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- /* OpenDoors Online Software Programming Toolkit
- * (C) Copyright 1991 - 1999 by Brian Pirie.
- *
- * Oct-2001 door32.sys/socket modifications by Rob Swindell (www.synchro.net)
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- *
- * File: ODCore.c
- *
- * Description: Implements the core of OpenDoors, including chat mode
- * and standard input/output functions that are
- * used throughout OpenDoors.
- *
- * Revisions: Date Ver Who Change
- * ---------------------------------------------------------------
- * Oct 13, 1994 6.00 BP New file header format.
- * Oct 19, 1994 6.00 BP Changed paging hours logic.
- * Oct 21, 1994 6.00 BP Further isolated com routines.
- * Oct 22, 1994 6.00 BP Name case conversion /w punct.
- * Dec 08, 1994 6.00 BP Allow custom chat mode deactivation.
- * Dec 09, 1994 6.00 BP Remove global dir entry structure.
- * Dec 13, 1994 6.00 BP Remove include of dir.h.
- * Dec 31, 1994 6.00 BP Remove #ifndef USEINLINE DOS code.
- * Dec 31, 1994 6.00 BP Remove old multitasker definitions.
- * Jan 01, 1995 6.00 BP Don't use ODComInbound().
- * Jan 01, 1995 6.00 BP _waitdrain() -> ODWaitDrain().
- * Jan 01, 1995 6.00 BP Use new millisecond timer functions.
- * Jan 01, 1995 6.00 BP Remove od_init() from _remotechar()
- * Jan 01, 1995 6.00 BP Split off odkrnl.c from odcore.c
- * Aug 19, 1995 6.00 BP 32-bit portability.
- * Nov 11, 1995 6.00 BP Moved first_word() to odlist.c
- * Nov 11, 1995 6.00 BP Removed register keyword.
- * Nov 14, 1995 6.00 BP Added include of odscrn.h.
- * Nov 16, 1995 6.00 BP Create odcore.h.
- * Nov 17, 1995 6.00 BP Use new input queue mechanism.
- * Dec 12, 1995 6.00 BP Added od_set_color().
- * Dec 12, 1995 6.00 BP Added entry, exit and kernel macros.
- * Dec 13, 1995 6.00 BP Moved chat mode code to ODKrnl.h.
- * Dec 19, 1995 6.00 BP Request reason for chat outside hours.
- * Dec 23, 1995 6.00 BP Allow space to continue at page pause.
- * Dec 24, 1995 6.00 BP Added abtGreyBlock.
- * Dec 30, 1995 6.00 BP Added ODCALL for calling convention.
- * Jan 03, 1996 6.00 BP Use OD_API_VAR_DEFN for od_control.
- * Jan 04, 1996 6.00 BP tODInQueueEvent -> tODInputEvent.
- * Jan 23, 1996 6.00 BP No od_set_statusline() under Win32.
- * Jan 30, 1996 6.00 BP Replaced od_yield() with od_sleep().
- * Jan 30, 1996 6.00 BP Add ODInQueueGetNextEvent() timeout.
- * Jan 09, 1996 6.00 BP ODComOutbound() returns actual size.
- * Jan 09, 1996 6.00 BP Reduce kernel calls from od_disp...().
- * Feb 19, 1996 6.00 BP Changed version number to 6.00.
- * Mar 03, 1996 6.10 BP Begin version 6.10.
- * Mar 19, 1996 6.10 BP MSVC15 source-level compatibility.
- * Mar 21, 1996 6.10 BP Added od_control_get().
- * Sep 01, 1996 6.10 BP Update output area on od_set_per...().
- * Oct 19, 2001 6.20 RS od_get_key now ignores linefeeds.
- */
-
- #define BUILDING_OPENDOORS
-
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <ctype.h>
- #include <time.h>
- #include <errno.h>
-
- #include "OpenDoor.h"
- #include "ODGen.h"
- #include "ODPlat.h"
- #include "ODCom.h"
- #include "ODKrnl.h"
- #include "ODScrn.h"
- #include "ODCore.h"
- #include "ODInQue.h"
- #ifdef ODPLAT_WIN32
- #include "ODFrame.h"
- #endif /* ODPLAT_WIN32 */
-
-
- /* GLOBAL VARIABLES SHARED THROUGHOUT OPENDOORS. */
-
- /* Global declaration of the OpenDoors control structure. */
- OD_API_VAR_DEFN tODControl
- #ifndef _WIN32 /* warning C4229: anachronism used : modifiers on data are ignored */
- OD_GLOBAL_CONV
- #endif
- od_control;
-
- /* OpenDoors global initialized flag. */
- BOOL bODInitialized = FALSE;
-
- /* Global serial port object handle. */
- tPortHandle hSerialPort;
-
- /* Global input queue object handle. */
- tODInQueueHandle hODInputQueue;
-
- /* Reentrancy control. */
- BOOL bIsCallbackActive = FALSE;
- BOOL bShellChatActive = FALSE;
-
- /* Global working space. */
- char szODWorkString[OD_GLOBAL_WORK_STRING_SIZE];
-
- /* Global instance of the text information structure for general use. */
- tODScrnTextInfo ODTextInfo;
-
- /* Logfile function hooks. */
- BOOL (*pfLogWrite)(INT) = NULL;
- void (*pfLogClose)(INT) = NULL;
-
- /* od_color_config() support for od_printf(). */
- char chColorCheck = 0;
- char *pchColorEndPos;
-
- /* Status line information. */
- BYTE btCurrentStatusLine = STATUS_NONE;
- OD_PERSONALITY_CALLBACK *pfCurrentPersonality = NULL;
- char szDesiredPersonality[33] = "";
- extern SET_PERSONALITY_FUNC *pfSetPersonality = NULL;
-
- /* Commonly used character sequences. */
- char abtBlackBlock[2] = {' ', 0x07};
- char abtGreyBlock[2] = {' ', 0x70};
- char szBackspaceWithDelete[4] = {8, ' ', 8, 0};
-
- /* Current output area on screen. */
- BYTE btOutputTop = 1;
- BYTE btOutputBottom = 23;
-
-
- /* PRIVATE VARIABLES. */
-
- /* Display color varaibles. */
- char bAnyColorChangeYet;
-
- /* Static character sequences. */
- static char szClearScreen[2] = {12, 0};
-
- /* Lookup table to map colors from PC values to ANSI color values. */
- static BYTE abtPCToANSIColorTable[8] = {30, 34, 32, 36, 31, 35, 33, 37};
-
-
- /* LOCAL HELPER FUNCTIONS. */
- static void ODAddANSIParameter(char *szControlSequence, int nParameterValue);
-
-
- /* ----------------------------------------------------------------------------
- * ODWaitDrain()
- *
- * Waits for up to the specified number of milliseconds for the output serial
- * buffer to drain.
- *
- * Parameters: MaxWait - Specifies the maximum number of milliseconds to wait
- * before timing out.
- *
- * Return: void
- */
- void ODWaitDrain(tODMilliSec MaxWait)
- {
- int nOutboundSize;
- tODTimer Timer;
-
- /* If we are operating in local mode, then don't do anything. */
- if(od_control.baud == 0) return;
-
- /* Otherwise, start a timer that is set to elapse after the maximum */
- /* wait period. */
- ODTimerStart(&Timer, MaxWait);
-
- /* Loop until either the outbound buffer is empty, or the */
- /* timer has elapsed. */
- for(;;)
- {
- /* Check whether any data is in the outbound serial queue. */
- ODComOutbound(hSerialPort, &nOutboundSize);
-
- /* If the queue is empty or the timer has elapsed, then stop */
- /* waiting. */
- if(nOutboundSize == 0 || ODTimerElapsed(&Timer)) break;
-
- /* Otherwise, give other tasks a chance to run. */
- od_sleep(0);
-
- /* Give od_kernel() activities a chance to run. */
- CALL_KERNEL_IF_NEEDED();
- }
- }
-
-
- /* ----------------------------------------------------------------------------
- * od_clr_scr()
- *
- * Clears the contents of the local and remote screens, if screen clearing is
- * enabled.
- *
- * Parameters: none
- *
- * Return: void
- */
- ODAPIDEF void ODCALL od_clr_scr(void)
- {
- INT16 nOriginalAttrib;
-
- /* Log function entry if running in trace mode */
- TRACE(TRACE_API, "od_clr_scr()");
-
- if(!bODInitialized) od_init();
-
- OD_API_ENTRY();
-
- /* Don't clear screen if disabled. */
- if(!od_control.od_always_clear && !(od_control.user_attribute & 2)
- && (od_control.od_extended_info || od_control.od_info_type == CUSTOM))
- {
- OD_API_EXIT();
- return;
- }
-
- if(od_control.user_rip)
- {
- od_disp("!|*", 3, FALSE);
- if(!od_control.od_default_rip_win)
- {
- od_disp("!|w0000270M12", 13, FALSE);
- }
- }
-
- /* Send ascii 12 to modem, no local echo. */
- od_disp(szClearScreen, 1, FALSE);
-
- /* Clear local window. */
- ODScrnClear();
-
- /* Get color set prior to screen clear. */
- nOriginalAttrib = od_control.od_cur_attrib;
-
- /* Current color state is unknown. */
- od_control.od_cur_attrib = -1;
-
- /* Set color to original value. This gurantees that local and */
- /* remote systems both have the same current color set. */
- od_set_attrib(nOriginalAttrib);
-
- OD_API_EXIT();
- }
-
-
-
- /* ----------------------------------------------------------------------------
- * od_input_str()
- *
- * Allows the user to input a string up to the specified length, using
- * characters in the specified range. This string input function is designed
- * to be compatible with all terminal types.
- *
- * Parameters: pszInput - Pointer to string to store input in.
- *
- * nMaxLength - Maximum number of characters to permit the user
- * to input.
- *
- * chMin - The minimum character value to permit. This must
- * be at least ASCII 32.
- *
- * chMax - The maximum character value to permit.
- *
- * Return: void
- */
- ODAPIDEF void ODCALL od_input_str(char *pszInput,
- INT nMaxLength,
- unsigned char chMin,
- unsigned char chMax)
- {
- char chKeyPressed;
- INT nPosition;
-
- /* Log function entry if running in trace mode. */
- TRACE(TRACE_API, "od_input_str()");
-
- /* Initialize OpenDoors if it hasn't already been done. */
- if(!bODInitialized) od_init();
-
- OD_API_ENTRY();
-
- /* Start at the beginning of the string. */
- nPosition = 0;
-
- /* Check that input parameters are valid. */
- if(pszInput == NULL || nMaxLength < 1 || chMin > chMax)
- {
- od_control.od_error = ERR_PARAMETER;
- OD_API_EXIT();
- return;
- }
-
- for(;;)
- {
- chKeyPressed = od_get_key(TRUE);
-
- /* If user pressed enter. */
- if(chKeyPressed == '\r' || chKeyPressed == '\n')
- {
- /* Terminate the string. */
- pszInput[nPosition] = '\0';
-
- /* Display CR-LF sequence. */
- od_disp_str("\n\r");
-
- /* Exit the function. */
- OD_API_EXIT();
- return;
- }
-
- /* If the user pressed backspace. */
- else if(chKeyPressed == 8)
- {
- /* If we are not currently at the beginning of the string. */
- if(nPosition > 0)
- {
- /* Send backspace sequence. */
- od_disp_str(szBackspaceWithDelete);
-
- /* Move current position back by one position in the string. */
- --nPosition;
- }
- }
-
- /* If this is a valid character to place in the string and we have */
- /* not reached the maximum size of the string yet. */
- else if(chKeyPressed >= chMin && chKeyPressed <= chMax
- && nPosition < nMaxLength)
- {
- /* Display key that was pressed. */
- od_putch(chKeyPressed);
-
- /* Add the entered character to the string and increment our */
- /* current position in the string. */
- pszInput[nPosition++] = chKeyPressed;
- }
- }
- }
-
-
- /* ----------------------------------------------------------------------------
- * od_clear_keybuffer()
- *
- * Clears any keystrokes from the inbound buffers. Both input from local and
- * remote systems is discarded, by clearing both OpenDoors' common input
- * event queue, and the serial port inbound buffer. This function is called
- * to cause any input by the user prior to the time the function was called
- * to be ignored.
- *
- * Parameters: none
- *
- * Return: void
- */
- ODAPIDEF void ODCALL od_clear_keybuffer(void)
- {
- /* Log function entry if running in trace mode. */
- TRACE(TRACE_API, "od_clear_keybuffer()");
-
- /* Initialize OpenDoors if it hasn't already been done. */
- if(!bODInitialized) od_init();
-
- OD_API_ENTRY();
-
- /* Empty any events in the common input event queue. */
- ODInQueueEmpty(hODInputQueue);
-
- /* If we are not operating in local mode ... */
- if(od_control.baud != 0)
- {
- /* ... then remove any items in the serial port inbound buffer. */
- ODComClearInbound(hSerialPort);
- }
-
- /* Call the OpenDoors kernel function. */
- CALL_KERNEL_IF_NEEDED();
-
- OD_API_EXIT();
- }
-
-
- /* ----------------------------------------------------------------------------
- * od_get_key()
- *
- * Inputs a single character, optionally waiting for the next character if no
- * character has been received yet. This function returns data received from
- * either the local or remote system, in the order in which it was received.
- *
- * Parameters: bWait - FALSE if od_get_key() should return right away with
- * a value of 0 if no characters have been received, or
- * TRUE if od_get_key() should wait for the next received
- * character.
- *
- * Return: Character that was received, or 0 if no character is waiting.
- */
- ODAPIDEF char ODCALL od_get_key(BOOL bWait)
- {
- tODInputEvent InputEvent;
-
- /* Initialize OpenDoors if it hasn't already been done. */
- if(!bODInitialized) od_init();
-
- /* Log function entry if running in trace mode. */
- TRACE(TRACE_API, "od_get_key()");
-
- OD_API_ENTRY();
-
- /* Call the OpenDoors kernel. */
- CALL_KERNEL_IF_NEEDED();
-
- /* If we aren't supposed to wait for input, then check whether any */
- /* input is waiting in the input queue, and if not return right away */
- /* without any data. */
- if(!bWait)
- {
- if(!ODInQueueWaiting(hODInputQueue))
- {
- OD_API_EXIT();
- return(0);
- }
- }
-
- do {
-
- /* Obtain the next character from the input queue. If we get to this */
- /* point and there is no data waiting in the input queue, then the */
- /* ODInQueueGetNextEvent() function will block until a character */
- /* is available in the input queue. */
- ODInQueueGetNextEvent(hODInputQueue, &InputEvent, OD_NO_TIMEOUT);
-
- /* Only keyboard input events are currently supported by od_get_key(). */
- ASSERT(InputEvent.EventType == EVENT_CHARACTER);
-
- /* Update OpenDoors control structure member that records whether the */
- /* last input came from the local or remote user. */
- od_control.od_last_input = InputEvent.bFromRemote ? 0 : 1;
-
- } while(InputEvent.chKeyPress == '\n'); /* Ignore line-feed char */
-
- /* Return the character that was pressed by the user. */
- OD_API_EXIT();
- return(InputEvent.chKeyPress);
- }
-
-
-
- /* ----------------------------------------------------------------------------
- * od_carrier()
- *
- * Allows programs to determine the current state of the carrier detect
- * signal when OpenDoors' automatic carrier detection has been disabled.
- *
- * Parameters: none
- *
- * Return: TRUE if the carrier detct signal is present, FALSE if it
- * isn't. When operating in local mode, this function always
- * returns FALSE.
- */
- ODAPIDEF BOOL ODCALL od_carrier(void)
- {
- BOOL bIsCarrier;
-
- /* Initialize OpenDoors if it hasn't already been done. */
- if(!bODInitialized) od_init();
-
- OD_API_ENTRY();
-
- /* Log function entry if running in trace mode */
- TRACE(TRACE_API, "od_carrier()");
-
- /* If we are operating in local mode, then return FALSE. */
- if(od_control.baud == 0)
- {
- od_control.od_error = ERR_NOREMOTE;
- OD_API_EXIT();
- return(FALSE);
- }
-
- /* In remote mode, obtain the current state of the carrier detect signal. */
- ODComCarrier(hSerialPort, &bIsCarrier);
-
- /* Return the current state of the carrier detect signal. */
- OD_API_EXIT();
- return(bIsCarrier);
- }
-
-
- /* ----------------------------------------------------------------------------
- * od_repeat()
- *
- * This function displays the same character the specified number of times on
- * the local and remote screens, using any available optimal control sequences
- * under the current display mode.
- *
- * Parameters: chValue - Character to repeat.
- *
- * btTimes - Number of times to repeat the character.
- *
- * Return: void
- */
- ODAPIDEF void ODCALL od_repeat(char chValue, BYTE btTimes)
- {
- char *pchCurStringPos;
- BYTE btLeft;
- char szBuffer[3];
-
- /* Log function entry if running in trace mode. */
- TRACE(TRACE_API, "od_repeat()");
-
- /* Ensure that OpenDoors has been initialized. */
- if(!bODInitialized) od_init();
-
- OD_API_ENTRY();
-
- /* If the caller asked to repeat the character 0 times, then we can */
- /* safely return right away without doing anything. */
- if(btTimes == 0)
- {
- OD_API_EXIT();
- return;
- }
-
- /* Generate string of repeat characters. */
- pchCurStringPos = szODWorkString;
- for(btLeft = btTimes; btLeft--;)
- {
- *pchCurStringPos++ = chValue;
- }
- *pchCurStringPos = '\0';
-
- /* Display repeated string on local screen. */
- ODScrnDisplayString(szODWorkString);
-
- /* If we are operating in AVATAR mode. */
- if(od_control.user_avatar)
- {
- /* Generate the AVATAR control sequence to repeat this character */
- /* the specified number of times. */
- szBuffer[0] = 25;
- szBuffer[1] = chValue;
- szBuffer[2] = btTimes;
- od_disp(szBuffer, 3, FALSE);
- }
-
- /* If AVATAR mode is not available. */
- else
- {
- /* Send the entire repeated string to the remote system. */
- od_disp(szODWorkString, btTimes, FALSE);
- }
-
- OD_API_EXIT();
- }
-
-
- /* ----------------------------------------------------------------------------
- * od_page()
- *
- * This function is called when the user wished to page the system operator.
- *
- * Parameters: none
- *
- * Return: void
- */
- ODAPIDEF void ODCALL od_page(void)
- {
- INT16 nCount;
- tODTimer Timer;
- time_t nUnixTime;
- struct tm *TimeBlock;
- INT16 nMinute;
- BOOL bFailed = FALSE;
- INT16 nOriginalAttrib;
-
- /* Log function entry if running in trace mode. */
- TRACE(TRACE_API, "od_page()");
-
- /* Initialize OpenDoors if it hasn't already been done. */
- if(!bODInitialized) od_init();
-
- OD_API_ENTRY();
-
- /* Save current display color attribute. */
- nOriginalAttrib = od_control.od_cur_attrib;
-
- /* Clear the screen. */
- od_clr_scr();
- od_set_attrib(od_control.od_chat_color1);
-
- /* Ask reason for chat. */
- od_disp_str(od_control.od_chat_reason);
- od_set_attrib(od_control.od_chat_color2);
- od_putch('[');
-
- /* Use extended ASCII characters if operating in ANSI or AVATAR mode. */
- if(od_control.user_ansi || od_control.user_avatar)
- {
- od_repeat('─',77);
- }
- else
- {
- od_repeat('-',77);
- }
- od_disp_str("]\n\r ");
- od_input_str(od_control.user_reasonforchat,77,32,255);
-
- /* If the user did not abort sysop paging by entering a blank reason */
- /* for chat. */
- if(strlen(od_control.user_reasonforchat) != 0)
- {
- /* Indicate that the user wants to chat. */
- od_control.user_wantchat = TRUE;
- #ifdef ODPLAT_WIN32
- ODFrameUpdateWantChat();
- #endif /* ODPLAT_WIN32 */
-
- /* Determine whether or not sysop paging should be permitted at */
- /* the current time. */
- nUnixTime = time(NULL);
- TimeBlock = localtime(&nUnixTime);
- nMinute = (60 * TimeBlock->tm_hour) + TimeBlock->tm_min;
- if(od_control.od_pagestartmin < od_control.od_pageendmin)
- {
- if(nMinute < od_control.od_pagestartmin
- || nMinute >= od_control.od_pageendmin)
- {
- bFailed = TRUE;
- }
- }
- else if(od_control.od_pagestartmin > od_control.od_pageendmin)
- {
- if(nMinute < od_control.od_pagestartmin
- && nMinute >= od_control.od_pageendmin)
- {
- bFailed = TRUE;
- }
- }
- else
- {
- bFailed = FALSE;
- }
-
- /* If paging is set to PAGE_ENABLE, meaning that sysop paging should */
- /* be permitted regardless of the time of day, then allow paging. */
- if(od_control.od_okaytopage == PAGE_ENABLE)
- {
- bFailed = FALSE;
- }
-
- /* If paging is explicitly disable by PAGE_DISABLE, or the current */
- /* time of the day is not normally permitted for paging. */
- if(od_control.od_okaytopage == PAGE_DISABLE || bFailed)
- {
- /* Indicate this to user. */
- od_disp_str("\n\r");
- od_disp_str(od_control.od_no_sysop);
- od_disp_str(od_control.od_press_key);
- od_get_answer("\x0d\x0a");
-
- /* Return from this function. */
- goto cleanup;
- }
-
- /* Update status line right away. */
- bForceStatusUpdate = TRUE;
- CALL_KERNEL_IF_NEEDED();
-
- /* Write sysop page information to the logfile, if the log file */
- /* system is hooked up. */
- if(pfLogWrite != NULL)
- {
- (*pfLogWrite)(8);
- }
-
- /* Tell the user that we are now paging the system operator. */
- od_set_attrib(od_control.od_chat_color1);
- od_disp_str(od_control.od_paging);
-
- #ifdef OD_TEXTMODE
- /* Display sysop page status line if it exists and the sysop status */
- /* line is currently active. */
- if(od_control.od_page_statusline != -1 && btCurrentStatusLine != 8)
- {
- od_set_statusline(od_control.od_page_statusline);
- }
- #endif /* OD_TEXTMODE */
-
- /* Increment the total number of times that the user has paged */
- /* the sysop. */
- ++od_control.user_numpages;
-
- /* Sysop hasn't responded yet. */
- bChatted=FALSE;
-
- /* Loop for length of sysop page. */
- for(nCount = 0; nCount < od_control.od_page_len; ++nCount)
- {
- /* Start a timer that is set to elapse in exactly one second. */
- ODTimerStart(&Timer, 1000);
-
- /* Display another period character. */
- od_putch('.');
-
- /* Abort page if system operator answered */
- if(bChatted) goto cleanup;
-
- /* Send beep to local and remote systems. */
- od_putch('\a');
-
- /* Check whether system operator has answered after playing beep. */
- if (bChatted) goto cleanup;
-
- /* Wait for the timer to elapse, calling od_kernel() so that */
- /* chat mode will start as soon as the sysop presses the */
- /* chat key. */
- while(!ODTimerElapsed(&Timer))
- {
- CALL_KERNEL_IF_NEEDED();
- }
- }
-
- /* If sysop page time has elapsed without a response from the */
- /* sysop, then notify the user. */
- od_disp_str(od_control.od_no_response);
- od_disp_str(od_control.od_press_key);
- od_get_answer("\x0d\x0a");
- od_disp_str("\n\r\n\r");
- }
-
- cleanup:
- /* Restore original display color attribute. */
- od_set_attrib(nOriginalAttrib);
-
- OD_API_EXIT();
- }
-
-
- /* ----------------------------------------------------------------------------
- * od_disp()
- *
- * Function to send one or more character to the remote system, optionally
- * also echoing the same characters to the local screen.
- *
- * Parameters: pachBuffer - Pointer to buffer of characters to send.
- *
- * nSize - Number of characters to send from the buffer.
- *
- * bLocalEcho - TRUE to also echo the characters to the local
- * screen, FALSE to just send the characters to the
- * remote system.
- *
- * Return: void
- */
- ODAPIDEF void ODCALL od_disp(char *pachBuffer, INT nSize, BOOL bLocalEcho)
- {
- /* Log function entry if running in trace mode. */
- TRACE(TRACE_API, "od_disp()");
-
- /* Initialize OpenDoors if it hasn't already been done. */
- if(!bODInitialized) od_init();
-
- OD_API_ENTRY();
-
- /* Call the OpenDoors kernel, if needed. */
- #ifndef OD_MULTITHREADED
- if(ODTimerElapsed(&RunKernelTimer))
- {
- CALL_KERNEL_IF_NEEDED();
- }
- #endif /* !OD_MULTITHREADED */
-
- /* If we are operating in remote mode, then send the buffer to the */
- /* remote system. */
- if(od_control.baud != 0)
- {
- ODComSendBuffer(hSerialPort, (BYTE *)pachBuffer, nSize);
- }
-
- /* If we are also to display the character on the local screen, then */
- /* display the buffer on the local screen. */
- if(bLocalEcho)
- {
- ODScrnDisplayBuffer(pachBuffer, nSize);
- }
-
- OD_API_EXIT();
- }
-
-
- /* ----------------------------------------------------------------------------
- * od_disp_str()
- *
- * Displays a string on both the local and remote systems.
- *
- * Parameters: pszToDisplay - Pointer to the string to be displayed.
- *
- * Return: void
- */
- ODAPIDEF void ODCALL od_disp_str(char *pszToDisplay)
- {
- /* Log function entry if running in trace mode */
- TRACE(TRACE_API, "od_disp_str()");
-
- /* Initialize OpenDoors if it hasn't already been done. */
- if(!bODInitialized) od_init();
-
- OD_API_ENTRY();
-
- /* Call the OpenDoors kernel, if needed. */
- #ifndef OD_MULTITHREADED
- if(ODTimerElapsed(&RunKernelTimer))
- {
- CALL_KERNEL_IF_NEEDED();
- }
- #endif /* !OD_MULTITHREADED */
-
- /* Send the string to the remote system, if we are running in remote mode. */
- if(od_control.baud != 0)
- {
- ODComSendBuffer(hSerialPort, (BYTE *)pszToDisplay, strlen(pszToDisplay));
- }
-
- /* Display the screen on the local screen. */
- ODScrnDisplayString(pszToDisplay);
-
- OD_API_EXIT();
- }
-
-
- /* ----------------------------------------------------------------------------
- * od_set_statusline()
- *
- * Switches to one of the available status lines provided by the current
- * personality, or turns off the status line altogether.
- *
- * Parameters: nSetting - Indicates which status line (if any) should be
- * activated.
- *
- * Return: void
- */
- ODAPIDEF void ODCALL od_set_statusline(INT nSetting)
- {
- #ifdef OD_TEXTMODE
- INT nDistance;
- BYTE btCount
- #endif /* OD_TEXTMODE */
-
- /* Log function entry if running in trace mode. */
- TRACE(TRACE_API, "od_set_statusline()");
-
- /* Initialize OpenDoors if it hasn't already been done. */
- if(!bODInitialized) od_init();
-
- OD_API_ENTRY()
-
- #ifdef OD_TEXTMODE
-
- /* If status line is disabled, then don't do anything. */
- if(!od_control.od_status_on)
- {
- OD_API_EXIT();
- return;
- }
-
- /* Ensure that the parameter is within the valid range. */
- if(nSetting < 0 || nSetting > 8)
- {
- nSetting = 0;
- }
-
- /* If the specified status line is already active, and status line */
- /* update isn't being forced, then return without doing anything. */
- if(!od_control.od_update_status_now && nSetting == btCurrentStatusLine)
- {
- OD_API_EXIT();
- return;
- }
-
- /* Save the current cursor settings. */
- ODStoreTextInfo();
-
- /* Reset screen boundary to allow access to the entire screen. */
- ODScrnSetBoundary(1,1,80,25);
-
- /* If status line is being turned off. */
- if(btCurrentStatusLine == STATUS_NONE)
- {
- if((nDistance = (INT)ODTextInfo.cury - ( 1 + (INT)btOutputBottom
- - (INT)btOutputTop)) > 0)
- {
- ODScrnCopyText(1, (BYTE)((INT)btOutputTop + nDistance), 80,
- (BYTE)((INT)btOutputBottom + nDistance), (BYTE)btOutputTop, 1);
- ODTextInfo.cury = 1 + btOutputBottom - btOutputTop;
- }
- else if(ODTextInfo.cury < btOutputTop)
- {
- ODTextInfo.cury = btOutputTop;
- ODScrnCopyText(1, (BYTE)(btOutputTop + 24 - btOutputBottom), 80, 25,
- btOutputTop, 1);
- }
- }
-
- od_control.od_current_statusline = btCurrentStatusLine = nSetting;
-
- if(nSetting == 8)
- {
- ODScrnSetAttribute(0x07);
-
- for(btCount = 1; btCount <= 25; ++btCount)
- {
- if(btCount < btOutputTop || btCount > btOutputBottom)
- {
- if(btCount == 25)
- {
- ODScrnPutText(80, 25, 80, 25, abtBlackBlock);
- ODScrnSetCursorPos(1, 25);
- ODScrnDisplayString(" ");
- }
- else
- {
- ODScrnSetCursorPos(1, 24);
- ODScrnDisplayString(" ");
- }
- }
- }
-
- ODScrnSetAttribute(ODTextInfo.attribute);
- ODScrnSetCursorPos(ODTextInfo.curx, ODTextInfo.cury);
- }
-
- else
- {
- ODScrnEnableCaret(FALSE);
- ODScrnEnableScrolling(FALSE);
-
- (*pfCurrentPersonality)((BYTE)nSetting);
-
- ODScrnEnableCaret(TRUE);
- ODScrnEnableScrolling(TRUE);
-
- ODScrnSetBoundary(1, btOutputTop, 80, btOutputBottom);
- ODScrnSetAttribute(ODTextInfo.attribute);
- ODScrnSetCursorPos(ODTextInfo.curx, ODTextInfo.cury);
- }
-
- #else /* !OD_TEXTMODE */
-
- od_control.od_error = ERR_UNSUPPORTED;
-
- #endif /* !OD_TEXTMODE */
-
- OD_API_EXIT();
- }
-
-
- /* ----------------------------------------------------------------------------
- * ODStoreTextInfo()
- *
- * Stores the current text settings into the OpenDoors global text information
- * structure.
- *
- * Parameters: none
- *
- * Return: void
- */
- void ODStoreTextInfo(void)
- {
- ODScrnGetTextInfo(&ODTextInfo);
- }
-
-
- /* ----------------------------------------------------------------------------
- * ODRestoreTextInfo()
- *
- * Restores display settings previously stored by ODStoreTextInfo()
- *
- * Parameters: none
- *
- * Return: void
- */
- void ODRestoreTextInfo(void)
- {
- ODScrnSetBoundary(ODTextInfo.winleft, ODTextInfo.wintop,
- ODTextInfo.winright, ODTextInfo.winbottom);
- ODScrnSetAttribute(ODTextInfo.attribute);
- ODScrnSetCursorPos(ODTextInfo.curx, ODTextInfo.cury);
- }
-
-
- /* ----------------------------------------------------------------------------
- * ODStringToName()
- *
- * Reformats a string so that it has the correct capitalization for a name,
- * and removes any trailing line break character.
- *
- * Parameters: pszToConvert - Pointer to the string to reformat.
- *
- * Return: void
- */
- void ODStringToName(char *pszToConvert)
- {
- /* Begin by changing the entire string to lower case. */
- strlwr(pszToConvert);
-
- /* Trim any newline character that may be at the end of the string. */
- if(pszToConvert[strlen(pszToConvert) - 1] == '\n')
- {
- pszToConvert[strlen(pszToConvert) - 1] = '\0';
- }
-
- /* Change the first character to lower case. */
- *pszToConvert = toupper(*pszToConvert);
-
- /* Loop through the rest of the string, capitalizing any other words */
- /* in the string. */
- while(*pszToConvert)
- {
- switch(*pszToConvert++)
- {
- case ' ':
- case '\t':
- case ',':
- case '.':
- case '-':
- *pszToConvert = toupper(*pszToConvert);
- break;
- }
- }
- }
-
-
- /* ----------------------------------------------------------------------------
- * od_set_color()
- *
- * Sets the current display color for both local and remote output.
- *
- * Parameters: nForeground - New foreground (text) color.
- *
- * nBackground - New background color.
- *
- * Return: void
- */
- ODAPIDEF void ODCALL od_set_color(INT nForeground, INT nBackground)
- {
- /* Use od_set_attrib() to perform the actual color setting. */
- /* Here, we rely on od_set_attrib() to look after initialization, */
- /* API_ENTRY() and API_EXIT() calls, etc. This allows od_set_color() */
- /* (which was previously just a macro) to be implemented with as */
- /* little overhead as possible. */
- od_set_attrib(nForeground | (nBackground << 4));
- }
-
-
- /* ----------------------------------------------------------------------------
- * od_set_attrib()
- *
- * Sets the current display color for both local and remote output.
- *
- * Parameters: nColor - New Display color to set, or -1 for no change.
- *
- * Return: void
- */
- ODAPIDEF void ODCALL od_set_attrib(INT nColor)
- {
- char szControlSequence[40];
-
- /* Log function entry if running in trace mode */
- TRACE(TRACE_API, "od_set_attrib()");
-
- /* Ensure that OpenDoors has been initialized. */
- if(!bODInitialized) od_init();
-
- OD_API_ENTRY();
-
- /* If color value is -1, then make no change. */
- if(nColor == -1)
- {
- OD_API_EXIT();
- return;
- }
-
- /* If we are operating in AVATAR mode. */
- if(od_control.user_avatar)
- {
- if(od_control.od_cur_attrib != nColor || od_control.od_full_color)
- {
- /* Change local text color. */
- ODScrnSetAttribute((BYTE)(od_control.od_cur_attrib = nColor));
-
- /* Generate AVATAR control sequence. */
- szControlSequence[0] = 22;
- szControlSequence[1] = 1;
- szControlSequence[2] = nColor;
-
- /* Send AVATAR control sequence. */
- od_disp(szControlSequence, 3, FALSE);
- }
- }
-
- /* If we are operating in ANSI mode. */
- else if(od_control.user_ansi)
- {
- bAnyColorChangeYet = FALSE;
-
- if(od_control.od_cur_attrib == -1 || od_control.od_full_color)
- {
- ansi_reset:
- /* Reset ANSI terminal status. */
- ODAddANSIParameter(szControlSequence, 0);
-
- /* If blink attribute is set. */
- if(nColor & 0x80)
- {
- /* Add it to the ANSI color sequence. */
- ODAddANSIParameter(szControlSequence, 5);
- }
-
- /* If high intensity attribute is set. */
- if(nColor & 0x08)
- {
- /* Add it to the ANSI color sequence. */
- ODAddANSIParameter(szControlSequence, 1);
- }
- }
-
- /* If current color is known. */
- else
- {
- /* If have to reset flashing or bright. */
- if(((od_control.od_cur_attrib&0x80) &&
- !(nColor & 0x80)) || ((od_control.od_cur_attrib & 0x08)
- && !(nColor & 0x08)))
- {
- /* Must reset entire colour settings. */
- od_control.od_cur_attrib = -1;
- goto ansi_reset;
- }
-
- /* If flashing has to be turned on. */
- if((nColor & 0x80) != (od_control.od_cur_attrib & 0x80))
- {
- /* Add it to the ANSI color sequence. */
- ODAddANSIParameter(szControlSequence, 5);
- }
-
- /* If bright has to be turned on. */
- if((nColor & 0x08) != (od_control.od_cur_attrib & 0x08)
- || od_control.od_cur_attrib == -1)
- {
- /* Add it to the ANSI color sequence. */
- ODAddANSIParameter(szControlSequence, 1);
- }
- }
-
-
- /* If foreground color has changed. */
- if((nColor & 0x07) != (od_control.od_cur_attrib & 0x07)
- || od_control.od_cur_attrib == -1 || od_control.od_full_color)
- {
- /* Add translated color to sequence. */
- ODAddANSIParameter(szControlSequence,
- abtPCToANSIColorTable[nColor&0x07]);
- }
-
- /* If background color has changed. */
- if((nColor & 0x70) != (od_control.od_cur_attrib & 0x70)
- || od_control.od_cur_attrib == -1 || od_control.od_full_color)
- {
- /* Add translated color to sequence. */
- ODAddANSIParameter(szControlSequence,
- abtPCToANSIColorTable[(nColor & 0x70) >> 4] + 10);
- }
-
- /* If any change in color. */
- if(bAnyColorChangeYet)
- {
- /* Append change-attribute command. */
- strcat(szControlSequence, "m");
-
- /* Send ANSI sequence to the modem. */
- od_disp(szControlSequence, strlen(szControlSequence), FALSE);
- }
-
- /* Change local text color. */
- ODScrnSetAttribute((BYTE)(od_control.od_cur_attrib = nColor));
- }
- else
- {
- od_control.od_error = ERR_NOGRAPHICS;
- }
-
- OD_API_EXIT();
- }
-
-
- /* ----------------------------------------------------------------------------
- * ODAddANSIParameter() *** PRIVATE FUNCTION ***
- *
- * Adds a parameter to an ANSI color sequence.
- *
- * Parameters: szControlSequence - The contents of the control sequence string
- * generated so far.
- *
- * nParameterValue - Value of the parameter to add.
- *
- * Return: void
- */
- static void ODAddANSIParameter(char *szControlSequence, int nParameterValue)
- {
- char szTemp[5];
-
- if(bAnyColorChangeYet)
- {
- sprintf(szTemp, ";%d", nParameterValue);
- strcat(szControlSequence, szTemp);
- }
- else
- {
- bAnyColorChangeYet = TRUE;
- sprintf(szControlSequence, "x[%d", nParameterValue);
- szControlSequence[0] = 27;
- }
- }
-
-
- /* ----------------------------------------------------------------------------
- * od_putch()
- *
- * Displays a character on the local and remote screens.
- *
- * Parameters: chToDisplay - The character to display.
- *
- * Return: void
- */
- ODAPIDEF void ODCALL od_putch(char chToDisplay)
- {
- /* Log function entry if running in trace mode. */
- TRACE(TRACE_API, "od_putch()");
-
- /* Initialize OpenDoors if it hasn't been done already. */
- if(!bODInitialized) od_init();
-
- OD_API_ENTRY();
-
- /* Display the character on the local screen. */
- ODScrnDisplayChar(chToDisplay);
-
- /* If not operating in local mode, then send the character to the */
- /* serial port. */
- if(od_control.baud)
- {
- ODComSendByte(hSerialPort, chToDisplay);
- }
-
- /* If it is time to call the kernel, then do so. */
- if(ODTimerElapsed(&RunKernelTimer))
- {
- CALL_KERNEL_IF_NEEDED();
- }
-
- OD_API_EXIT();
- }
-
-
- /* ----------------------------------------------------------------------------
- * od_set_dtr()
- *
- * Changes the state of the DTR line to the modem, if not running in local
- * mode.
- *
- * Parameters: bHigh - TRUE to raise DTR, FALSE to lower it.
- *
- * Return: void
- */
- ODAPIDEF void ODCALL od_set_dtr(BOOL bHigh)
- {
- /* Log function entry if running in trace mode. */
- TRACE(TRACE_API, "od_set_dtr()");
-
- /* Initialize OpenDoors if it hasn't already been done. */
- if(!bODInitialized) od_init();
-
- OD_API_ENTRY();
-
- /* If we are running in local mode, then return with an error. */
- if(!od_control.baud)
- {
- od_control.od_error = ERR_NOREMOTE;
- OD_API_EXIT();
- return;
- }
-
- /* Otherwise, change the state of the DTR line. */
- ODComSetDTR(hSerialPort, bHigh);
-
- OD_API_EXIT();
- }
-
-
- /* ----------------------------------------------------------------------------
- * od_get_answer()
- *
- * Waits for the user to press one of the keys listed in pszOptions. Case is
- * not sensitive, although the pressed key is returned in the same case as it
- * is specified in pszOptions.
- *
- * Parameters: pszOptions - String listing characters to accept.
- *
- * Return: void
- */
- ODAPIDEF char ODCALL od_get_answer(char *pszOptions)
- {
- char *pchPossibleOption;
- char chPressed;
-
- /* Log function entry if running in trace mode. */
- TRACE(TRACE_API, "od_get_answer()");
-
- /* Initialize OpenDoors if it hasn't already been done. */
- if(!bODInitialized) od_init();
-
- OD_API_ENTRY();
-
- for(;;)
- {
- /* Wait for the next key press by the user. */
- chPressed = od_get_key(TRUE);
- chPressed = tolower(chPressed);
-
- /* Loop through list of possible options. */
- pchPossibleOption = (char *)pszOptions;
- while(*pchPossibleOption)
- {
- /* If the key pressed matches this possible option. */
- if(tolower(*pchPossibleOption) == chPressed)
- {
- /* Then return the character in the case originally specified */
- /* by the caller. */
- OD_API_EXIT();
- return(*pchPossibleOption);
- }
-
- /* Move on to the next possible option. */
- ++pchPossibleOption;
- }
-
- /* If the key pressed did not match a possible option, then we */
- /* just loop again, getting the next key. */
- }
- }
-
-
- /* ----------------------------------------------------------------------------
- * od_color_config()
- *
- * Determines the color attribute that is described by the provided string.
- * This string is in the same format that is used for specifying colors in the
- * OpenDoors configuration file.
- *
- * Parameters: pszColorDesc - Color description string.
- *
- * Return: The PC-style color attribute corresponding to the color
- * description string.
- */
- ODAPIDEF BYTE ODCALL od_color_config(char *pszColorDesc)
- {
- BYTE btColor = 0x07;
- char szToken[40];
- char *pszStart=(char *)pszColorDesc;
- char *pszEnd;
- BYTE btLength;
- BYTE btIdentifier;
- BOOL bForeground = TRUE;
-
- /* Log function entry if running in trace mode. */
- TRACE(TRACE_API, "od_color_config()");
-
- /* Initialize OpenDoros if it hasn't already been done. */
- if(!bODInitialized) od_init();
-
- OD_API_ENTRY();
-
- while(*pszStart && *pszStart!=chColorCheck)
- {
- if(*pszStart == ' ' || *pszStart== '\t')
- {
- ++pszStart;
- }
- else
- {
- btLength = 0;
- pszEnd = (char *)pszStart;
- while(*pszEnd && *pszEnd != chColorCheck && *pszEnd != ' '
- && *pszEnd != '\t')
- {
- ++btLength;
- ++pszEnd;
- }
-
- if(btLength > 39) btLength = 39;
- strncpy(szToken, pszStart, btLength);
- szToken[btLength] = '\0';
- strupr(szToken);
-
- for(btIdentifier = 0; btIdentifier < 12; ++btIdentifier)
- if(strcmp(od_config_colours[btIdentifier], szToken) == 0)
- {
- if(btIdentifier <= 9)
- {
- if(btIdentifier >= 8) btIdentifier -= 2;
-
- if(bForeground)
- {
- bForeground=FALSE;
- btColor &=~ 0x07;
- btColor |= btIdentifier;
- }
- else
- {
- btColor &=~ 0x70;
- btColor |= (btIdentifier << 4);
- }
- }
-
- else if(btIdentifier == 10)
- {
- btColor |= 0x08;
- }
-
- else if(btIdentifier == 11)
- {
- btColor |= 0x80;
- }
-
- break;
- }
-
- pszStart = (char *)pszEnd;
- }
- }
-
- pchColorEndPos = (char *)pszStart;
-
- OD_API_EXIT();
-
- return(btColor);
- }
-
-
- /* ----------------------------------------------------------------------------
- * ODPagePrompt()
- *
- * Called to display the page prompt at the end of a screen of text. This page
- * prompt allows the user to stop further display, to display the next page,
- * or to display in continuous (non-stop) mode with page pausing disabled.
- *
- * Parameters: pbPausing - Pointer to current page pausing enabled flag.
- *
- * Return: FALSE if display should be continued, or TRUE to abort display.
- */
- BOOL ODPagePrompt(BOOL *pbPausing)
- {
- INT nPromptLength = strlen(od_control.od_continue);
- tODScrnTextInfo TextInfo;
- BOOL bToReturn = FALSE;
- char chKeyPressed;
- BYTE btCount;
-
- /* Return right away if page pausing is disabled. */
- if(!*pbPausing) return(FALSE);
-
- /* Get current text color. */
- ODScrnGetTextInfo(&TextInfo);
-
- /* Set to prompt color. */
- od_set_attrib(od_control.od_continue_col);
-
- /* Display page prompt string. */
- od_disp_str(od_control.od_continue);
-
- /* Restore original text color. */
- od_set_attrib(TextInfo.attribute);
-
- /* Loop until the user makes a valid choice. */
- for(;;)
- {
- /* Obtain the next key from the user. */
- chKeyPressed = od_get_key(TRUE);
-
- /* If user chooses to continue. */
- if(chKeyPressed == tolower(od_control.od_continue_yes) ||
- chKeyPressed == toupper(od_control.od_continue_yes) ||
- chKeyPressed == 13 ||
- chKeyPressed == ' ')
- {
- /* Remove the prompt and return. */
- goto finished_pausing;
- }
-
- /* If user requested nonstop display. */
- else if(chKeyPressed == tolower(od_control.od_continue_nonstop) ||
- chKeyPressed == toupper(od_control.od_continue_nonstop))
- {
- /* Disable page pausing. */
- *pbPausing = FALSE;
-
- /* Remove the prompt and return. */
- goto finished_pausing;
- }
-
- /* If user chooses to stop display. */
- else if(chKeyPressed == tolower(od_control.od_continue_no) ||
- chKeyPressed == toupper(od_control.od_continue_no) ||
- chKeyPressed == 's' || chKeyPressed == 'S' || chKeyPressed == 3
- || chKeyPressed == 11 || chKeyPressed == 0x18)
- {
- /* If we are operating in remote mode. */
- if(od_control.baud)
- {
- /* Clear the output buffer. */
- ODComClearOutbound(hSerialPort);
- }
-
- /* Tell the caller to stop displaying more text. */
- bToReturn = TRUE;
-
- /* Remove the prompt and return. */
- goto finished_pausing;
- }
- }
-
- finished_pausing:
- /* Remove the pause prompt. */
- for(btCount = 0; btCount < nPromptLength; ++btCount)
- {
- od_disp_str(szBackspaceWithDelete);
- }
-
- return(bToReturn);
- }
-
-
- /* ----------------------------------------------------------------------------
- * od_control_get()
- *
- * Returns a pointer to the od_control structure containing information
- * and settings associated with the current session.
- *
- * Parameters: None.
- *
- * Return: A pointer to the od_control structure associated with this
- * session.
- */
- ODAPIDEF tODControl * ODCALL od_control_get(void)
- {
- /* Log function entry if running in trace mode */
- TRACE(TRACE_API, "od_disp_str()");
-
- return(&od_control);
- }
-