/*
** Command & Conquer Red Alert(tm)
** Copyright 2025 Electronic Arts Inc.
**
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/***********************************************************************************************
*** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S ***
***********************************************************************************************
* *
* Project Name : Command & Conquer/ WW Library *
* *
* File Name : MODEMREG.CPP *
* *
* Programmer : Steve Tall *
* *
* Start Date : 10/18/96 *
* *
* Last Update : October 18th 1996 [ST] *
* *
*---------------------------------------------------------------------------------------------*
* Overview: *
* *
* Functions for obtaining modem infommation from the Win95 registry *
* *
* *
*---------------------------------------------------------------------------------------------*
* *
* Functions: *
* *
* Search_Registry_Key -- Search a registry key and all its subkeys for a given value *
* MREC::ModemRegistryEntryClass -- Constructor for ModemRegistryEntryClass *
* MREC::~ModemRegistryEntryClass -- Destructor.Free all the memory we allocated for modem info*
* *
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
#include "modemreg.h"
#include <stdio.h>
extern HKEY Get_Registry_Sub_Key (HKEY base_key, char *search_key, BOOL close);
/***********************************************************************************************
* Search_Registry_Key -- Search a registry key and all its subkeys for a given value *
* *
* *
* *
* INPUT: handle to key to search in *
* name of key to search for *
* value expected in key *
* *
* OUTPUT: Handle to key containing value. Null if not found. *
* *
* WARNINGS: This function reenters itself. *
* *
* HISTORY: *
* 10/18/96 4:01AM ST : Created *
*=============================================================================================*/
HKEY Search_Registry_Key (HKEY key_in, char *value_name, char *search_string)
{
int top_key_index = 0; // Index of topmost key
int retval; // Result of registry api calls
HKEY next_key; // handle of next key examine
HKEY next_search; // handle of next key to search
char *subkey_name = new char [256]; // Area to contain result of key enumeration
unsigned long subkey_name_length = 256; // Length of enumeration result area
FILETIME filetime; // Time key was last touched. Not used.
unsigned long value_type; // Type of data that is contained in a key.
unsigned char *key_value = new unsigned char [256]; // Area to return key values into
unsigned long key_value_length = 256; // Length of key value area
/*
** Scan through and enumerate all subkeys of this key. Exit the loop when there are
** no more sub keys to enumerate.
*/
do {
subkey_name_length = 256; // Has to be set each time through the loop
/*
** Get the next key
*/
retval = RegEnumKeyEx (key_in, top_key_index++, subkey_name, &subkey_name_length, NULL, NULL, NULL, &filetime);
if ( retval == ERROR_SUCCESS ){
/*
** Get a handle to this key so we can search it.
*/
next_key = Get_Registry_Sub_Key (key_in, subkey_name, FALSE);
if (next_key){
key_value_length = 256; // Has to be set each time through the loop
if ( RegQueryValueEx (next_key, value_name, NULL, &value_type, key_value, &key_value_length) == ERROR_SUCCESS){
/*
** If this value is type string then do a compare with the value we are looking for
*/
if (value_type == REG_SZ && !strcmp ((char*)key_value, search_string)){
/*
** This is our man. Delete our workspace and return the key handle
*/
delete [] subkey_name;
delete [] key_value;
return (next_key);
}
}
/*
** We didnt find our search value so search this key for more sub keys by reentering
** this function with the handle of the subkey.
*/
next_search = Search_Registry_Key (next_key, value_name, search_string);
RegCloseKey (next_key);
/*
** If the value was found in a subkey then just return with the key handle.
*/
if (next_search){
delete [] subkey_name;
delete [] key_value;
return (next_search);
}
}
}
} while (retval == ERROR_SUCCESS);
/*
** Clean up and exit.
*/
delete [] subkey_name;
delete [] key_value;
return (0);
}
/***********************************************************************************************
* MREC::ModemRegistryEntryClass -- Constructor for ModemRegistryEntryClass *
* *
* This function does all the work in the class. All the registry searching is done here *
* *
* INPUT: Modem number *
* *
* OUTPUT: Nothing *
* *
* WARNINGS: None *
* *
* HISTORY: *
* 10/18/96 4:12AM ST : Created *
*=============================================================================================*/
ModemRegistryEntryClass::ModemRegistryEntryClass (int modem_number)
{
HKEY key;
unsigned char return_buf[256];
DWORD retbuf_size = sizeof(return_buf);
int pnp = 0; //Not a plug n pray modem
/*
** Initialise all the info we expect from the registry to NULL.
** Any entries we cant find will just stay NULL.
*/
ModemName = NULL;
ModemDeviceName = NULL;
ErrorCorrectionEnable = NULL;
ErrorCorrectionDisable = NULL;
CompressionEnable = NULL;
CompressionDisable = NULL;
HardwareFlowControl = NULL;
NoFlowControl = NULL;
/*
** Modem info is stored under
** HKEY_LOCAL_MACHINE / System / CurrentControlSet / Services / Class / Modem / nnnn
** where nnnn is a four digit modem number.
*/
key = Get_Registry_Sub_Key (HKEY_LOCAL_MACHINE, "System", FALSE);
if (!key) return;
key = Get_Registry_Sub_Key (key, "CurrentControlSet", TRUE);
if (!key) return;
key = Get_Registry_Sub_Key (key, "Services", TRUE);
if (!key) return;
key = Get_Registry_Sub_Key (key, "Class", TRUE);
if (!key) return;
key = Get_Registry_Sub_Key (key, "Modem", TRUE);
if (!key) return;
char which_modem[5];
sprintf (which_modem, "%04d", modem_number);
/*
** Get a handle to the modem key if it exists. Then extract the info we need.
*/
key = Get_Registry_Sub_Key (key, which_modem, TRUE);
if (!key) return;
/*
** Get the name of the modem. This is what will be displayed in the modem list presented
** to the user.
*/
if (RegQueryValueEx(key, "Model", NULL, NULL, return_buf, &retbuf_size) != ERROR_SUCCESS){
RegCloseKey (key);
return;
}
ModemName = new char [retbuf_size];
memcpy (ModemName, return_buf, retbuf_size);
/*
** Find out what COM port the modem is attached to. If this info isnt here, then its a
** Plug n Pray modem. Set the flag so we know to do the pnp search later.
*/
retbuf_size = sizeof (return_buf);
if (RegQueryValueEx(key, "AttachedTo", NULL, NULL, return_buf, &retbuf_size) != ERROR_SUCCESS){
/*
** Must be a plug n pray modem. Set the flag. We will look for the port later.
*/
pnp = 1;
ModemDeviceName = new char [strlen (ModemName)+1];
strcpy (ModemDeviceName, ModemName);
}else{
ModemDeviceName = new char [retbuf_size];
memcpy (ModemDeviceName, return_buf, retbuf_size);
}
/*
** The list of modem 'AT' commands is stored in the 'Settings' key.
*/
key = Get_Registry_Sub_Key (key, "Settings", TRUE);
if (!key) return;
/*
** Extract the control strings for error control.
*/
retbuf_size = sizeof (return_buf);
if (RegQueryValueEx(key, "ErrorControl_On", NULL, NULL, return_buf, &retbuf_size) == ERROR_SUCCESS){
ErrorCorrectionEnable = new char [retbuf_size];
memcpy (ErrorCorrectionEnable, return_buf, retbuf_size);
}
retbuf_size = sizeof (return_buf);
if (RegQueryValueEx(key, "ErrorControl_Off", NULL, NULL, return_buf, &retbuf_size) == ERROR_SUCCESS){
ErrorCorrectionDisable = new char [retbuf_size];
memcpy (ErrorCorrectionDisable, return_buf, retbuf_size);
}
/*
** Extract the control strings for data compression.
*/
retbuf_size = sizeof (return_buf);
if (RegQueryValueEx(key, "Compression_On", NULL, NULL, return_buf, &retbuf_size) == ERROR_SUCCESS){
CompressionEnable = new char [retbuf_size];
memcpy (CompressionEnable, return_buf, retbuf_size);
}
retbuf_size = sizeof (return_buf);
if (RegQueryValueEx(key, "Compression_Off", NULL, NULL, return_buf, &retbuf_size) == ERROR_SUCCESS){
CompressionDisable = new char [retbuf_size];
memcpy (CompressionDisable, return_buf, retbuf_size);
}
/*
** Extract the control strings for hardware flow control.
*/
retbuf_size = sizeof (return_buf);
if (RegQueryValueEx(key, "FlowControl_Hard", NULL, NULL, return_buf, &retbuf_size) == ERROR_SUCCESS){
HardwareFlowControl = new char [retbuf_size];
memcpy (HardwareFlowControl, return_buf, retbuf_size);
}
/*
** Extract the control strings for no flow control.
*/
retbuf_size = sizeof (return_buf);
if (RegQueryValueEx(key, "FlowControl_Off", NULL, NULL, return_buf, &retbuf_size) == ERROR_SUCCESS){
NoFlowControl = new char [retbuf_size];
memcpy (NoFlowControl, return_buf, retbuf_size);
}
RegCloseKey (key);
/*
** If this is a plug n pray modem then we need to search for the COM port it is
** attached to.
*/
if (pnp){
/*
** The driver name in the HKEY_LOCAL_MACHINE / Enum section will be Modem\nnnn where nnnn
** is a four digit modem number.
*/
char search_string [256] = {"Modem\\"};
strcat (search_string, which_modem);
/*
** Search through all the registry entries under HKEY_LOCAL_MACHINE / Enum
*/
key = Get_Registry_Sub_Key (HKEY_LOCAL_MACHINE, "Enum", FALSE);
if (!key) return;
HKEY newkey = Search_Registry_Key ( key, "Driver", search_string );
if (newkey){
retbuf_size = sizeof (return_buf);
/*
** Extract the PORTNAME value. This is the name of the port to use to communicate
** with the modem.
*/
retbuf_size = sizeof (return_buf);
if (RegQueryValueEx(newkey, "PORTNAME", NULL, NULL, return_buf, &retbuf_size) == ERROR_SUCCESS){
if (ModemDeviceName) delete [] ModemDeviceName;
ModemDeviceName = new char [retbuf_size];
memcpy (ModemDeviceName, return_buf, retbuf_size);
}
}
RegCloseKey (key);
}
}
/***********************************************************************************************
* MREC::~ModemRegistryEntryClass -- Destructor.Free all the memory we allocated for modem info*
* *
* *
* *
* INPUT: Nothing *
* *
* OUTPUT: Nothing *
* *
* WARNINGS: None *
* *
* HISTORY: *
* 10/18/96 11:39AM ST : Created *
*=============================================================================================*/
ModemRegistryEntryClass::~ModemRegistryEntryClass (void)
{
if (ModemName) delete [] ModemName;
if (ModemDeviceName) delete [] ModemDeviceName;
if (ErrorCorrectionEnable) delete [] ErrorCorrectionEnable;
if (ErrorCorrectionDisable) delete [] ErrorCorrectionDisable;
if (CompressionEnable) delete [] CompressionEnable;
if (CompressionDisable) delete [] CompressionDisable;
if (HardwareFlowControl) delete [] HardwareFlowControl;
if (NoFlowControl) delete [] NoFlowControl;
}