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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 <errno.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 g_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; |
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} |
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return -1; |
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} |
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|
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/* Converts a windows path to a unix path */ |
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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 = g_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 */ |
215 |
out_uint16_le(s, 0x72); |
216 |
out_uint32(s, 0); |
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out_uint32_le(s, hostlen); |
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rdp_out_unistr(s, g_rdpdr_clientname, hostlen - 2); |
219 |
s_mark_end(s); |
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channel_send(s, rdpdr_channel); |
221 |
} |
222 |
|
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/* Returns the size of the payload of the announce packet */ |
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static int |
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announcedata_size() |
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{ |
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int size, i; |
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PRINTER *printerinfo; |
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|
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size = 8; //static announce size |
231 |
size += g_num_devices * 0x14; |
232 |
|
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for (i = 0; i < g_num_devices; i++) |
234 |
{ |
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if (g_rdpdr_device[i].device_type == DEVICE_TYPE_PRINTER) |
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{ |
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printerinfo = (PRINTER *) g_rdpdr_device[i].pdevice_data; |
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printerinfo->bloblen = |
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printercache_load_blob(printerinfo->printer, &(printerinfo->blob)); |
240 |
|
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size += 0x18; |
242 |
size += 2 * strlen(printerinfo->driver) + 2; |
243 |
size += 2 * strlen(printerinfo->printer) + 2; |
244 |
size += printerinfo->bloblen; |
245 |
} |
246 |
} |
247 |
|
248 |
return size; |
249 |
} |
250 |
|
251 |
static void |
252 |
rdpdr_send_available(void) |
253 |
{ |
254 |
|
255 |
uint8 magic[4] = "rDAD"; |
256 |
uint32 driverlen, printerlen, bloblen; |
257 |
int i; |
258 |
STREAM s; |
259 |
PRINTER *printerinfo; |
260 |
|
261 |
s = channel_init(rdpdr_channel, announcedata_size()); |
262 |
out_uint8a(s, magic, 4); |
263 |
out_uint32_le(s, g_num_devices); |
264 |
|
265 |
for (i = 0; i < g_num_devices; i++) |
266 |
{ |
267 |
out_uint32_le(s, g_rdpdr_device[i].device_type); |
268 |
out_uint32_le(s, i); /* RDP Device ID */ |
269 |
/* Is it possible to use share names longer than 8 chars? |
270 |
/astrand */ |
271 |
out_uint8p(s, g_rdpdr_device[i].name, 8); |
272 |
|
273 |
switch (g_rdpdr_device[i].device_type) |
274 |
{ |
275 |
case DEVICE_TYPE_PRINTER: |
276 |
printerinfo = (PRINTER *) g_rdpdr_device[i].pdevice_data; |
277 |
|
278 |
driverlen = 2 * strlen(printerinfo->driver) + 2; |
279 |
printerlen = 2 * strlen(printerinfo->printer) + 2; |
280 |
bloblen = printerinfo->bloblen; |
281 |
|
282 |
out_uint32_le(s, 24 + driverlen + printerlen + bloblen); /* length of extra info */ |
283 |
out_uint32_le(s, printerinfo->default_printer ? 2 : 0); |
284 |
out_uint8s(s, 8); /* unknown */ |
285 |
out_uint32_le(s, driverlen); |
286 |
out_uint32_le(s, printerlen); |
287 |
out_uint32_le(s, bloblen); |
288 |
rdp_out_unistr(s, printerinfo->driver, driverlen - 2); |
289 |
rdp_out_unistr(s, printerinfo->printer, printerlen - 2); |
290 |
out_uint8a(s, printerinfo->blob, bloblen); |
291 |
|
292 |
if (printerinfo->blob) |
293 |
xfree(printerinfo->blob); /* Blob is sent twice if reconnecting */ |
294 |
break; |
295 |
default: |
296 |
out_uint32(s, 0); |
297 |
} |
298 |
} |
299 |
#if 0 |
300 |
out_uint32_le(s, 0x20); /* Device type 0x20 - smart card */ |
301 |
out_uint32_le(s, 0); |
302 |
out_uint8p(s, "SCARD", 5); |
303 |
out_uint8s(s, 3); |
304 |
out_uint32(s, 0); |
305 |
#endif |
306 |
|
307 |
s_mark_end(s); |
308 |
channel_send(s, rdpdr_channel); |
309 |
} |
310 |
|
311 |
static void |
312 |
rdpdr_send_completion(uint32 device, uint32 id, uint32 status, uint32 result, uint8 * buffer, |
313 |
uint32 length) |
314 |
{ |
315 |
uint8 magic[4] = "rDCI"; |
316 |
STREAM s; |
317 |
|
318 |
s = channel_init(rdpdr_channel, 20 + length); |
319 |
out_uint8a(s, magic, 4); |
320 |
out_uint32_le(s, device); |
321 |
out_uint32_le(s, id); |
322 |
out_uint32_le(s, status); |
323 |
out_uint32_le(s, result); |
324 |
out_uint8p(s, buffer, length); |
325 |
s_mark_end(s); |
326 |
/* JIF |
327 |
hexdump(s->channel_hdr + 8, s->end - s->channel_hdr - 8); */ |
328 |
channel_send(s, rdpdr_channel); |
329 |
} |
330 |
|
331 |
static void |
332 |
rdpdr_process_irp(STREAM s) |
333 |
{ |
334 |
uint32 result = 0, |
335 |
length = 0, |
336 |
desired_access = 0, |
337 |
request, |
338 |
file, |
339 |
info_level, |
340 |
buffer_len, |
341 |
id, |
342 |
major, |
343 |
minor, |
344 |
device, |
345 |
offset, |
346 |
bytes_in, |
347 |
bytes_out, |
348 |
error_mode, |
349 |
share_mode, disposition, total_timeout, interval_timeout, flags_and_attributes = 0; |
350 |
|
351 |
char filename[256]; |
352 |
uint8 *buffer, *pst_buf; |
353 |
struct stream out; |
354 |
DEVICE_FNS *fns; |
355 |
BOOL rw_blocking = True; |
356 |
NTSTATUS status = STATUS_INVALID_DEVICE_REQUEST; |
357 |
|
358 |
in_uint32_le(s, device); |
359 |
in_uint32_le(s, file); |
360 |
in_uint32_le(s, id); |
361 |
in_uint32_le(s, major); |
362 |
in_uint32_le(s, minor); |
363 |
|
364 |
buffer_len = 0; |
365 |
buffer = (uint8 *) xmalloc(1024); |
366 |
buffer[0] = 0; |
367 |
|
368 |
switch (g_rdpdr_device[device].device_type) |
369 |
{ |
370 |
case DEVICE_TYPE_SERIAL: |
371 |
|
372 |
fns = &serial_fns; |
373 |
rw_blocking = False; |
374 |
break; |
375 |
|
376 |
case DEVICE_TYPE_PARALLEL: |
377 |
|
378 |
fns = ¶llel_fns; |
379 |
rw_blocking = False; |
380 |
break; |
381 |
|
382 |
case DEVICE_TYPE_PRINTER: |
383 |
|
384 |
fns = &printer_fns; |
385 |
break; |
386 |
|
387 |
case DEVICE_TYPE_DISK: |
388 |
|
389 |
fns = &disk_fns; |
390 |
rw_blocking = False; |
391 |
break; |
392 |
|
393 |
case DEVICE_TYPE_SCARD: |
394 |
default: |
395 |
|
396 |
error("IRP for bad device %ld\n", device); |
397 |
return; |
398 |
} |
399 |
|
400 |
switch (major) |
401 |
{ |
402 |
case IRP_MJ_CREATE: |
403 |
|
404 |
in_uint32_be(s, desired_access); |
405 |
in_uint8s(s, 0x08); // unknown |
406 |
in_uint32_le(s, error_mode); |
407 |
in_uint32_le(s, share_mode); |
408 |
in_uint32_le(s, disposition); |
409 |
in_uint32_le(s, flags_and_attributes); |
410 |
in_uint32_le(s, length); |
411 |
|
412 |
if (length && (length / 2) < 256) |
413 |
{ |
414 |
rdp_in_unistr(s, filename, length); |
415 |
convert_to_unix_filename(filename); |
416 |
} |
417 |
else |
418 |
{ |
419 |
filename[0] = 0; |
420 |
} |
421 |
|
422 |
if (!fns->create) |
423 |
{ |
424 |
status = STATUS_NOT_SUPPORTED; |
425 |
break; |
426 |
} |
427 |
|
428 |
status = fns->create(device, desired_access, share_mode, disposition, |
429 |
flags_and_attributes, filename, &result); |
430 |
buffer_len = 1; |
431 |
break; |
432 |
|
433 |
case IRP_MJ_CLOSE: |
434 |
if (!fns->close) |
435 |
{ |
436 |
status = STATUS_NOT_SUPPORTED; |
437 |
break; |
438 |
} |
439 |
|
440 |
status = fns->close(file); |
441 |
break; |
442 |
|
443 |
case IRP_MJ_READ: |
444 |
|
445 |
if (!fns->read) |
446 |
{ |
447 |
status = STATUS_NOT_SUPPORTED; |
448 |
break; |
449 |
} |
450 |
|
451 |
in_uint32_le(s, length); |
452 |
in_uint32_le(s, offset); |
453 |
#if WITH_DEBUG_RDP5 |
454 |
DEBUG(("RDPDR IRP Read (length: %d, offset: %d)\n", length, offset)); |
455 |
#endif |
456 |
if (!rdpdr_handle_ok(device, file)) |
457 |
{ |
458 |
status = STATUS_INVALID_HANDLE; |
459 |
break; |
460 |
} |
461 |
|
462 |
if (rw_blocking) // Complete read immediately |
463 |
{ |
464 |
buffer = (uint8 *) xrealloc((void *) buffer, length); |
465 |
if (!buffer) |
466 |
{ |
467 |
status = STATUS_CANCELLED; |
468 |
break; |
469 |
} |
470 |
status = fns->read(file, buffer, length, offset, &result); |
471 |
buffer_len = result; |
472 |
break; |
473 |
} |
474 |
|
475 |
// Add request to table |
476 |
pst_buf = (uint8 *) xmalloc(length); |
477 |
if (!pst_buf) |
478 |
{ |
479 |
status = STATUS_CANCELLED; |
480 |
break; |
481 |
} |
482 |
serial_get_timeout(file, length, &total_timeout, &interval_timeout); |
483 |
if (add_async_iorequest |
484 |
(device, file, id, major, length, fns, total_timeout, interval_timeout, |
485 |
pst_buf, offset)) |
486 |
{ |
487 |
status = STATUS_PENDING; |
488 |
break; |
489 |
} |
490 |
|
491 |
status = STATUS_CANCELLED; |
492 |
break; |
493 |
case IRP_MJ_WRITE: |
494 |
|
495 |
buffer_len = 1; |
496 |
|
497 |
if (!fns->write) |
498 |
{ |
499 |
status = STATUS_NOT_SUPPORTED; |
500 |
break; |
501 |
} |
502 |
|
503 |
in_uint32_le(s, length); |
504 |
in_uint32_le(s, offset); |
505 |
in_uint8s(s, 0x18); |
506 |
#if WITH_DEBUG_RDP5 |
507 |
DEBUG(("RDPDR IRP Write (length: %d)\n", result)); |
508 |
#endif |
509 |
if (!rdpdr_handle_ok(device, file)) |
510 |
{ |
511 |
status = STATUS_INVALID_HANDLE; |
512 |
break; |
513 |
} |
514 |
|
515 |
if (rw_blocking) // Complete immediately |
516 |
{ |
517 |
status = fns->write(file, s->p, length, offset, &result); |
518 |
break; |
519 |
} |
520 |
|
521 |
// Add to table |
522 |
pst_buf = (uint8 *) xmalloc(length); |
523 |
if (!pst_buf) |
524 |
{ |
525 |
status = STATUS_CANCELLED; |
526 |
break; |
527 |
} |
528 |
|
529 |
in_uint8a(s, pst_buf, length); |
530 |
|
531 |
if (add_async_iorequest |
532 |
(device, file, id, major, length, fns, 0, 0, pst_buf, offset)) |
533 |
{ |
534 |
status = STATUS_PENDING; |
535 |
break; |
536 |
} |
537 |
|
538 |
status = STATUS_CANCELLED; |
539 |
break; |
540 |
|
541 |
case IRP_MJ_QUERY_INFORMATION: |
542 |
|
543 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
544 |
{ |
545 |
status = STATUS_INVALID_HANDLE; |
546 |
break; |
547 |
} |
548 |
in_uint32_le(s, info_level); |
549 |
|
550 |
out.data = out.p = buffer; |
551 |
out.size = sizeof(buffer); |
552 |
status = disk_query_information(file, info_level, &out); |
553 |
result = buffer_len = out.p - out.data; |
554 |
|
555 |
break; |
556 |
|
557 |
case IRP_MJ_SET_INFORMATION: |
558 |
|
559 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
560 |
{ |
561 |
status = STATUS_INVALID_HANDLE; |
562 |
break; |
563 |
} |
564 |
|
565 |
in_uint32_le(s, info_level); |
566 |
|
567 |
out.data = out.p = buffer; |
568 |
out.size = sizeof(buffer); |
569 |
status = disk_set_information(file, info_level, s, &out); |
570 |
result = buffer_len = out.p - out.data; |
571 |
break; |
572 |
|
573 |
case IRP_MJ_QUERY_VOLUME_INFORMATION: |
574 |
|
575 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
576 |
{ |
577 |
status = STATUS_INVALID_HANDLE; |
578 |
break; |
579 |
} |
580 |
|
581 |
in_uint32_le(s, info_level); |
582 |
|
583 |
out.data = out.p = buffer; |
584 |
out.size = sizeof(buffer); |
585 |
status = disk_query_volume_information(file, info_level, &out); |
586 |
result = buffer_len = out.p - out.data; |
587 |
break; |
588 |
|
589 |
case IRP_MJ_DIRECTORY_CONTROL: |
590 |
|
591 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
592 |
{ |
593 |
status = STATUS_INVALID_HANDLE; |
594 |
break; |
595 |
} |
596 |
|
597 |
switch (minor) |
598 |
{ |
599 |
case IRP_MN_QUERY_DIRECTORY: |
600 |
|
601 |
in_uint32_le(s, info_level); |
602 |
in_uint8s(s, 1); |
603 |
in_uint32_le(s, length); |
604 |
in_uint8s(s, 0x17); |
605 |
if (length && length < 2 * 255) |
606 |
{ |
607 |
rdp_in_unistr(s, filename, length); |
608 |
convert_to_unix_filename(filename); |
609 |
} |
610 |
else |
611 |
{ |
612 |
filename[0] = 0; |
613 |
} |
614 |
out.data = out.p = buffer; |
615 |
out.size = sizeof(buffer); |
616 |
status = disk_query_directory(file, info_level, filename, |
617 |
&out); |
618 |
result = buffer_len = out.p - out.data; |
619 |
if (!buffer_len) |
620 |
buffer_len++; |
621 |
break; |
622 |
|
623 |
case IRP_MN_NOTIFY_CHANGE_DIRECTORY: |
624 |
|
625 |
/* JIF |
626 |
unimpl("IRP major=0x%x minor=0x%x: IRP_MN_NOTIFY_CHANGE_DIRECTORY\n", major, minor); */ |
627 |
status = STATUS_PENDING; // Don't send completion packet |
628 |
break; |
629 |
|
630 |
default: |
631 |
|
632 |
status = STATUS_INVALID_PARAMETER; |
633 |
/* JIF |
634 |
unimpl("IRP major=0x%x minor=0x%x\n", major, minor); */ |
635 |
} |
636 |
break; |
637 |
|
638 |
case IRP_MJ_DEVICE_CONTROL: |
639 |
|
640 |
if (!fns->device_control) |
641 |
{ |
642 |
status = STATUS_NOT_SUPPORTED; |
643 |
break; |
644 |
} |
645 |
|
646 |
in_uint32_le(s, bytes_out); |
647 |
in_uint32_le(s, bytes_in); |
648 |
in_uint32_le(s, request); |
649 |
in_uint8s(s, 0x14); |
650 |
|
651 |
buffer = (uint8 *) xrealloc((void *) buffer, bytes_out + 0x14); |
652 |
if (!buffer) |
653 |
{ |
654 |
status = STATUS_CANCELLED; |
655 |
break; |
656 |
} |
657 |
|
658 |
out.data = out.p = buffer; |
659 |
out.size = sizeof(buffer); |
660 |
status = fns->device_control(file, request, s, &out); |
661 |
result = buffer_len = out.p - out.data; |
662 |
break; |
663 |
|
664 |
|
665 |
case IRP_MJ_LOCK_CONTROL: |
666 |
|
667 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
668 |
{ |
669 |
status = STATUS_INVALID_HANDLE; |
670 |
break; |
671 |
} |
672 |
|
673 |
in_uint32_le(s, info_level); |
674 |
|
675 |
out.data = out.p = buffer; |
676 |
out.size = sizeof(buffer); |
677 |
/* FIXME: Perhaps consider actually *do* |
678 |
something here :-) */ |
679 |
status = STATUS_SUCCESS; |
680 |
result = buffer_len = out.p - out.data; |
681 |
break; |
682 |
|
683 |
default: |
684 |
unimpl("IRP major=0x%x minor=0x%x\n", major, minor); |
685 |
break; |
686 |
} |
687 |
|
688 |
if (status != STATUS_PENDING) |
689 |
{ |
690 |
rdpdr_send_completion(device, id, status, result, buffer, buffer_len); |
691 |
} |
692 |
if (buffer) |
693 |
xfree(buffer); |
694 |
buffer = NULL; |
695 |
} |
696 |
|
697 |
static void |
698 |
rdpdr_send_clientcapabilty(void) |
699 |
{ |
700 |
uint8 magic[4] = "rDPC"; |
701 |
STREAM s; |
702 |
|
703 |
s = channel_init(rdpdr_channel, 0x50); |
704 |
out_uint8a(s, magic, 4); |
705 |
out_uint32_le(s, 5); /* count */ |
706 |
out_uint16_le(s, 1); /* first */ |
707 |
out_uint16_le(s, 0x28); /* length */ |
708 |
out_uint32_le(s, 1); |
709 |
out_uint32_le(s, 2); |
710 |
out_uint16_le(s, 2); |
711 |
out_uint16_le(s, 5); |
712 |
out_uint16_le(s, 1); |
713 |
out_uint16_le(s, 5); |
714 |
out_uint16_le(s, 0xFFFF); |
715 |
out_uint16_le(s, 0); |
716 |
out_uint32_le(s, 0); |
717 |
out_uint32_le(s, 3); |
718 |
out_uint32_le(s, 0); |
719 |
out_uint32_le(s, 0); |
720 |
out_uint16_le(s, 2); /* second */ |
721 |
out_uint16_le(s, 8); /* length */ |
722 |
out_uint32_le(s, 1); |
723 |
out_uint16_le(s, 3); /* third */ |
724 |
out_uint16_le(s, 8); /* length */ |
725 |
out_uint32_le(s, 1); |
726 |
out_uint16_le(s, 4); /* fourth */ |
727 |
out_uint16_le(s, 8); /* length */ |
728 |
out_uint32_le(s, 1); |
729 |
out_uint16_le(s, 5); /* fifth */ |
730 |
out_uint16_le(s, 8); /* length */ |
731 |
out_uint32_le(s, 1); |
732 |
|
733 |
s_mark_end(s); |
734 |
channel_send(s, rdpdr_channel); |
735 |
} |
736 |
|
737 |
static void |
738 |
rdpdr_process(STREAM s) |
739 |
{ |
740 |
uint32 handle; |
741 |
uint8 *magic; |
742 |
|
743 |
#if WITH_DEBUG_RDP5 |
744 |
printf("--- rdpdr_process ---\n"); |
745 |
hexdump(s->p, s->end - s->p); |
746 |
#endif |
747 |
in_uint8p(s, magic, 4); |
748 |
|
749 |
if ((magic[0] == 'r') && (magic[1] == 'D')) |
750 |
{ |
751 |
if ((magic[2] == 'R') && (magic[3] == 'I')) |
752 |
{ |
753 |
rdpdr_process_irp(s); |
754 |
return; |
755 |
} |
756 |
if ((magic[2] == 'n') && (magic[3] == 'I')) |
757 |
{ |
758 |
rdpdr_send_connect(); |
759 |
rdpdr_send_name(); |
760 |
return; |
761 |
} |
762 |
if ((magic[2] == 'C') && (magic[3] == 'C')) |
763 |
{ |
764 |
/* connect from server */ |
765 |
rdpdr_send_clientcapabilty(); |
766 |
rdpdr_send_available(); |
767 |
return; |
768 |
} |
769 |
if ((magic[2] == 'r') && (magic[3] == 'd')) |
770 |
{ |
771 |
/* connect to a specific resource */ |
772 |
in_uint32(s, handle); |
773 |
#if WITH_DEBUG_RDP5 |
774 |
DEBUG(("RDPDR: Server connected to resource %d\n", handle)); |
775 |
#endif |
776 |
return; |
777 |
} |
778 |
if ((magic[2] == 'P') && (magic[3] == 'S')) |
779 |
{ |
780 |
/* server capability */ |
781 |
return; |
782 |
} |
783 |
} |
784 |
if ((magic[0] == 'R') && (magic[1] == 'P')) |
785 |
{ |
786 |
if ((magic[2] == 'C') && (magic[3] == 'P')) |
787 |
{ |
788 |
printercache_process(s); |
789 |
return; |
790 |
} |
791 |
} |
792 |
unimpl("RDPDR packet type %c%c%c%c\n", magic[0], magic[1], magic[2], magic[3]); |
793 |
} |
794 |
|
795 |
BOOL |
796 |
rdpdr_init() |
797 |
{ |
798 |
if (g_num_devices > 0) |
799 |
{ |
800 |
rdpdr_channel = |
801 |
channel_register("rdpdr", |
802 |
CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_COMPRESS_RDP, |
803 |
rdpdr_process); |
804 |
} |
805 |
|
806 |
return (rdpdr_channel != NULL); |
807 |
} |
808 |
|
809 |
/* Add file descriptors of pending io request to select() */ |
810 |
void |
811 |
rdpdr_add_fds(int *n, fd_set * rfds, fd_set * wfds, struct timeval *tv, BOOL * timeout) |
812 |
{ |
813 |
uint32 select_timeout = 0; // Timeout value to be used for select() (in millisecons). |
814 |
struct async_iorequest *iorq; |
815 |
char c; |
816 |
|
817 |
iorq = g_iorequest; |
818 |
while (iorq != NULL) |
819 |
{ |
820 |
if (iorq->fd != 0) |
821 |
{ |
822 |
switch (iorq->major) |
823 |
{ |
824 |
case IRP_MJ_READ: |
825 |
/* Is this FD valid? FDs will |
826 |
be invalid when |
827 |
reconnecting. FIXME: Real |
828 |
support for reconnects. */ |
829 |
|
830 |
if ((read(iorq->fd, &c, 0) != 0) && (errno == EBADF)) |
831 |
break; |
832 |
|
833 |
FD_SET(iorq->fd, rfds); |
834 |
*n = MAX(*n, iorq->fd); |
835 |
|
836 |
// Check if io request timeout is smaller than current (but not 0). |
837 |
if (iorq->timeout |
838 |
&& (select_timeout == 0 |
839 |
|| iorq->timeout < select_timeout)) |
840 |
{ |
841 |
// Set new timeout |
842 |
select_timeout = iorq->timeout; |
843 |
g_min_timeout_fd = iorq->fd; /* Remember fd */ |
844 |
tv->tv_sec = select_timeout / 1000; |
845 |
tv->tv_usec = (select_timeout % 1000) * 1000; |
846 |
*timeout = True; |
847 |
} |
848 |
|
849 |
break; |
850 |
|
851 |
case IRP_MJ_WRITE: |
852 |
/* FD still valid? See above. */ |
853 |
if ((write(iorq->fd, &c, 0) != 0) && (errno == EBADF)) |
854 |
break; |
855 |
|
856 |
FD_SET(iorq->fd, wfds); |
857 |
*n = MAX(*n, iorq->fd); |
858 |
break; |
859 |
|
860 |
} |
861 |
|
862 |
} |
863 |
|
864 |
iorq = iorq->next; |
865 |
} |
866 |
} |
867 |
|
868 |
struct async_iorequest * |
869 |
rdpdr_remove_iorequest(struct async_iorequest *prev, struct async_iorequest *iorq) |
870 |
{ |
871 |
if (!iorq) |
872 |
return NULL; |
873 |
|
874 |
if (iorq->buffer) |
875 |
xfree(iorq->buffer); |
876 |
if (prev) |
877 |
{ |
878 |
prev->next = iorq->next; |
879 |
xfree(iorq); |
880 |
iorq = prev->next; |
881 |
} |
882 |
else |
883 |
{ |
884 |
// Even if NULL |
885 |
g_iorequest = iorq->next; |
886 |
xfree(iorq); |
887 |
iorq = NULL; |
888 |
} |
889 |
return iorq; |
890 |
} |
891 |
|
892 |
/* Check if select() returned with one of the rdpdr file descriptors, and complete io if it did */ |
893 |
void |
894 |
rdpdr_check_fds(fd_set * rfds, fd_set * wfds, BOOL timed_out) |
895 |
{ |
896 |
NTSTATUS status; |
897 |
uint32 result = 0; |
898 |
DEVICE_FNS *fns; |
899 |
struct async_iorequest *iorq; |
900 |
struct async_iorequest *prev; |
901 |
uint32 req_size = 0; |
902 |
|
903 |
if (timed_out) |
904 |
{ |
905 |
rdpdr_abort_io(g_min_timeout_fd, 0, STATUS_TIMEOUT); |
906 |
return; |
907 |
} |
908 |
|
909 |
iorq = g_iorequest; |
910 |
prev = NULL; |
911 |
while (iorq != NULL) |
912 |
{ |
913 |
if (iorq->fd != 0) |
914 |
{ |
915 |
switch (iorq->major) |
916 |
{ |
917 |
case IRP_MJ_READ: |
918 |
if (FD_ISSET(iorq->fd, rfds)) |
919 |
{ |
920 |
/* Read the data */ |
921 |
fns = iorq->fns; |
922 |
|
923 |
req_size = |
924 |
(iorq->length - iorq->partial_len) > |
925 |
8192 ? 8192 : (iorq->length - |
926 |
iorq->partial_len); |
927 |
/* never read larger chunks than 8k - chances are that it will block */ |
928 |
status = fns->read(iorq->fd, |
929 |
iorq->buffer + iorq->partial_len, |
930 |
req_size, iorq->offset, &result); |
931 |
|
932 |
if (result > 0) |
933 |
{ |
934 |
iorq->partial_len += result; |
935 |
iorq->offset += result; |
936 |
} |
937 |
#if WITH_DEBUG_RDP5 |
938 |
DEBUG(("RDPDR: %d bytes of data read\n", result)); |
939 |
#endif |
940 |
/* only delete link if all data has been transfered */ |
941 |
/* or if result was 0 and status success - EOF */ |
942 |
if ((iorq->partial_len == iorq->length) || |
943 |
(g_rdpdr_device[iorq->device].device_type == |
944 |
DEVICE_TYPE_SERIAL) || (result == 0)) |
945 |
{ |
946 |
#if WITH_DEBUG_RDP5 |
947 |
DEBUG(("RDPDR: AIO total %u bytes read of %u\n", iorq->partial_len, iorq->length)); |
948 |
#endif |
949 |
rdpdr_send_completion(iorq->device, |
950 |
iorq->id, status, |
951 |
iorq->partial_len, |
952 |
iorq->buffer, |
953 |
iorq->partial_len); |
954 |
iorq = rdpdr_remove_iorequest(prev, iorq); |
955 |
} |
956 |
} |
957 |
break; |
958 |
case IRP_MJ_WRITE: |
959 |
if (FD_ISSET(iorq->fd, wfds)) |
960 |
{ |
961 |
/* Write data. */ |
962 |
fns = iorq->fns; |
963 |
|
964 |
req_size = |
965 |
(iorq->length - iorq->partial_len) > |
966 |
8192 ? 8192 : (iorq->length - |
967 |
iorq->partial_len); |
968 |
|
969 |
/* never write larger chunks than 8k - chances are that it will block */ |
970 |
status = fns->write(iorq->fd, |
971 |
iorq->buffer + |
972 |
iorq->partial_len, req_size, |
973 |
iorq->offset, &result); |
974 |
|
975 |
if (result > 0) |
976 |
{ |
977 |
iorq->partial_len += result; |
978 |
iorq->offset += result; |
979 |
} |
980 |
|
981 |
#if WITH_DEBUG_RDP5 |
982 |
DEBUG(("RDPDR: %d bytes of data written\n", |
983 |
result)); |
984 |
#endif |
985 |
/* only delete link if all data has been transfered */ |
986 |
/* or we couldn't write */ |
987 |
if ((iorq->partial_len == iorq->length) |
988 |
|| (result == 0)) |
989 |
{ |
990 |
#if WITH_DEBUG_RDP5 |
991 |
DEBUG(("RDPDR: AIO total %u bytes written of %u\n", iorq->partial_len, iorq->length)); |
992 |
#endif |
993 |
rdpdr_send_completion(iorq->device, |
994 |
iorq->id, status, |
995 |
iorq->partial_len, |
996 |
(uint8 *) "", 1); |
997 |
|
998 |
iorq = rdpdr_remove_iorequest(prev, iorq); |
999 |
} |
1000 |
} |
1001 |
break; |
1002 |
} |
1003 |
|
1004 |
} |
1005 |
prev = iorq; |
1006 |
if (iorq) |
1007 |
iorq = iorq->next; |
1008 |
} |
1009 |
|
1010 |
} |
1011 |
|
1012 |
/* Abort a pending io request for a given handle and major */ |
1013 |
BOOL |
1014 |
rdpdr_abort_io(uint32 fd, uint32 major, NTSTATUS status) |
1015 |
{ |
1016 |
uint32 result; |
1017 |
struct async_iorequest *iorq; |
1018 |
struct async_iorequest *prev; |
1019 |
|
1020 |
iorq = g_iorequest; |
1021 |
prev = NULL; |
1022 |
while (iorq != NULL) |
1023 |
{ |
1024 |
// Only remove from table when major is not set, or when correct major is supplied. |
1025 |
// Abort read should not abort a write io request. |
1026 |
if ((iorq->fd == fd) && (major == 0 || iorq->major == major)) |
1027 |
{ |
1028 |
result = 0; |
1029 |
rdpdr_send_completion(iorq->device, iorq->id, status, result, (uint8 *) "", |
1030 |
1); |
1031 |
|
1032 |
iorq = rdpdr_remove_iorequest(prev, iorq); |
1033 |
return True; |
1034 |
} |
1035 |
|
1036 |
prev = iorq; |
1037 |
iorq = iorq->next; |
1038 |
} |
1039 |
|
1040 |
return False; |
1041 |
} |