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- //////////////////////////////////////////////////////////////////////////////
- //
- // H O S T . S L T
- //
- // Copyright (C) 1988 PTel and Colin Sampaleanu
- //
- // This is a Host Mode for Telix, written as a script file.
- // To configure Host Mode parameters such as passwords, run the 'HCONFIG'
- // script. That script is run automatically if the Host Mode configuration
- // file 'HOST.CNF' is missing.
- //
- // This script will only work with Hayes compatible modems, but may be
- // modified for operation with other modems.
- //
- //////////////////////////////////////////////////////////////////////////////
-
- // Parameters which can be configured
-
- str pass1[8] = "pass1", // The level 1 pass
- pass2[8] = "pass2", // The level 2 (Sysop) pass
- shellpass[8] = "shell", // the pass to enter the Remote Shell
- shutpass[8] = "shut", // the pass to shut down the Host Mode
- host_downloads[64], // where users may download from
- host_uploads[64]; // where uploaded files go
- int direct_connect = 0;
-
- str current_caller[31], // storage of current caller's name
- conn300[] = "CONNECT^M", // modem result messages for bauds
- conn1200[] = "CONNECT 1200",
- conn2400[] = "CONNECT 2400",
- conn9600[] = "CONNECT 9600",
- conn19200[] = "CONNECT 19200";
- int finished_caller, // set to TRUE when must return to top
- local_mode, // set to TRUE when local test mode
- access_level, // access level of current caller
- carrier_counts = 1, // TRUE if should watch Carrier signal
- already_connected = 0,
- exit_requested = 0, // set to TRUE if Sysop has pressed Esc
- connection_lost = 0, // set to TRUE when carrier lost
- kill_user = 0; // set to TRUE when user must be purged
-
- int old_scr_chk_key, // storage for some system variables
- old_cisb_auto, // which we have to modify and put
- old_zmod_auto, // back to what they were when done
- old_sound;
- str old_down_dir[64],
- old_up_dir[64];
-
- //////////////////////////////////////////////////////////////////////////////
- //////////////////////////////////////////////////////////////////////////////
-
- main()
-
- {
- int c;
- int t;
-
- clear_scr();
-
- if (read_host_config_file() == -1)
- {
- prints("Unable to read HOST.CNF...");
- prints("Running HCONFIG, the Host Mode configuration script.^M^J");
- call("HCONFIG");
- if (read_host_config_file() == -1)
- {
- prints("Still unable to read HOST.CNF. Aborting Host Mode.^M^J");
- return -1;
- }
- }
-
- if (!check_directories())
- {
- prints("Either the upload or download directory as defined in the HOST.CNF file");
- prints("doesn't exist. Either create the missing directory with the DOS 'MKDIR'");
- prints("command, or run the HCONFIG script to redefine what directories to use.");
- prints("Aborting Host Mode.");
- return -1;
- }
-
- old_scr_chk_key = _scr_chk_key;
- _scr_chk_key = 0;
- old_cisb_auto = _cisb_auto;
- _cisb_auto = 0;
- old_zmod_auto = _zmod_auto;
- _zmod_auto = 0;
- old_sound = _sound_on;
- _sound_on = 0;
- old_down_dir = _down_dir;
- _down_dir = host_uploads; // these are reversed because we are now the Host
- old_up_dir = _up_dir;
- _up_dir = host_downloads; // these are reversed because we are now the Host
-
- usagelog("HOST.LOG");
-
- if (direct_connect)
- carrier_counts = 0;
- else
- carrier_counts = 1;
-
- if (!direct_connect && carrier())
- already_connected = 1;
-
- if (!direct_connect && !already_connected)
- {
- prints("Initializing modem");
- cputs_tr(_auto_ans_str);
- }
-
- while (1)
- {
- finished_caller = kill_user = 0;
-
- if (direct_connect)
- carrier_counts = 0;
- else
- carrier_counts = 1;
-
- if (!direct_connect)
- {
-
- clear_scr();
- t = timer_start(700);
-
- prints("^M^JHost Mode: Waiting for call...");
- prints("(Press Esc to exit, or 'L' for local test mode).^M^J");
-
- do
- {
- if (carrier())
- {
- local_mode = 0;
- break;
- }
-
- if (time_up(t)) {
- Exittelix (0);
- }
-
- c = inkey();
- if (c)
- {
- if (c == 27)
- {
- exit_requested = 1;
- break;
- }
- else if (c == 'l' || c == 'L') // local teswt mode
- {
- prints("Local test mode entered");
- local_mode = 1;
- carrier_counts = 0;
- }
- }
- }
- while (toupper(c) != 'L');
- timer_free(t);
- }
-
- if (!exit_requested)
- {
- prints("Incoming call. Sysop: press Esc to exit, or END to terminate user.");
-
- do_one_caller();
- if ((connection_lost || kill_user) && carrier_counts && carrier())
- hangup(); // make sure nobody sneaks in
- }
- already_connected = 0;
- if (exit_requested)
- {
- if (!carrier() && !direct_connect)
- cputs_tr(_mdm_init_str);
- _scr_chk_key = old_scr_chk_key;
- _cisb_auto = old_cisb_auto;
- _zmod_auto = old_zmod_auto;
- _sound_on = old_sound;
- _down_dir = old_down_dir;
- _up_dir = old_up_dir;
- prints("^M^JHost mode script finished.");
- usagelog("*CLOSE*");
- return 1;
- }
- }
- }
-
- //////////////////////////////////////////////////////////////////////////////
-
- do_one_caller()
-
- {
- str strn[80],
- fname[64];
- int option,
- status,
- c, i, i2;
-
- access_level = 1;
-
- if (already_connected)
- prints("Already Connected!");
- else if (carrier_counts)
- {
- if (!determine_baud())
- ; // do something else here if this is a problem
- }
-
- delay(10);
- type_file("LOGO.MSG");
-
- flushbuf();
- while (1)
- {
- host_send("Please enter your full name: ");
- host_input_strn(current_caller, 30);
- host_send("^M^J");
-
- if (finished_caller)
- return;
-
- if (strlen(current_caller) >= 5)
- break;
- }
-
- access_level = ask_for_pass(3, pass1, pass2);
-
- if (access_level)
- ustamp("Logon by ", 1, 0);
- else
- ustamp("Failed logon attempt by ", 1, 0);
- ustamp(current_caller, 0, 1);
-
- if (!access_level)
- {
- host_send("Goodbye!^M^J");
- if (carrier_counts)
- {
- delay(10);
- hangup();
- }
- return;
- }
-
- type_file("WELCOME.MSG");
-
- while (1)
- {
- if (finished_caller)
- return;
-
- host_send("^M^J[F]iles [T]ype [U]pload [D]ownload [G]oodbye [?]^]");
- host_input_strn(strn, 1);
- option = toupper(subchr(strn, 0));
- host_send("^M^J");
-
- if (option == 'F') // Files directory
- {
- if (access_level == 2)
- {
- host_send("Enter 'filespec' or press Return for *.*,^M^J: ");
- host_input_strn(fname, 64);
- host_send("^M^J");
-
- if (just_filename(fname))
- {
- strn = host_downloads;
- strcat(strn, fname);
- }
- else
- strn = fname;
- }
- else
- {
- strn = host_downloads;
- strcat(strn, "*.*");
- }
-
- if (local_mode)
- show_directory(strn, 0, carrier_counts);
- else
- show_directory(strn, 1, carrier_counts);
- host_send("^M^J");
- }
- else if (option == 'T') // Type a file
- {
- host_send("Type what file? ");
- host_input_strn(strn, 64);
- host_send("^M^J");
- if (access_level != 2) // if access 1, name and ext only
- fnstrip(strn, 3, fname);
- else
- fname = strn;
-
- if (just_filename(fname))
- {
- strn = host_downloads;
- strcat(strn, fname);
- fname = strn;
- }
-
- if (!filefind(fname, 0, strn))
- {
- host_send("Unable to find ");
- host_send(fname);
- continue;
- }
-
- type_file(fname);
- }
- else if (option == 'G') // Goodbye (Hang-up)
- {
- host_send("^M^JGoodbye!^M^J");
- Exittelix (0,1);
- ustamp("User logged off.", 1, 1);
- if (carrier_counts)
- {
- delay(10);
- hangup();
- }
- return;
- }
- else if (option == 'U') // User upload
- {
- option = host_get_prot();
- if (!option)
- continue;
-
- status = 1;
- if (option == 'T' || option == 'M' || option == 'S' ||
- option == 'Y' || option == 'Z' || option == 'E')
- {
- send_transfer_msg();
- status = receive(option, "");
- }
- else
- {
- host_send("Upload what file? ");
- host_input_strn(strn, 48);
- host_send("^M^J");
- if (!strn)
- continue;
- if (access_level != 2) // if access 1, name and ext only
- fnstrip(strn, 3, fname);
- else
- fname = strn;
-
- if (just_filename(fname))
- {
- strn = host_uploads;
- strcat(strn, fname);
- fname = strn;
- }
-
- if (filefind(fname, 23, strn))
- host_send("File already exists!^M^J");
- else
- {
- send_transfer_msg();
- status = receive(option, fname);
- }
- }
- if (status == -2) // Carrier lost
- connection_lost = finished_caller = 1;
- else if (status == -1)
- host_send("^GOne or more files not received!^M^J");
- }
- else if (option == 'D') // User download
- {
- option = host_get_prot();
- if (!option)
- continue;
- host_send("Download what file(s)? ");
- host_input_strn(strn, 48);
- host_send("^M^J");
- if (!strn)
- continue;
- if (access_level != 2) // if not level 2, keep only name & ext
- fnstrip(strn, 3, fname);
- else
- fname = strn;
-
- if (just_filename(fname))
- {
- strn = host_downloads;
- strcat(strn, fname);
- fname = strn;
- }
-
- if (!filefind(fname, 0, strn))
- {
- host_send("Unable to find any matching file(s)!^M^J");
- continue;
- }
-
- status = 1;
- send_transfer_msg();
- status = send(option, fname);
- if (status == -2) // Carrier lost
- connection_lost = finished_caller = 1;
- else if (status == -1)
- host_send("^GOne or more files not received!^M^J");
- }
- else if (option == '~') // Remote shell
- {
- if (get_port() != 1 && get_port() != 2)
- {
- host_send("Remote Shell not supported on this comm port due to DOS limits!^M^J");
- continue;
- }
-
- if (ask_for_pass(3, shellpass, shellpass) != 0)
- {
- host_send("Type EXIT and then press Return to come back.^M^J");
- if (get_baud() == 300)
- delay(10);
-
- strn = "COM";
- setchr(strn, 3, get_port() + '0'); // get right device name for redirect
-
- if (!local_mode)
- if (redirect_dos(strn) == -1) // redirect DOS input and output
- continue;
-
- dos("", 0); // actually call the shell
-
- if (!local_mode)
- redirect_dos(""); // very important to put things back to norm
- }
- }
- else if (option == '^Z') // Shut down Host Mode
- {
- host_send("Shut down Host mode. ");
- if (!ask_for_pass(3, shutpass, shutpass))
- continue;
- host_send("Goodbye!^M^J");
- if (carrier_counts)
- hangup();
- ustamp("User shut down Host Mode.", 1, 1);
- finished_caller = 1;
- exit_requested = 1;
- }
- }
- }
-
- //////////////////////////////////////////////////////////////////////////////
-
- host_get_prot()
-
- {
- str prot[1];
-
- host_send("^M^JModem7 SEAlink Xmodem 1k-Xmodem G-1k-Xmodem Ymodem YmodEm-g Zmodem^M^J");
- host_send("Which protocol? ");
- host_input_strn(prot, 1);
- host_send("^M^J");
-
- if (strposi("MSX1GYEZ", prot, 0) == -1) // if illegal prot
- prot = ""; // return 0
-
- return (toupper(subchr(prot, 0)));
-
- }
-
- //////////////////////////////////////////////////////////////////////////////
-
- send_transfer_msg()
-
- {
- host_send("Ready to transfer file(s)... Press Ctrl-X at least twice to abort^M^J");
- }
-
- //////////////////////////////////////////////////////////////////////////////
- // Determine the baud rate once a Carrier Detect Signal has been detected
- // Since no characters were read, the 'CONNECT' string should still be
- // in the receive buffer.
-
- determine_baud()
-
- {
- int t3, t12, t24, t96, t192;
- int tmark, stat;
- int new_baud = 0;
-
- printsc("Determining baud... ");
-
- track_free(0); // clear all existing tracks
-
- t3 = track(conn300, 0); // check for connect strings
- t12 = track(conn1200, 0);
- t24 = track(conn2400, 0);
- t96 = track(conn9600, 0);
- t192 = track(conn19200, 0);
-
- tmark = timer_start(30); // wait up to 3 seconds for string
-
- while (!time_up(tmark))
- {
- if (!carrier())
- {
- track_free(0); // clear all existing tracks
- return 0;
- }
-
- if (cinp_cnt())
- track_addchr(cgetc());
-
- stat = track_hit(0);
- if (stat == 0)
- continue;
-
- if (stat == t3)
- new_baud = 300;
- else if (stat == t24)
- new_baud = 2400;
- else if (stat == t96)
- new_baud = 9600;
- else if (stat == t192)
- new_baud = 19200;
- else
- new_baud = 1200;
-
- break; // have baud rate, get out
- }
-
- if (!new_baud) // time-up without CONNECT string
- {
- prints("Failed!");
- track_free(0); // clear all existing tracks
- return 0;
- }
-
- printn(new_baud);
- prints("");
- set_cparams(new_baud, get_parity(), get_datab(), get_stopb());
-
- track_free(0); // clear all existing tracks
- return 1; // indicate success
-
- }
-
- //////////////////////////////////////////////////////////////////////////////
-
- type_file(str fname)
-
- {
- int f;
- str buf[100];
- int ichar, lines_sent = 0;
-
- f = fopen(fname, "r");
- if (!f)
- return -1;
-
- host_send("^M^J");
-
- while (1)
- {
- if (carrier_counts)
- if (!carrier())
- {
- connection_lost = 1;
- finished_caller = 1;
- fclose(f);
- return 0;
- }
-
- if (fgets(buf, 80, f) == -1)
- {
- fclose(f);
- return 1;
- }
-
- host_send(buf);
- host_send("^M^J");
- ++lines_sent;
-
- if (lines_sent >= 22)
- {
- lines_sent = 0;
- host_send("[More]");
- host_input();
-
- if (finished_caller) // if user inactivity
- {
- fclose(f);
- return 0;
- }
-
- host_send("^H ^H^H ^H^H ^H^H ^H^H ^H^H ^H^H ^H");
- }
-
- while (cinp_cnt())
- {
- ichar = cgetc();
- if (ichar == '^C' || ichar == '^K')
- {
- host_send("^M^J");
- fclose(f);
- return 1;
- }
- }
- }
- }
-
- //////////////////////////////////////////////////////////////////////////////
-
- host_send(str outstr)
-
- {
-
- printsc(outstr);
- if (!local_mode)
- cputs(outstr);
-
- }
-
- //////////////////////////////////////////////////////////////////////////////
-
- host_send_c(int chr)
-
- {
-
- printc(chr);
- if (!local_mode)
- cputc(chr);
-
- }
-
- //////////////////////////////////////////////////////////////////////////////
-
- host_input_strn(str buf, int maximum)
-
- {
- int i = 0, key;
-
- while (1)
- {
- key = host_input();
- if (!key) // timeout or user disconnect
- {
- setchr(buf, 0, 0); // set string to empty
- return 0; // indicate there is a problem
- }
-
- if (key == '^M')
- break;
- if (key == 127 || key == 8)
- {
- if (i)
- {
- --i;
- host_send_c(key);
- }
- continue;
- }
- if (i < maximum)
- {
- setchr(buf, i, key);
- i = i + 1;
- }
- else
- i = i + 1;
- }
-
- if (i > maximum)
- i = maximum;
-
- setchr(buf, i, '^0');
-
- if (subchr(buf, 0))
- return 1;
- else
- return 0;
-
- }
-
- //////////////////////////////////////////////////////////////////////////////
-
- host_input()
-
- {
- int c;
- int t;
-
- t = timer_start(2400); // 4 minutes inactivity allowed
-
- while (1)
- {
- if (time_up(t) && !direct_connect)
- {
- host_send("^M^J^M^JInactivity period too long. Connection terminated!^M^J");
- if (carrier_counts)
- hangup();
- finished_caller = 1;
- kill_user = 1;
- return 0;
- }
-
- if (carrier_counts)
- if (!carrier())
- {
- prints("^M^JConnection has been lost, call terminated.^M^J");
- connection_lost = 1;
- finished_caller = 1;
- return 0;
- }
-
- if ((c = inkey()) != 0)
- {
- if (c == 27) // ESC key, sysop wants to exit
- {
- finished_caller = 1;
- exit_requested = 1;
- return 0;
- }
- else if (c == 0x4f00) // END key, temrinate user
- {
- prints("^M^JUser terminated!");
- ustamp("User terminated!", 1, 1);
- if (carrier_counts)
- hangup();
-
- finished_caller = 1;
- kill_user = 1;
- return 0;
- }
-
- else if (c <= 255)
- {
- if (c != 8 && c != 127)
- host_send_c(c);
- return c;
- }
- }
-
- if (!local_mode)
- if (cinp_cnt())
- {
- c = cgetc();
- if (c != 8 && c != 127)
- host_send_c(c);
- return c;
- }
- }
- }
-
- //////////////////////////////////////////////////////////////////////////////
-
- ask_for_pass(int maxtries, str pass1, str pass2)
-
- {
- int i;
- str strn[8];
-
- for (i = 0; i < maxtries; ++i)
- {
- if (i)
- host_send("Wrong! Try again.^M^J");
- host_send("Password: ");
- host_input_strn(strn, 8);
- host_send("^M^J");
-
- if (finished_caller)
- return 0;
-
- if (!strcmpi(strn, pass1))
- return 1;
-
- if (!strcmpi(strn, pass2))
- return 2;
- }
-
- host_send("No more chances. Access denied.^M^J");
-
- return 0;
-
- }
-
- //////////////////////////////////////////////////////////////////////////////
-
- read_host_config_file()
-
- {
- str s[80];
- int f, stat;
-
- s = _telix_dir;
- strcat(s, "HOST.CNF");
-
- f = fopen(s, "r");
- if (!f)
- {
- printsc("Can't open ");
- prints(s);
- return -1;
- }
-
- stat = fgets(s, 80, f);
- if (stat == -1)
- goto got_error;
- pass1 = s;
-
- stat = fgets(s, 80, f);
- if (stat == -1)
- goto got_error;
- pass2 = s;
-
- stat = fgets(s, 80, f);
- if (stat == -1)
- goto got_error;
- shellpass = s;
-
- stat = fgets(s, 80, f);
- if (stat == -1)
- goto got_error;
- shutpass = s;
-
- stat = fgets(s, 80, f);
- if (stat == -1)
- goto got_error;
- host_downloads = s;
-
- stat = fgets(s, 80, f);
- if (stat == -1)
- goto got_error;
- host_uploads = s;
-
- stat = fgets(s, 80, f);
- if (stat == -1)
- goto got_error;
- direct_connect = (toupper(subchr(s, 0)) == 'D');
-
- fclose(f);
- return 1;
-
- // jump here if error
-
- got_error:
- fclose(f);
- return -1;
-
- }
-
- //////////////////////////////////////////////////////////////////////////////
-
- check_directories()
-
- {
- str s[80];
- int i, a;
-
- // first remove trailing slashes
-
- s = host_uploads;
- i = strlen(s);
- if (i > 0)
- if (subchr(s, i - 1) == '\' || subchr(s, i - 1) == '/')
- setchr(s, i - 1, 0);
- if (s && !(strlen(s) == 2 && subchr(s, 1) == ':'))
- {
- a = fileattr(s);
- if (a == -1 || !(a & 16))
- return 0; // not a directory or doesn't exist
- }
-
- s = host_downloads;
- i = strlen(s);
- if (i > 0)
- if (subchr(s, i - 1) == '\' || subchr(s, i - 1) == '/')
- setchr(s, i - 1, 0);
- if (s && !(strlen(s) == 2 && subchr(s, 1) == ':'))
- {
- a = fileattr(s);
- if (a == -1 || !(a & 16))
- return 0; // not a directory or doesn't exist
- }
-
- return 1;
-
- }
-
- //////////////////////////////////////////////////////////////////////////////
- // returns TRUE if passed filespec is just a filename. Also handles the
- // forward slash as a path separator.
-
- just_filename(str filespec)
-
- {
- int slash, space;
-
- if (strpos(filespec, ":", 0) != -1)
- return 0;
- if (strpos(filespec, "\", 0) != -1)
- return 0;
- if ((slash = strpos(filespec, "/")) == -1)
- return 1;
-
- space = strpos(filespec, " ");
- if (space == -1)
- return 0;
- if (space < slash)
- return 1;
-
- return 0;
-
- }
-
- //////////////////////////////////////////////////////////////////////////////
-