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freerdp/channels/printer/client/printer_main.c

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/**
* FreeRDP: A Remote Desktop Protocol Implementation
* Print Virtual Channel
*
* Copyright 2010-2011 Vic Lee
* Copyright 2015 Thincast Technologies GmbH
* Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
* Copyright 2016 Armin Novak <armin.novak@gmail.com>
* Copyright 2016 David PHAM-VAN <d.phamvan@inuvika.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winpr/crt.h>
#include <winpr/string.h>
#include <winpr/synch.h>
#include <winpr/thread.h>
#include <winpr/stream.h>
#include <winpr/interlocked.h>
#include <winpr/path.h>
#include <freerdp/channels/rdpdr.h>
#include <freerdp/crypto/crypto.h>
#include "../printer.h"
#include <freerdp/client/printer.h>
#include <freerdp/channels/log.h>
#define TAG CHANNELS_TAG("printer.client")
typedef struct _PRINTER_DEVICE PRINTER_DEVICE;
struct _PRINTER_DEVICE
{
DEVICE device;
rdpPrinter* printer;
WINPR_PSLIST_HEADER pIrpList;
HANDLE event;
HANDLE stopEvent;
HANDLE thread;
rdpContext* rdpcontext;
char port[64];
};
typedef enum
{
PRN_CONF_PORT = 0,
PRN_CONF_PNP = 1,
PRN_CONF_DRIVER = 2,
PRN_CONF_DATA = 3
} prn_conf_t;
static const char* filemap[] = { "PortDosName", "PnPName", "DriverName",
"CachedPrinterConfigData" };
static char* get_printer_config_path(const rdpSettings* settings, const WCHAR* name, size_t length)
{
char* dir = GetCombinedPath(settings->ConfigPath, "printers");
char* bname = crypto_base64_encode((const BYTE*)name, (int)length);
char* config = GetCombinedPath(dir, bname);
if (config && !winpr_PathFileExists(config))
{
if (!winpr_PathMakePath(config, NULL))
{
free(config);
config = NULL;
}
}
free(dir);
free(bname);
return config;
}
static BOOL printer_write_setting(const char* path, prn_conf_t type, const void* data,
size_t length)
{
DWORD written = 0;
BOOL rc = FALSE;
HANDLE file;
size_t b64len;
char* base64 = NULL;
const char* name = filemap[type];
char* abs = GetCombinedPath(path, name);
if (!abs || (length > INT32_MAX))
return FALSE;
file = CreateFileA(abs, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
free(abs);
if (file == INVALID_HANDLE_VALUE)
return FALSE;
if (length > 0)
{
base64 = crypto_base64_encode(data, length);
if (!base64)
goto fail;
/* base64 char represents 6bit -> 4*(n/3) is the length which is
* always smaller than 2*n */
b64len = strnlen(base64, 2 * length);
rc = WriteFile(file, base64, b64len, &written, NULL);
if (b64len != written)
rc = FALSE;
}
else
rc = TRUE;
fail:
CloseHandle(file);
free(base64);
return rc;
}
static BOOL printer_config_valid(const char* path)
{
if (!path)
return FALSE;
if (!winpr_PathFileExists(path))
return FALSE;
return TRUE;
}
static BOOL printer_read_setting(const char* path, prn_conf_t type, void** data, UINT32* length)
{
DWORD lowSize, highSize;
DWORD read = 0;
BOOL rc = FALSE;
HANDLE file;
char* fdata = NULL;
const char* name = filemap[type];
char* abs = GetCombinedPath(path, name);
if (!abs)
return FALSE;
file = CreateFileA(abs, GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
free(abs);
if (file == INVALID_HANDLE_VALUE)
return FALSE;
lowSize = GetFileSize(file, &highSize);
if ((lowSize == INVALID_FILE_SIZE) || (highSize != 0))
goto fail;
if (lowSize != 0)
{
fdata = malloc(lowSize);
if (!fdata)
goto fail;
rc = ReadFile(file, fdata, lowSize, &read, NULL);
if (lowSize != read)
rc = FALSE;
}
fail:
CloseHandle(file);
if (rc && (lowSize <= INT_MAX))
{
int blen = 0;
crypto_base64_decode(fdata, (int)lowSize, (BYTE**)data, &blen);
if (*data && (blen > 0))
*length = (UINT32)blen;
else
{
rc = FALSE;
*length = 0;
}
}
else
{
*length = 0;
*data = NULL;
}
free(fdata);
return rc;
}
static BOOL printer_save_to_config(const rdpSettings* settings, const char* PortDosName,
size_t PortDosNameLen, const WCHAR* PnPName, size_t PnPNameLen,
const WCHAR* DriverName, size_t DriverNameLen,
const WCHAR* PrinterName, size_t PrintNameLen,
const BYTE* CachedPrinterConfigData, size_t CacheFieldsLen)
{
BOOL rc = FALSE;
char* path = get_printer_config_path(settings, PrinterName, PrintNameLen);
if (!path)
goto fail;
if (!printer_write_setting(path, PRN_CONF_PORT, PortDosName, PortDosNameLen))
goto fail;
if (!printer_write_setting(path, PRN_CONF_PNP, PnPName, PnPNameLen))
goto fail;
if (!printer_write_setting(path, PRN_CONF_DRIVER, DriverName, DriverNameLen))
goto fail;
if (!printer_write_setting(path, PRN_CONF_DATA, CachedPrinterConfigData, CacheFieldsLen))
goto fail;
fail:
free(path);
return rc;
}
static BOOL printer_update_to_config(const rdpSettings* settings, const WCHAR* name, size_t length,
const BYTE* data, size_t datalen)
{
BOOL rc = FALSE;
char* path = get_printer_config_path(settings, name, length);
rc = printer_write_setting(path, PRN_CONF_DATA, data, datalen);
free(path);
return rc;
}
static BOOL printer_remove_config(const rdpSettings* settings, const WCHAR* name, size_t length)
{
BOOL rc = FALSE;
char* path = get_printer_config_path(settings, name, length);
if (!printer_config_valid(path))
goto fail;
rc = winpr_RemoveDirectory(path);
fail:
free(path);
return rc;
}
static BOOL printer_move_config(const rdpSettings* settings, const WCHAR* oldName, size_t oldLength,
const WCHAR* newName, size_t newLength)
{
BOOL rc = FALSE;
char* oldPath = get_printer_config_path(settings, oldName, oldLength);
char* newPath = get_printer_config_path(settings, newName, newLength);
if (printer_config_valid(oldPath))
rc = winpr_MoveFile(oldPath, newPath);
free(oldPath);
free(newPath);
return rc;
}
static BOOL printer_load_from_config(const rdpSettings* settings, rdpPrinter* printer,
PRINTER_DEVICE* printer_dev)
{
BOOL res = FALSE;
WCHAR* wname = NULL;
size_t wlen;
char* path = NULL;
int rc;
UINT32 flags = 0;
void* DriverName = NULL;
UINT32 DriverNameLen = 0;
void* PnPName = NULL;
UINT32 PnPNameLen = 0;
void* CachedPrinterConfigData = NULL;
UINT32 CachedFieldsLen = 0;
UINT32 PrinterNameLen = 0;
if (!settings || !printer)
return FALSE;
rc = ConvertToUnicode(CP_UTF8, 0, printer->name, -1, &wname, 0);
if (rc <= 0)
goto fail;
wlen = _wcslen(wname) + 1;
path = get_printer_config_path(settings, wname, wlen * sizeof(WCHAR));
PrinterNameLen = (wlen + 1) * sizeof(WCHAR);
if (!path)
goto fail;
if (printer->is_default)
flags |= RDPDR_PRINTER_ANNOUNCE_FLAG_DEFAULTPRINTER;
if (!printer_read_setting(path, PRN_CONF_PNP, &PnPName, &PnPNameLen))
{
}
if (!printer_read_setting(path, PRN_CONF_DRIVER, &DriverName, &DriverNameLen))
{
DriverNameLen =
ConvertToUnicode(CP_UTF8, 0, printer->driver, -1, (LPWSTR*)&DriverName, 0) * 2 + 1;
}
if (!printer_read_setting(path, PRN_CONF_DATA, &CachedPrinterConfigData, &CachedFieldsLen))
{
}
Stream_SetPosition(printer_dev->device.data, 0);
if (!Stream_EnsureRemainingCapacity(printer_dev->device.data, 24))
goto fail;
Stream_Write_UINT32(printer_dev->device.data, flags);
Stream_Write_UINT32(printer_dev->device.data, 0); /* CodePage, reserved */
Stream_Write_UINT32(printer_dev->device.data, PnPNameLen); /* PnPNameLen */
Stream_Write_UINT32(printer_dev->device.data, DriverNameLen);
Stream_Write_UINT32(printer_dev->device.data, PrinterNameLen);
Stream_Write_UINT32(printer_dev->device.data, CachedFieldsLen);
if (!Stream_EnsureRemainingCapacity(printer_dev->device.data, PnPNameLen))
goto fail;
if (PnPNameLen > 0)
Stream_Write(printer_dev->device.data, PnPName, PnPNameLen);
if (!Stream_EnsureRemainingCapacity(printer_dev->device.data, DriverNameLen))
goto fail;
Stream_Write(printer_dev->device.data, DriverName, DriverNameLen);
if (!Stream_EnsureRemainingCapacity(printer_dev->device.data, PrinterNameLen))
goto fail;
Stream_Write(printer_dev->device.data, wname, PrinterNameLen);
if (!Stream_EnsureRemainingCapacity(printer_dev->device.data, CachedFieldsLen))
goto fail;
Stream_Write(printer_dev->device.data, CachedPrinterConfigData, CachedFieldsLen);
res = TRUE;
fail:
free(path);
free(wname);
free(PnPName);
free(DriverName);
free(CachedPrinterConfigData);
return res;
}
static BOOL printer_save_default_config(const rdpSettings* settings, rdpPrinter* printer)
{
BOOL res = FALSE;
WCHAR* wname = NULL;
WCHAR* driver = NULL;
size_t wlen, dlen;
char* path = NULL;
int rc;
if (!settings || !printer)
return FALSE;
rc = ConvertToUnicode(CP_UTF8, 0, printer->name, -1, &wname, 0);
if (rc <= 0)
goto fail;
rc = ConvertToUnicode(CP_UTF8, 0, printer->driver, -1, &driver, 0);
if (rc <= 0)
goto fail;
wlen = _wcslen(wname) + 1;
dlen = _wcslen(driver) + 1;
path = get_printer_config_path(settings, wname, wlen * sizeof(WCHAR));
if (!path)
goto fail;
if (dlen > 1)
{
if (!printer_write_setting(path, PRN_CONF_DRIVER, driver, dlen * sizeof(WCHAR)))
goto fail;
}
res = TRUE;
fail:
free(path);
free(wname);
free(driver);
return res;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT printer_process_irp_create(PRINTER_DEVICE* printer_dev, IRP* irp)
{
rdpPrintJob* printjob = NULL;
if (printer_dev->printer)
printjob =
printer_dev->printer->CreatePrintJob(printer_dev->printer, irp->devman->id_sequence++);
if (printjob)
{
Stream_Write_UINT32(irp->output, printjob->id); /* FileId */
}
else
{
Stream_Write_UINT32(irp->output, 0); /* FileId */
irp->IoStatus = STATUS_PRINT_QUEUE_FULL;
}
return irp->Complete(irp);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT printer_process_irp_close(PRINTER_DEVICE* printer_dev, IRP* irp)
{
rdpPrintJob* printjob = NULL;
if (printer_dev->printer)
printjob = printer_dev->printer->FindPrintJob(printer_dev->printer, irp->FileId);
if (!printjob)
{
irp->IoStatus = STATUS_UNSUCCESSFUL;
}
else
{
printjob->Close(printjob);
}
Stream_Zero(irp->output, 4); /* Padding(4) */
return irp->Complete(irp);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT printer_process_irp_write(PRINTER_DEVICE* printer_dev, IRP* irp)
{
UINT32 Length;
UINT64 Offset;
rdpPrintJob* printjob = NULL;
UINT error = CHANNEL_RC_OK;
void* ptr;
if (Stream_GetRemainingLength(irp->input) < 32)
return ERROR_INVALID_DATA;
Stream_Read_UINT32(irp->input, Length);
Stream_Read_UINT64(irp->input, Offset);
Stream_Seek(irp->input, 20); /* Padding */
ptr = Stream_Pointer(irp->input);
if (!Stream_SafeSeek(irp->input, Length))
return ERROR_INVALID_DATA;
if (printer_dev->printer)
printjob = printer_dev->printer->FindPrintJob(printer_dev->printer, irp->FileId);
if (!printjob)
{
irp->IoStatus = STATUS_UNSUCCESSFUL;
Length = 0;
}
else
{
error = printjob->Write(printjob, ptr, Length);
}
if (error)
{
WLog_ERR(TAG, "printjob->Write failed with error %" PRIu32 "!", error);
return error;
}
Stream_Write_UINT32(irp->output, Length);
Stream_Write_UINT8(irp->output, 0); /* Padding */
return irp->Complete(irp);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT printer_process_irp_device_control(PRINTER_DEVICE* printer_dev, IRP* irp)
{
Stream_Write_UINT32(irp->output, 0); /* OutputBufferLength */
return irp->Complete(irp);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT printer_process_irp(PRINTER_DEVICE* printer_dev, IRP* irp)
{
UINT error;
switch (irp->MajorFunction)
{
case IRP_MJ_CREATE:
if ((error = printer_process_irp_create(printer_dev, irp)))
{
WLog_ERR(TAG, "printer_process_irp_create failed with error %" PRIu32 "!", error);
return error;
}
break;
case IRP_MJ_CLOSE:
if ((error = printer_process_irp_close(printer_dev, irp)))
{
WLog_ERR(TAG, "printer_process_irp_close failed with error %" PRIu32 "!", error);
return error;
}
break;
case IRP_MJ_WRITE:
if ((error = printer_process_irp_write(printer_dev, irp)))
{
WLog_ERR(TAG, "printer_process_irp_write failed with error %" PRIu32 "!", error);
return error;
}
break;
case IRP_MJ_DEVICE_CONTROL:
if ((error = printer_process_irp_device_control(printer_dev, irp)))
{
WLog_ERR(TAG, "printer_process_irp_device_control failed with error %" PRIu32 "!",
error);
return error;
}
break;
default:
irp->IoStatus = STATUS_NOT_SUPPORTED;
return irp->Complete(irp);
break;
}
return CHANNEL_RC_OK;
}
static DWORD WINAPI printer_thread_func(LPVOID arg)
{
IRP* irp;
PRINTER_DEVICE* printer_dev = (PRINTER_DEVICE*)arg;
HANDLE obj[] = { printer_dev->event, printer_dev->stopEvent };
UINT error = CHANNEL_RC_OK;
while (1)
{
DWORD rc = WaitForMultipleObjects(2, obj, FALSE, INFINITE);
if (rc == WAIT_FAILED)
{
error = GetLastError();
WLog_ERR(TAG, "WaitForMultipleObjects failed with error %" PRIu32 "!", error);
break;
}
if (rc == WAIT_OBJECT_0 + 1)
break;
else if (rc != WAIT_OBJECT_0)
continue;
ResetEvent(printer_dev->event);
irp = (IRP*)InterlockedPopEntrySList(printer_dev->pIrpList);
if (irp == NULL)
{
WLog_ERR(TAG, "InterlockedPopEntrySList failed!");
error = ERROR_INTERNAL_ERROR;
break;
}
if ((error = printer_process_irp(printer_dev, irp)))
{
WLog_ERR(TAG, "printer_process_irp failed with error %" PRIu32 "!", error);
break;
}
}
if (error && printer_dev->rdpcontext)
setChannelError(printer_dev->rdpcontext, error, "printer_thread_func reported an error");
ExitThread(error);
return error;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT printer_irp_request(DEVICE* device, IRP* irp)
{
PRINTER_DEVICE* printer_dev = (PRINTER_DEVICE*)device;
InterlockedPushEntrySList(printer_dev->pIrpList, &(irp->ItemEntry));
SetEvent(printer_dev->event);
return CHANNEL_RC_OK;
}
static UINT printer_custom_component(DEVICE* device, UINT16 component, UINT16 packetId, wStream* s)
{
UINT32 eventID;
PRINTER_DEVICE* printer_dev = (PRINTER_DEVICE*)device;
const rdpSettings* settings = printer_dev->rdpcontext->settings;
if (component != RDPDR_CTYP_PRN)
return ERROR_INVALID_DATA;
if (Stream_GetRemainingLength(s) < 4)
return ERROR_INVALID_DATA;
Stream_Read_UINT32(s, eventID);
switch (packetId)
{
case PAKID_PRN_CACHE_DATA:
switch (eventID)
{
case RDPDR_ADD_PRINTER_EVENT:
{
char PortDosName[8];
UINT32 PnPNameLen, DriverNameLen, PrintNameLen, CacheFieldsLen;
const WCHAR *PnPName, *DriverName, *PrinterName;
const BYTE* CachedPrinterConfigData;
if (Stream_GetRemainingLength(s) < 24)
return ERROR_INVALID_DATA;
Stream_Read(s, PortDosName, sizeof(PortDosName));
Stream_Read_UINT32(s, PnPNameLen);
Stream_Read_UINT32(s, DriverNameLen);
Stream_Read_UINT32(s, PrintNameLen);
Stream_Read_UINT32(s, CacheFieldsLen);
if (Stream_GetRemainingLength(s) < PnPNameLen)
return ERROR_INVALID_DATA;
PnPName = (const WCHAR*)Stream_Pointer(s);
Stream_Seek(s, PnPNameLen);
if (Stream_GetRemainingLength(s) < DriverNameLen)
return ERROR_INVALID_DATA;
DriverName = (const WCHAR*)Stream_Pointer(s);
Stream_Seek(s, DriverNameLen);
if (Stream_GetRemainingLength(s) < PrintNameLen)
return ERROR_INVALID_DATA;
PrinterName = (const WCHAR*)Stream_Pointer(s);
Stream_Seek(s, PrintNameLen);
if (Stream_GetRemainingLength(s) < CacheFieldsLen)
return ERROR_INVALID_DATA;
CachedPrinterConfigData = Stream_Pointer(s);
Stream_Seek(s, CacheFieldsLen);
if (!printer_save_to_config(settings, PortDosName, sizeof(PortDosName), PnPName,
PnPNameLen, DriverName, DriverNameLen, PrinterName,
PrintNameLen, CachedPrinterConfigData,
CacheFieldsLen))
return ERROR_INTERNAL_ERROR;
}
break;
case RDPDR_UPDATE_PRINTER_EVENT:
{
UINT32 PrinterNameLen, ConfigDataLen;
const WCHAR* PrinterName;
const BYTE* ConfigData;
if (Stream_GetRemainingLength(s) < 8)
return ERROR_INVALID_DATA;
Stream_Read_UINT32(s, PrinterNameLen);
Stream_Read_UINT32(s, ConfigDataLen);
if (Stream_GetRemainingLength(s) < PrinterNameLen)
return ERROR_INVALID_DATA;
PrinterName = (const WCHAR*)Stream_Pointer(s);
Stream_Seek(s, PrinterNameLen);
if (Stream_GetRemainingLength(s) < ConfigDataLen)
return ERROR_INVALID_DATA;
ConfigData = Stream_Pointer(s);
Stream_Seek(s, ConfigDataLen);
if (!printer_update_to_config(settings, PrinterName, PrinterNameLen, ConfigData,
ConfigDataLen))
return ERROR_INTERNAL_ERROR;
}
break;
case RDPDR_DELETE_PRINTER_EVENT:
{
UINT32 PrinterNameLen;
const WCHAR* PrinterName;
if (Stream_GetRemainingLength(s) < 4)
return ERROR_INVALID_DATA;
Stream_Read_UINT32(s, PrinterNameLen);
if (Stream_GetRemainingLength(s) < PrinterNameLen)
return ERROR_INVALID_DATA;
PrinterName = (const WCHAR*)Stream_Pointer(s);
Stream_Seek(s, PrinterNameLen);
printer_remove_config(settings, PrinterName, PrinterNameLen);
}
break;
case RDPDR_RENAME_PRINTER_EVENT:
{
UINT32 OldPrinterNameLen, NewPrinterNameLen;
const WCHAR* OldPrinterName;
const WCHAR* NewPrinterName;
if (Stream_GetRemainingLength(s) < 8)
return ERROR_INVALID_DATA;
Stream_Read_UINT32(s, OldPrinterNameLen);
Stream_Read_UINT32(s, NewPrinterNameLen);
if (Stream_GetRemainingLength(s) < OldPrinterNameLen)
return ERROR_INVALID_DATA;
OldPrinterName = (const WCHAR*)Stream_Pointer(s);
Stream_Seek(s, OldPrinterNameLen);
if (Stream_GetRemainingLength(s) < NewPrinterNameLen)
return ERROR_INVALID_DATA;
NewPrinterName = (const WCHAR*)Stream_Pointer(s);
Stream_Seek(s, NewPrinterNameLen);
if (!printer_move_config(settings, OldPrinterName, OldPrinterNameLen,
NewPrinterName, NewPrinterNameLen))
return ERROR_INTERNAL_ERROR;
}
break;
default:
WLog_ERR(TAG, "Unknown cache data eventID: 0x%08" PRIX32 "", eventID);
return ERROR_INVALID_DATA;
}
break;
case PAKID_PRN_USING_XPS:
{
UINT32 flags;
if (Stream_GetRemainingLength(s) < 4)
return ERROR_INVALID_DATA;
Stream_Read_UINT32(s, flags);
WLog_ERR(TAG,
"Ignoring unhandled message PAKID_PRN_USING_XPS [printerID=%08" PRIx32
", flags=%08" PRIx32 "]",
eventID, flags);
}
break;
default:
WLog_ERR(TAG, "Unknown printing component packetID: 0x%04" PRIX16 "", packetId);
return ERROR_INVALID_DATA;
}
return CHANNEL_RC_OK;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT printer_free(DEVICE* device)
{
IRP* irp;
PRINTER_DEVICE* printer_dev = (PRINTER_DEVICE*)device;
UINT error;
SetEvent(printer_dev->stopEvent);
if (WaitForSingleObject(printer_dev->thread, INFINITE) == WAIT_FAILED)
{
error = GetLastError();
WLog_ERR(TAG, "WaitForSingleObject failed with error %" PRIu32 "", error);
/* The analyzer is confused by this premature return value.
* Since this case can not be handled gracefully silence the
* analyzer here. */
#ifndef __clang_analyzer__
return error;
#endif
}
while ((irp = (IRP*)InterlockedPopEntrySList(printer_dev->pIrpList)) != NULL)
irp->Discard(irp);
CloseHandle(printer_dev->thread);
CloseHandle(printer_dev->stopEvent);
CloseHandle(printer_dev->event);
_aligned_free(printer_dev->pIrpList);
if (printer_dev->printer)
printer_dev->printer->ReleaseRef(printer_dev->printer);
Stream_Free(printer_dev->device.data, TRUE);
free(printer_dev);
return CHANNEL_RC_OK;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT printer_register(PDEVICE_SERVICE_ENTRY_POINTS pEntryPoints, rdpPrinter* printer)
{
PRINTER_DEVICE* printer_dev;
UINT error = ERROR_INTERNAL_ERROR;
printer_dev = (PRINTER_DEVICE*)calloc(1, sizeof(PRINTER_DEVICE));
if (!printer_dev)
{
WLog_ERR(TAG, "calloc failed!");
return CHANNEL_RC_NO_MEMORY;
}
printer_dev->device.data = Stream_New(NULL, 1024);
if (!printer_dev->device.data)
goto error_out;
sprintf_s(printer_dev->port, sizeof(printer_dev->port), "PRN%" PRIdz, printer->id);
printer_dev->device.type = RDPDR_DTYP_PRINT;
printer_dev->device.name = printer_dev->port;
printer_dev->device.IRPRequest = printer_irp_request;
printer_dev->device.CustomComponentRequest = printer_custom_component;
printer_dev->device.Free = printer_free;
printer_dev->rdpcontext = pEntryPoints->rdpcontext;
printer_dev->printer = printer;
printer_dev->pIrpList = (WINPR_PSLIST_HEADER)_aligned_malloc(sizeof(WINPR_SLIST_HEADER),
MEMORY_ALLOCATION_ALIGNMENT);
if (!printer_dev->pIrpList)
{
WLog_ERR(TAG, "_aligned_malloc failed!");
error = CHANNEL_RC_NO_MEMORY;
goto error_out;
}
if (!printer_load_from_config(pEntryPoints->rdpcontext->settings, printer, printer_dev))
goto error_out;
InitializeSListHead(printer_dev->pIrpList);
if (!(printer_dev->event = CreateEvent(NULL, TRUE, FALSE, NULL)))
{
WLog_ERR(TAG, "CreateEvent failed!");
error = ERROR_INTERNAL_ERROR;
goto error_out;
}
if (!(printer_dev->stopEvent = CreateEvent(NULL, TRUE, FALSE, NULL)))
{
WLog_ERR(TAG, "CreateEvent failed!");
error = ERROR_INTERNAL_ERROR;
goto error_out;
}
if ((error = pEntryPoints->RegisterDevice(pEntryPoints->devman, (DEVICE*)printer_dev)))
{
WLog_ERR(TAG, "RegisterDevice failed with error %" PRIu32 "!", error);
goto error_out;
}
if (!(printer_dev->thread =
CreateThread(NULL, 0, printer_thread_func, (void*)printer_dev, 0, NULL)))
{
WLog_ERR(TAG, "CreateThread failed!");
error = ERROR_INTERNAL_ERROR;
goto error_out;
}
printer->AddRef(printer);
return CHANNEL_RC_OK;
error_out:
printer_free(&printer_dev->device);
return error;
}
static rdpPrinterDriver* printer_load_backend(const char* backend)
{
typedef rdpPrinterDriver* (*backend_load_t)(void);
union {
PVIRTUALCHANNELENTRY entry;
backend_load_t backend;
} fktconv;
fktconv.entry = freerdp_load_channel_addin_entry("printer", backend, NULL, 0);
if (!fktconv.entry)
return NULL;
return fktconv.backend();
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
UINT
#ifdef BUILTIN_CHANNELS
printer_DeviceServiceEntry
#else
FREERDP_API
DeviceServiceEntry
#endif
(PDEVICE_SERVICE_ENTRY_POINTS pEntryPoints)
{
int i;
char* name;
char* driver_name;
BOOL default_backend = TRUE;
RDPDR_PRINTER* device = NULL;
rdpPrinterDriver* driver = NULL;
UINT error = CHANNEL_RC_OK;
if (!pEntryPoints || !pEntryPoints->device)
return ERROR_INVALID_PARAMETER;
device = (RDPDR_PRINTER*)pEntryPoints->device;
name = device->Name;
driver_name = _strdup(device->DriverName);
/* Secondary argument is one of the following:
*
* <driver_name> ... name of a printer driver
* <driver_name>:<backend_name> ... name of a printer driver and local printer backend to use
*/
if (driver_name)
{
char* sep = strstr(driver_name, ":");
if (sep)
{
const char* backend = sep + 1;
*sep = '\0';
driver = printer_load_backend(backend);
default_backend = FALSE;
}
}
if (!driver && default_backend)
{
const char* backend =
#if defined(WITH_CUPS)
"cups"
#elif defined(_WIN32)
"win"
#else
""
#endif
;
driver = printer_load_backend(backend);
}
if (!driver)
{
WLog_ERR(TAG, "Could not get a printer driver!");
error = CHANNEL_RC_INITIALIZATION_ERROR;
goto fail;
}
if (name && name[0])
{
rdpPrinter* printer = driver->GetPrinter(driver, name, driver_name);
if (!printer)
{
WLog_ERR(TAG, "Could not get printer %s!", name);
error = CHANNEL_RC_INITIALIZATION_ERROR;
goto fail;
}
if (!printer_save_default_config(pEntryPoints->rdpcontext->settings, printer))
{
error = CHANNEL_RC_INITIALIZATION_ERROR;
printer->ReleaseRef(printer);
goto fail;
}
if ((error = printer_register(pEntryPoints, printer)))
{
WLog_ERR(TAG, "printer_register failed with error %" PRIu32 "!", error);
printer->ReleaseRef(printer);
goto fail;
}
}
else
{
rdpPrinter** printers = driver->EnumPrinters(driver);
rdpPrinter** current = printers;
for (i = 0; current[i]; i++)
{
rdpPrinter* printer = current[i];
if ((error = printer_register(pEntryPoints, printer)))
{
WLog_ERR(TAG, "printer_register failed with error %" PRIu32 "!", error);
break;
}
}
driver->ReleaseEnumPrinters(printers);
}
fail:
free(driver_name);
if (driver)
driver->ReleaseRef(driver);
return error;
}
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