
iorq = g_iorequest; |
1004 |
prev = NULL; |
1005 |
while (iorq != NULL) |
1006 |
{ |
1007 |
// Only remove from table when major is not set, or when correct major is supplied. |
1008 |
// Abort read should not abort a write io request. |
1009 |
if ((iorq->fd == fd) && (major == 0 || iorq->major == major)) |
1010 |
{ |
1011 |
result = 0; |
1012 |
rdpdr_send_completion(iorq->device, iorq->id, status, result, (uint8 *) "", |
1013 |
1); |
1014 |
|
1015 |
iorq = rdpdr_remove_iorequest(prev, iorq); |
1016 |
return True; |
1017 |
} |
1018 |
|
1019 |
prev = iorq; |
1020 |
iorq = iorq->next; |
1021 |
} |
1022 |
|
1023 |
return False; |
1024 |
} |