citadel/commands.c

   1 /*
   2  * $Id$
   3  *
   4  * This file contains functions which implement parts of the
   5  * text-mode user interface.
   6  *
   7  */
   8
   9 #include "sysdep.h"
  10 #include <stdlib.h>
  11 #include <unistd.h>
  12 #include <stdio.h>
  13 #include <fcntl.h>
  14 #include <ctype.h>
  15 #include <string.h>
  16 #include <sys/types.h>
  17
  18 #if TIME_WITH_SYS_TIME
  19 # include <sys/time.h>
  20 # include <time.h>
  21 #else
  22 # if HAVE_SYS_TIME_H
  23 #  include <sys/time.h>
  24 # else
  25 #  include <time.h>
  26 # endif
  27 #endif
  28
  29 #ifdef HAVE_TERMIOS_H
  30 #include <termios.h>
  31 #else
  32 #include <sgtty.h>
  33 #endif
  34
  35 #ifdef HAVE_SYS_SELECT_H
  36 #include <sys/select.h>
  37 #endif
  38
  39 #ifdef THREADED_CLIENT
  40 #include <pthread.h>
  41 #endif
  42
  43 #include <signal.h>
  44 #include <errno.h>
  45 #include <stdarg.h>
  46 #include "citadel.h"
  47 #include "commands.h"
  48 #include "messages.h"
  49 #include "citadel_decls.h"
  50 #include "routines.h"
  51 #include "routines2.h"
  52 #include "tools.h"
  53 #include "rooms.h"
  54 #include "client_chat.h"
  55 #ifndef HAVE_SNPRINTF
  56 #include "snprintf.h"
  57 #endif
  58 #include "screen.h"
  59
  60 struct citcmd {
  61         struct citcmd *next;
  62         int c_cmdnum;
  63         int c_axlevel;
  64         char c_keys[5][64];
  65 };
  66
  67 #define IFNEXPERT if ((userflags&US_EXPERT)==0)
  68
  69
  70 int rc_exp_beep;
  71 char rc_exp_cmd[1024];
  72 int rc_allow_attachments;
  73 int rc_display_message_numbers;
  74 int rc_force_mail_prompts;
  75 int rc_remember_passwords;
  76 int rc_ansi_color;
  77 int num_urls = 0;
  78 int rc_prompt_control = 0;
  79 char urls[MAXURLS][SIZ];
  80 char rc_url_cmd[SIZ];
  81
  82 char *gl_string;
  83 int next_lazy_cmd = 5;
  84
  85 int lines_printed = 0;          /* line count for paginator */
  86 extern int screenwidth, screenheight;
  87 extern int termn8;
  88
  89 struct citcmd *cmdlist = NULL;
  90
  91
  92 /* these variables are local to this module */
  93 char keepalives_enabled = KA_YES;       /* send NOOPs to server when idle */
  94 int ok_to_interrupt = 0;                /* print express msgs asynchronously */
  95 time_t AnsiDetect;                      /* when did we send the detect code? */
  96 int enable_color = 0;                   /* nonzero for ANSI color */
  97
  98
  99
 100
 101 /*
 102  * If an interesting key has been pressed, return its value, otherwise 0
 103  */
 104 char was_a_key_pressed(void) {
 105         fd_set rfds;
 106         struct timeval tv;
 107         int the_character;
 108         int retval;
 109
 110         FD_ZERO(&rfds);
 111         FD_SET(0, &rfds);
 112         tv.tv_sec = 0;
 113         tv.tv_usec = 0;
 114         retval = select(1, &rfds, NULL, NULL, &tv);
 115
 116         /* Careful!  Disable keepalives during keyboard polling; we're probably
 117          * in the middle of a data transfer from the server, in which case
 118          * sending a NOOP would throw the client protocol out of sync.
 119          */
 120         if (FD_ISSET(0, &rfds)) {
 121                 set_keepalives(KA_NO);
 122                 the_character = inkey();
 123                 set_keepalives(KA_YES);
 124         }
 125         else {
 126                 the_character = 0;
 127         }
 128         return(the_character);
 129 }
 130
 131
 132
 133
 134
 135 /*
 136  * Check to see if we need to pause at the end of a screen.
 137  * If we do, we have to disable server keepalives during the pause because
 138  * we are probably in the middle of a server operation and the NOOP command
 139  * would confuse everything.
 140  */
 141 int checkpagin(int lp, int pagin, int height)
 142 {
 143         int thekey;
 144
 145         if (sigcaught) return(lp);
 146         thekey = was_a_key_pressed();
 147         if (thekey == 'q' || thekey == 'Q' || thekey == 's' || thekey == 'S')
 148                 thekey = STOP_KEY;
 149         if (thekey == 'n' || thekey == 'N')
 150                 thekey = NEXT_KEY;
 151         if ( (thekey == NEXT_KEY) || (thekey == STOP_KEY)) sigcaught = thekey;
 152         if (sigcaught) return(lp);
 153
 154         if (!pagin) return(0);
 155         if (lp>=(height-1)) {
 156                 set_keepalives(KA_NO);
 157                 hit_any_key();
 158                 set_keepalives(KA_YES);
 159                 return(0);
 160         }
 161         return(lp);
 162 }
 163
 164
 165
 166
 167 /*
 168  * pprintf()  ...   paginated version of printf()
 169  */
 170 void pprintf(const char *format, ...) {
 171         va_list arg_ptr;
 172         static char buf[4096];  /* static for performance, change if needed */
 173         int i;
 174
 175         /* If sigcaught is nonzero, a keypress has interrupted this and we
 176          * should just drain output.
 177          */
 178         if (sigcaught) return;
 179
 180         /* Otherwise, start spewing... */
 181         va_start(arg_ptr, format);
 182         vsprintf(buf, format, arg_ptr);
 183         va_end(arg_ptr);
 184
 185         for (i=0; i<strlen(buf); ++i) {
 186                 scr_putc(buf[i]);
 187                 if (buf[i]==10) {
 188                         ++lines_printed;
 189                         lines_printed = checkpagin(lines_printed,
 190                                 (userflags & US_PAGINATOR),
 191                                 screenheight);
 192                 }
 193         }
 194 }
 195
 196
 197
 198 /*
 199  * print_express()  -  print express messages if there are any
 200  */
 201 void print_express(void)
 202 {
 203         char buf[1024];
 204         FILE *outpipe;
 205         time_t timestamp;
 206         struct tm *stamp;
 207         int flags = 0;
 208         char sender[64];
 209         char node[64];
 210
 211         if (express_msgs == 0)
 212                 return;
 213
 214         if (rc_exp_beep) {
 215                 scr_putc(7);
 216         }
 217         if (strlen(rc_exp_cmd) == 0) {
 218                 color(BRIGHT_RED);
 219                 scr_printf("\r---");
 220         }
 221
 222         while (express_msgs != 0) {
 223                 serv_puts("GEXP");
 224                 serv_gets(buf);
 225                 if (buf[0] != '1')
 226                         return;
 227
 228                 express_msgs = extract_int(&buf[4], 0);
 229                 timestamp = extract_long(&buf[4], 1);
 230                 flags = extract_int(&buf[4], 2);
 231                 extract(sender, &buf[4], 3);
 232                 extract(node, &buf[4], 4);
 233                 strcpy(last_paged, sender);
 234
 235                 stamp = localtime(&timestamp);
 236
 237                 /* If the page is a Logoff Request, honor it. */
 238                 if (flags & 2) {
 239                         termn8 = 1;
 240                         return;
 241                 }
 242
 243                 if (strlen(rc_exp_cmd) > 0) {
 244                         outpipe = popen(rc_exp_cmd, "w");
 245                         if (outpipe != NULL) {
 246                                 /* Header derived from flags */
 247                                 if (flags & 2)
 248                                         fprintf(outpipe,
 249                                                "Please log off now, as requested ");
 250                                 else if (flags & 1)
 251                                         fprintf(outpipe, "Broadcast message ");
 252                                 else if (flags & 4)
 253                                         fprintf(outpipe, "Chat request ");
 254                                 else
 255                                         fprintf(outpipe, "Message ");
 256                                 /* Timestamp.  Can this be improved? */
 257                                 if (stamp->tm_hour == 0 || stamp->tm_hour == 12)
 258                                         fprintf(outpipe, "at 12:%02d%cm",
 259                                                 stamp->tm_min,
 260                                                 stamp->tm_hour ? 'p' : 'a');
 261                                 else if (stamp->tm_hour > 12)           /* pm */
 262                                         fprintf(outpipe, "at %d:%02dpm",
 263                                                 stamp->tm_hour - 12,
 264                                                 stamp->tm_min);
 265                                 else                                    /* am */
 266                                         fprintf(outpipe, "at %d:%02dam",
 267                                                 stamp->tm_hour, stamp->tm_min);
 268                                 fprintf(outpipe, " from %s", sender);
 269                                 if (strncmp(serv_info.serv_nodename, node, 32))
 270                                         fprintf(outpipe, " @%s", node);
 271                                 fprintf(outpipe, ":\n");
 272                                 while (serv_gets(buf), strcmp(buf, "000")) {
 273                                         fprintf(outpipe, "%s\n", buf);
 274                                 }
 275                                 pclose(outpipe);
 276                                 if (express_msgs == 0)
 277                                         return;
 278                                 continue;
 279                         }
 280                 }
 281                 /* fall back to built-in express message display */
 282                 scr_printf("\n");
 283                 lines_printed++;
 284
 285                 /* Header derived from flags */
 286                 if (flags & 2)
 287                         scr_printf("Please log off now, as requested ");
 288                 else if (flags & 1)
 289                         scr_printf("Broadcast message ");
 290                 else if (flags & 4)
 291                         scr_printf("Chat request ");
 292                 else
 293                         scr_printf("Message ");
 294
 295                 /* Timestamp.  Can this be improved? */
 296                 if (stamp->tm_hour == 0 || stamp->tm_hour == 12)/* 12am/12pm */
 297                         scr_printf("at 12:%02d%cm", stamp->tm_min,
 298                                 stamp->tm_hour ? 'p' : 'a');
 299                 else if (stamp->tm_hour > 12)                   /* pm */
 300                         scr_printf("at %d:%02dpm",
 301                                 stamp->tm_hour - 12, stamp->tm_min);
 302                 else                                            /* am */
 303                         scr_printf("at %d:%02dam", stamp->tm_hour, stamp->tm_min);
 304
 305                 /* Sender */
 306                 scr_printf(" from %s", sender);
 307
 308                 /* Remote node, if any */
 309                 if (strncmp(serv_info.serv_nodename, node, 32))
 310                         scr_printf(" @%s", node);
 311
 312                 scr_printf(":\n");
 313                 lines_printed++;
 314                 fmout(screenwidth, NULL, NULL, 1, screenheight, -1, 0);
 315         }
 316         scr_printf("\n---\n");
 317         color(BRIGHT_WHITE);
 318
 319
 320 }
 321
 322
 323 void set_keepalives(int s)
 324 {
 325         keepalives_enabled = (char) s;
 326 }
 327
 328 /*
 329  * This loop handles the "keepalive" messages sent to the server when idling.
 330  */
 331
 332 static time_t idlet = 0;
 333 static void really_do_keepalive(void) {
 334         char buf[1024];
 335
 336         time(&idlet);
 337         if (keepalives_enabled == KA_YES) {
 338                 serv_puts("NOOP");
 339                 serv_gets(buf);
 340                 if (buf[3] == '*') {
 341                         express_msgs = 1;
 342                         if (ok_to_interrupt == 1) {
 343                                 scr_printf("\r%64s\r", "");
 344                                 print_express();
 345                                 scr_printf("%s%c ", room_name,
 346                                        room_prompt(room_flags));
 347                                 scr_flush();
 348                         }
 349                 }
 350         }
 351 }
 352
 353 /* threaded nonblocking keepalive stuff starts here. I'm going for a simple
 354    encapsulated interface; in theory there should be no need to touch these
 355    globals outside of the async_ka_* functions. */
 356
 357 #ifdef THREADED_CLIENT
 358 static pthread_t ka_thr_handle;
 359 static int ka_thr_active = 0;
 360 static int async_ka_enabled = 0;
 361
 362 static void *ka_thread(void *arg)
 363 {
 364         really_do_keepalive();
 365         pthread_detach(ka_thr_handle);
 366         ka_thr_active = 0;
 367         return NULL;
 368 }
 369
 370 /* start up a thread to handle a keepalive in the background */
 371 static void async_ka_exec(void)
 372 {
 373         if (!ka_thr_active) {
 374                 ka_thr_active = 1;
 375                 if (pthread_create(&ka_thr_handle, NULL, ka_thread, NULL)) {
 376                         perror("pthread_create");
 377                         exit(1);
 378                 }
 379         }
 380 }
 381 #endif /* THREADED_CLIENT */
 382
 383 /* I changed this from static to not because I need to call it from
 384    screen.c, either that or make something in screen.c not static.
 385    Fix it how you like. Why all the staticness? stu */
 386
 387 void do_keepalive(void)
 388 {
 389         time_t now;
 390
 391         time(&now);
 392         if ((now - idlet) < ((long) S_KEEPALIVE))
 393                 return;
 394
 395         /* Do a space-backspace to keep telnet sessions from idling out */
 396         scr_printf(" %c", 8);
 397         scr_flush();
 398
 399 #ifdef THREADED_CLIENT
 400         if (async_ka_enabled)
 401                 async_ka_exec();
 402         else
 403 #endif
 404                 really_do_keepalive();
 405 }
 406
 407
 408 /* Now the actual async-keepalve API that we expose to higher levels:
 409    async_ka_start() and async_ka_end(). These do nothing when we don't have
 410    threading enabled, so we avoid sprinkling ifdef's throughout the code. */
 411
 412 /* wait for a background keepalive to complete. this must be done before
 413    attempting any further server requests! */
 414 void async_ka_end(void)
 415 {
 416 #ifdef THREADED_CLIENT
 417         if (ka_thr_active)
 418                 pthread_join(ka_thr_handle, NULL);
 419
 420         async_ka_enabled--;
 421 #endif
 422 }
 423
 424 /* tell do_keepalive() that keepalives are asynchronous. */
 425 void async_ka_start(void)
 426 {
 427 #ifdef THREADED_CLIENT
 428         async_ka_enabled++;
 429 #endif
 430 }
 431
 432
 433 int inkey(void)
 434 {                               /* get a character from the keyboard, with   */
 435         int a;                  /* the watchdog timer in effect if necessary */
 436 #ifndef HAVE_CURSES_H /* avoid compiler warning */
 437         fd_set rfds;
 438         struct timeval tv;
 439 #endif
 440         time_t start_time;
 441
 442         scr_flush();
 443         lines_printed = 0;
 444         time(&start_time);
 445
 446         do {
 447 #ifdef HAVE_CURSES_H /* IO, maybe you wanna move this to screen.c */
 448         a = scr_blockread();
 449 #else
 450                 /* This loop waits for keyboard input.  If the keepalive
 451                  * timer expires, it sends a keepalive to the server if
 452                  * necessary and then waits again.
 453                  */
 454                 do {
 455                         do_keepalive();
 456
 457                         FD_ZERO(&rfds);
 458                         FD_SET(0, &rfds);
 459                         tv.tv_sec = S_KEEPALIVE;
 460                         tv.tv_usec = 0;
 461
 462                         select(1, &rfds, NULL, NULL, &tv);
 463                 } while (!FD_ISSET(0, &rfds));
 464
 465                 /* At this point, there's input, so fetch it.
 466                  * (There's a hole in the bucket...)
 467                  */
 468                 a = scr_getc();
 469 #endif
 470
 471
 472                 if (a == 127)
 473                         a = 8;
 474                 if (a > 126)
 475                         a = 0;
 476                 if (a == 13)
 477                         a = 10;
 478                 if (((a != 4) && (a != 10) && (a != 8) && (a != NEXT_KEY) && (a != STOP_KEY))
 479                     && ((a < 32) || (a > 126)))
 480                         a = 0;
 481         } while (a == 0);
 482         return (a);
 483 }
 484
 485
 486 int yesno(void)
 487 {                               /* Returns 1 for yes, 0 for no */
 488         int a;
 489         while (1) {
 490                 a = inkey();
 491                 a = tolower(a);
 492                 if (a == 'y') {
 493                         scr_printf("Yes\n");
 494                         return (1);
 495                 }
 496                 if (a == 'n') {
 497                         scr_printf("No\n");
 498                         return (0);
 499                 }
 500         }
 501 }
 502
 503 /* Returns 1 for yes, 0 for no, arg is default value */
 504 int yesno_d(int d)
 505 {
 506         int a;
 507         while (1) {
 508                 a = inkey();
 509                 a = tolower(a);
 510                 if (a == 10)
 511                         a = (d ? 'y' : 'n');
 512                 if (a == 'y') {
 513                         scr_printf("Yes\n");
 514                         return (1);
 515                 }
 516                 if (a == 'n') {
 517                         scr_printf("No\n");
 518                         return (0);
 519                 }
 520         }
 521 }
 522
 523
 524
 525
 526 /* Gets a line from the terminal */
 527 /* string == Pointer to string buffer */
 528 /* lim == Maximum length - if negative, no-show */
 529 void getline(char *string, int lim)
 530 {
 531         int a, b;
 532         char flag = 0;
 533
 534         if (lim < 0) {
 535                 lim = (0 - lim);
 536                 flag = 1;
 537         }
 538         strcpy(string, "");
 539         gl_string = string;
 540         async_ka_start();
 541       GLA:a = inkey();
 542         a = (a & 127);
 543         if ((a == 8) && (strlen(string) == 0))
 544                 goto GLA;
 545         if ((a != 10) && (a != 8) && (strlen(string) == lim))
 546                 goto GLA;
 547         if ((a == 8) && (string[0] != 0)) {
 548                 string[strlen(string) - 1] = 0;
 549                 scr_putc(8);
 550                 scr_putc(32);
 551                 scr_putc(8);
 552                 goto GLA;
 553         }
 554         if ((a == 10)) {
 555                 scr_putc(10);
 556                 async_ka_end();
 557                 return;
 558         }
 559         if (a < 32)
 560                 a = '.';
 561         b = strlen(string);
 562         string[b] = a;
 563         string[b + 1] = 0;
 564         if (flag == 0)
 565                 scr_putc(a);
 566         if (flag == 1)
 567                 scr_putc('*');
 568         goto GLA;
 569 }
 570
 571
 572 /*
 573  * strprompt()  -  prompt for a string, print the existing value and
 574  *                 allow the user to press return to keep it...
 575  */
 576 void strprompt(char *prompt, char *str, int len)
 577 {
 578         char buf[128];
 579         print_express();
 580         color(DIM_WHITE);
 581         scr_printf("%s ", prompt);
 582         color(DIM_MAGENTA);
 583         scr_printf("[");
 584         color(BRIGHT_MAGENTA);
 585         scr_printf("%s", str);
 586         color(DIM_MAGENTA);
 587         scr_printf("]");
 588         color(DIM_WHITE);
 589         scr_printf(": ");
 590         color(BRIGHT_CYAN);
 591         getline(buf, len);
 592         if (buf[0] != 0)
 593                 strcpy(str, buf);
 594         color(DIM_WHITE);
 595 }
 596
 597 /*
 598  * boolprompt()  -  prompt for a yes/no, print the existing value and
 599  *                  allow the user to press return to keep it...
 600  */
 601 int boolprompt(char *prompt, int prev_val)
 602 {
 603         int r;
 604
 605         color(DIM_WHITE);
 606         scr_printf("%s ", prompt);
 607         color(DIM_MAGENTA);
 608         scr_printf(" [");
 609         color(BRIGHT_MAGENTA);
 610         scr_printf("%s", (prev_val ? "Yes" : "No"));
 611         color(DIM_MAGENTA);
 612         scr_printf("]: ");
 613         color(BRIGHT_CYAN);
 614         r = (yesno_d(prev_val));
 615         color(DIM_WHITE);
 616         return r;
 617 }
 618
 619 /*
 620  * intprompt()  -  like strprompt(), except for an integer
 621  *                 (note that it RETURNS the new value!)
 622  */
 623 int intprompt(char *prompt, int ival, int imin, int imax)
 624 {
 625         char buf[16];
 626         int i;
 627         int p;
 628
 629         do {
 630                 i = ival;
 631                 snprintf(buf, sizeof buf, "%d", i);
 632                 strprompt(prompt, buf, 15);
 633                 i = atoi(buf);
 634                 for (p=0; p<strlen(buf); ++p) {
 635                         if ( (!isdigit(buf[p]))
 636                            && ( (buf[p]!='-') || (p!=0) )  )
 637                                 i = imin - 1;
 638                 }
 639                 if (i < imin)
 640                         scr_printf("*** Must be no less than %d.\n", imin);
 641                 if (i > imax)
 642                         scr_printf("*** Must be no more than %d.\n", imax);
 643         } while ((i < imin) || (i > imax));
 644         return (i);
 645 }
 646
 647 /*
 648  * newprompt()  -  prompt for a string with no existing value
 649  *                 (clears out string buffer first)
 650  */
 651 void newprompt(char *prompt, char *str, int len)
 652 {
 653         color(BRIGHT_MAGENTA);
 654         scr_printf("%s", prompt);
 655         color(DIM_MAGENTA);
 656         getline(str, len);
 657         color(DIM_WHITE);
 658 }
 659
 660
 661 int lkey(void)
 662 {                               /* returns a lower case value */
 663         int a;
 664         a = inkey();
 665         if (isupper(a))
 666                 a = tolower(a);
 667         return (a);
 668 }
 669
 670 /*
 671  * parse the citadel.rc file
 672  */
 673 void load_command_set(void)
 674 {
 675         FILE *ccfile;
 676         char buf[1024];
 677         struct citcmd *cptr;
 678         struct citcmd *lastcmd = NULL;
 679         int a, d;
 680         int b = 0;
 681
 682
 683         /* first, set up some defaults for non-required variables */
 684
 685         strcpy(editor_path, "");
 686         strcpy(printcmd, "");
 687         strcpy(rc_username, "");
 688         strcpy(rc_password, "");
 689         rc_floor_mode = 0;
 690         rc_exp_beep = 1;
 691         rc_allow_attachments = 0;
 692         rc_remember_passwords = 0;
 693         strcpy(rc_exp_cmd, "");
 694         rc_display_message_numbers = 0;
 695         rc_force_mail_prompts = 0;
 696         rc_ansi_color = 0;
 697         strcpy(rc_url_cmd, "");
 698         rc_encrypt = RC_DEFAULT;
 699 #ifdef HAVE_CURSES_H
 700         rc_screen = RC_DEFAULT;
 701 #endif
 702         rc_alt_semantics = 0;
 703
 704         /* now try to open the citadel.rc file */
 705
 706         ccfile = NULL;
 707         if (getenv("HOME") != NULL) {
 708                 snprintf(buf, sizeof buf, "%s/.citadelrc", getenv("HOME"));
 709                 ccfile = fopen(buf, "r");
 710         }
 711         if (ccfile == NULL) {
 712                 snprintf(buf, sizeof buf, "%s/citadel.rc", BBSDIR);
 713                 ccfile = fopen(buf, "r");
 714         }
 715         if (ccfile == NULL) {
 716                 ccfile = fopen("/etc/citadel.rc", "r");
 717         }
 718         if (ccfile == NULL) {
 719                 ccfile = fopen("./citadel.rc", "r");
 720         }
 721         if (ccfile == NULL) {
 722                 perror("commands: cannot open citadel.rc");
 723                 logoff(errno);
 724         }
 725         while (fgets(buf, sizeof buf, ccfile) != NULL) {
 726                 while ((strlen(buf) > 0) ? (isspace(buf[strlen(buf) - 1])) : 0)
 727                         buf[strlen(buf) - 1] = 0;
 728
 729                 if (!strncasecmp(buf, "encrypt=", 8)) {
 730                         if (!strcasecmp(&buf[8], "yes"))
 731                                 rc_encrypt = RC_YES;
 732                         else if (!strcasecmp(&buf[8], "no"))
 733                                 rc_encrypt = RC_NO;
 734                         else if (!strcasecmp(&buf[8], "default"))
 735                                 rc_encrypt = RC_DEFAULT;
 736                 }
 737
 738 #ifdef HAVE_CURSES_H
 739                 if (!strncasecmp(buf, "fullscreen=", 11)) {
 740                         if (!strcasecmp(&buf[11], "yes"))
 741                                 rc_screen = RC_YES;
 742                         else if (!strcasecmp(&buf[11], "no"))
 743                                 rc_screen = RC_NO;
 744                 }
 745 #endif
 746
 747                 if (!strncasecmp(buf, "editor=", 7))
 748                         strcpy(editor_path, &buf[7]);
 749
 750                 if (!strncasecmp(buf, "printcmd=", 9))
 751                         strcpy(printcmd, &buf[9]);
 752
 753                 if (!strncasecmp(buf, "expcmd=", 7))
 754                         strcpy(rc_exp_cmd, &buf[7]);
 755
 756                 if (!strncasecmp(buf, "local_screen_dimensions=", 24))
 757                         have_xterm = (char) atoi(&buf[24]);
 758
 759                 if (!strncasecmp(buf, "use_floors=", 11)) {
 760                         if (!strcasecmp(&buf[11], "yes"))
 761                                 rc_floor_mode = RC_YES;
 762                         if (!strcasecmp(&buf[11], "no"))
 763                                 rc_floor_mode = RC_NO;
 764                         if (!strcasecmp(&buf[11], "default"))
 765                                 rc_floor_mode = RC_DEFAULT;
 766                 }
 767                 if (!strncasecmp(buf, "beep=", 5)) {
 768                         rc_exp_beep = atoi(&buf[5]);
 769                 }
 770                 if (!strncasecmp(buf, "allow_attachments=", 18)) {
 771                         rc_allow_attachments = atoi(&buf[18]);
 772                 }
 773                 if (!strncasecmp(buf, "remember_passwords=", 19)) {
 774                         rc_remember_passwords = atoi(&buf[19]);
 775                 }
 776                 if (!strncasecmp(buf, "display_message_numbers=", 24)) {
 777                         rc_display_message_numbers = atoi(&buf[24]);
 778                 }
 779                 if (!strncasecmp(buf, "force_mail_prompts=", 19)) {
 780                         rc_force_mail_prompts = atoi(&buf[19]);
 781                 }
 782                 if (!strncasecmp(buf, "ansi_color=", 11)) {
 783                         if (!strncasecmp(&buf[11], "on", 2))
 784                                 rc_ansi_color = 1;
 785                         if (!strncasecmp(&buf[11], "auto", 4))
 786                                 rc_ansi_color = 2;      /* autodetect */
 787                         if (!strncasecmp(&buf[11], "user", 4))
 788                                 rc_ansi_color = 3;      /* user config */
 789                 }
 790                 if (!strncasecmp(buf, "prompt_control=", 15)) {
 791                         if (!strncasecmp(&buf[15], "on", 2))
 792                                 rc_prompt_control = 1;
 793                         if (!strncasecmp(&buf[15], "user", 4))
 794                                 rc_prompt_control = 3;  /* user config */
 795                 }
 796                 if (!strncasecmp(buf, "username=", 9))
 797                         strcpy(rc_username, &buf[9]);
 798
 799                 if (!strncasecmp(buf, "password=", 9))
 800                         strcpy(rc_password, &buf[9]);
 801
 802                 if (!strncasecmp(buf, "urlcmd=", 7))
 803                         strcpy(rc_url_cmd, &buf[7]);
 804
 805                 if (!strncasecmp(buf, "alternate_semantics=", 20)) {
 806                         if (!strncasecmp(&buf[11], "yes", 3))
 807                                 rc_alt_semantics = 1;
 808                         if (!strncasecmp(&buf[11], "no", 2))
 809                                 rc_alt_semantics = 0;
 810                 }
 811                 if (!strncasecmp(buf, "cmd=", 4)) {
 812                         strcpy(buf, &buf[4]);
 813
 814                         cptr = (struct citcmd *) malloc(sizeof(struct citcmd));
 815
 816                         cptr->c_cmdnum = atoi(buf);
 817                         for (d = strlen(buf); d >= 0; --d)
 818                                 if (buf[d] == ',')
 819                                         b = d;
 820                         strcpy(buf, &buf[b + 1]);
 821
 822                         cptr->c_axlevel = atoi(buf);
 823                         for (d = strlen(buf); d >= 0; --d)
 824                                 if (buf[d] == ',')
 825                                         b = d;
 826                         strcpy(buf, &buf[b + 1]);
 827
 828                         for (a = 0; a < 5; ++a)
 829                                 cptr->c_keys[a][0] = 0;
 830
 831                         a = 0;
 832                         b = 0;
 833                         buf[strlen(buf) + 1] = 0;
 834                         while (strlen(buf) > 0) {
 835                                 b = strlen(buf);
 836                                 for (d = strlen(buf); d >= 0; --d)
 837                                         if (buf[d] == ',')
 838                                                 b = d;
 839                                 strncpy(cptr->c_keys[a], buf, b);
 840                                 cptr->c_keys[a][b] = 0;
 841                                 if (buf[b] == ',')
 842                                         strcpy(buf, &buf[b + 1]);
 843                                 else
 844                                         strcpy(buf, "");
 845                                 ++a;
 846                         }
 847
 848                         cptr->next = NULL;
 849                         if (cmdlist == NULL)
 850                                 cmdlist = cptr;
 851                         else
 852                                 lastcmd->next = cptr;
 853                         lastcmd = cptr;
 854                 }
 855         }
 856         fclose(ccfile);
 857 }
 858
 859
 860
 861 /*
 862  * return the key associated with a command
 863  */
 864 char keycmd(char *cmdstr)
 865 {
 866         int a;
 867
 868         for (a = 0; a < strlen(cmdstr); ++a)
 869                 if (cmdstr[a] == '&')
 870                         return (tolower(cmdstr[a + 1]));
 871         return (0);
 872 }
 873
 874
 875 /*
 876  * Output the string from a key command without the ampersand
 877  * "mode" should be set to 0 for normal or 1 for <C>ommand key highlighting
 878  */
 879 char *cmd_expand(char *strbuf, int mode)
 880 {
 881         int a;
 882         static char exp[64];
 883         char buf[1024];
 884
 885         strcpy(exp, strbuf);
 886
 887         for (a = 0; a < strlen(exp); ++a) {
 888                 if (strbuf[a] == '&') {
 889
 890                         if (mode == 0) {
 891                                 strcpy(&exp[a], &exp[a + 1]);
 892                         }
 893                         if (mode == 1) {
 894                                 exp[a] = '<';
 895                                 strcpy(buf, &exp[a + 2]);
 896                                 exp[a + 2] = '>';
 897                                 exp[a + 3] = 0;
 898                                 strcat(exp, buf);
 899                         }
 900                 }
 901                 if (!strncmp(&exp[a], "^r", 2)) {
 902                         strcpy(buf, exp);
 903                         strcpy(&exp[a], room_name);
 904                         strcat(exp, &buf[a + 2]);
 905                 }
 906                 if (!strncmp(&exp[a], "^c", 2)) {
 907                         exp[a] = ',';
 908                         strcpy(&exp[a + 1], &exp[a + 2]);
 909                 }
 910         }
 911
 912         return (exp);
 913 }
 914
 915
 916
 917 /*
 918  * Comparison function to determine if entered commands match a
 919  * command loaded from the config file.
 920  */
 921 int cmdmatch(char *cmdbuf, struct citcmd *cptr, int ncomp)
 922 {
 923         int a;
 924         int cmdax;
 925
 926         cmdax = 0;
 927         if (is_room_aide)
 928                 cmdax = 1;
 929         if (axlevel >= 6)
 930                 cmdax = 2;
 931
 932         for (a = 0; a < ncomp; ++a) {
 933                 if ((tolower(cmdbuf[a]) != keycmd(cptr->c_keys[a]))
 934                     || (cptr->c_axlevel > cmdax))
 935                         return (0);
 936         }
 937         return (1);
 938 }
 939
 940
 941 /*
 942  * This function returns 1 if a given command requires a string input
 943  */
 944 int requires_string(struct citcmd *cptr, int ncomp)
 945 {
 946         int a;
 947         char buf[64];
 948
 949         strcpy(buf, cptr->c_keys[ncomp - 1]);
 950         for (a = 0; a < strlen(buf); ++a) {
 951                 if (buf[a] == ':')
 952                         return (1);
 953         }
 954         return (0);
 955 }
 956
 957
 958 /*
 959  * Input a command at the main prompt.
 960  * This function returns an integer command number.  If the command prompts
 961  * for a string then it is placed in the supplied buffer.
 962  */
 963 int getcmd(char *argbuf)
 964 {
 965         char cmdbuf[5];
 966         int cmdspaces[5];
 967         int cmdpos;
 968         int ch;
 969         int a;
 970         int got;
 971         int this_lazy_cmd;
 972         struct citcmd *cptr;
 973
 974         /*
 975          * Starting a new command now, so set sigcaught to 0.  This variable
 976          * is set to nonzero (usually NEXT_KEY or STOP_KEY) if a command has
 977          * been interrupted by a keypress.
 978          */
 979         sigcaught = 0;
 980
 981         /* Switch color support on or off if we're in user mode */
 982         if (rc_ansi_color == 3) {
 983                 if (userflags & US_COLOR)
 984                         enable_color = 1;
 985                 else
 986                         enable_color = 0;
 987         }
 988         /* if we're running in idiot mode, display a cute little menu */
 989         IFNEXPERT formout("mainmenu");
 990
 991         print_express();        /* print express messages if there are any */
 992         strcpy(argbuf, "");
 993         cmdpos = 0;
 994         for (a = 0; a < 5; ++a)
 995                 cmdbuf[a] = 0;
 996         /* now the room prompt... */
 997         ok_to_interrupt = 1;
 998         color(BRIGHT_WHITE);
 999         scr_printf("\n%s", room_name);
1000         color(DIM_WHITE);
1001         scr_printf("%c ", room_prompt(room_flags));
1002         scr_flush();
1003
1004         while (1) {
1005                 ch = inkey();
1006                 ok_to_interrupt = 0;
1007
1008                 /* Handle the backspace key, but only if there's something
1009                  * to backspace over...
1010                  */
1011                 if ((ch == 8) && (cmdpos > 0)) {
1012                         back(cmdspaces[cmdpos - 1] + 1);
1013                         cmdbuf[cmdpos] = 0;
1014                         --cmdpos;
1015                 }
1016                 /* Spacebar invokes "lazy traversal" commands */
1017                 if ((ch == 32) && (cmdpos == 0)) {
1018                         this_lazy_cmd = next_lazy_cmd;
1019                         if (this_lazy_cmd == 13)
1020                                 next_lazy_cmd = 5;
1021                         if (this_lazy_cmd == 5)
1022                                 next_lazy_cmd = 13;
1023                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1024                                 if (cptr->c_cmdnum == this_lazy_cmd) {
1025                                         for (a = 0; a < 5; ++a)
1026                                                 if (cptr->c_keys[a][0] != 0)
1027                                                         scr_printf("%s ", cmd_expand(
1028                                                                                         cptr->c_keys[a], 0));
1029                                         scr_printf("\n");
1030                                         return (this_lazy_cmd);
1031                                 }
1032                         }
1033                         scr_printf("\n");
1034                         return (this_lazy_cmd);
1035                 }
1036                 /* Otherwise, process the command */
1037                 cmdbuf[cmdpos] = tolower(ch);
1038
1039                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1040                         if (cmdmatch(cmdbuf, cptr, cmdpos + 1)) {
1041
1042                                 scr_printf("%s", cmd_expand(cptr->c_keys[cmdpos], 0));
1043                                 cmdspaces[cmdpos] = strlen(
1044                                     cmd_expand(cptr->c_keys[cmdpos], 0));
1045                                 if (cmdpos < 4)
1046                                         if ((cptr->c_keys[cmdpos + 1]) != 0)
1047                                                 scr_putc(' ');
1048                                 ++cmdpos;
1049                         }
1050                 }
1051
1052                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1053                         if (cmdmatch(cmdbuf, cptr, 5)) {
1054                                 /* We've found our command. */
1055                                 if (requires_string(cptr, cmdpos)) {
1056                                         getline(argbuf, 32);
1057                                 } else {
1058                                         scr_printf("\n");
1059                                 }
1060
1061                                 /* If this command is one that changes rooms,
1062                                  * then the next lazy-command (space bar)
1063                                  * should be "read new" instead of "goto"
1064                                  */
1065                                 if ((cptr->c_cmdnum == 5)
1066                                     || (cptr->c_cmdnum == 6)
1067                                     || (cptr->c_cmdnum == 47)
1068                                     || (cptr->c_cmdnum == 52)
1069                                     || (cptr->c_cmdnum == 16)
1070                                     || (cptr->c_cmdnum == 20))
1071                                         next_lazy_cmd = 13;
1072
1073                                 return (cptr->c_cmdnum);
1074
1075                         }
1076                 }
1077
1078                 if (ch == '?') {
1079                         pprintf("\rOne of ...                         \n");
1080                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1081                                 if (cmdmatch(cmdbuf, cptr, cmdpos)) {
1082                                         for (a = 0; a < 5; ++a) {
1083                                                 pprintf("%s ", cmd_expand(cptr->c_keys[a], 1));
1084                                         }
1085                                         pprintf("\n");
1086                                 }
1087                         }
1088
1089                         pprintf("\n%s%c ", room_name, room_prompt(room_flags));
1090                         got = 0;
1091                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1092                                 if ((got == 0) && (cmdmatch(cmdbuf, cptr, cmdpos))) {
1093                                         for (a = 0; a < cmdpos; ++a) {
1094                                                 pprintf("%s ",
1095                                                        cmd_expand(cptr->c_keys[a], 0));
1096                                         }
1097                                         got = 1;
1098                                 }
1099                         }
1100                 }
1101         }
1102
1103 }
1104
1105
1106
1107
1108
1109 /*
1110  * set tty modes.  commands are:
1111  *
1112  * 01- set to bbs mode
1113  * 2 - save current settings for later restoral
1114  * 3 - restore saved settings
1115  */
1116 #ifdef HAVE_TERMIOS_H
1117 void sttybbs(int cmd)
1118 {                               /* SysV version of sttybbs() */
1119         struct termios live;
1120         static struct termios saved_settings;
1121         static int last_cmd = 0;
1122
1123         if (cmd == SB_LAST)
1124                 cmd = last_cmd;
1125         else
1126                 last_cmd = cmd;
1127
1128         if ((cmd == 0) || (cmd == 1)) {
1129                 tcgetattr(0, &live);
1130                 live.c_iflag = ISTRIP | IXON | IXANY;
1131                 live.c_oflag = OPOST | ONLCR;
1132                 live.c_lflag = ISIG | NOFLSH;
1133
1134                 live.c_cc[VINTR] = (-1);
1135                 live.c_cc[VQUIT] = (-1);
1136
1137 #ifdef hpux
1138                 live.c_cc[VMIN] = 0;
1139                 live.c_cc[VTIME] = 0;
1140 #endif
1141
1142                 /* do we even need this stuff anymore? */
1143                 /* live.c_line=0; */
1144                 live.c_cc[VERASE] = 8;
1145                 live.c_cc[VKILL] = 24;
1146                 live.c_cc[VEOF] = 1;
1147                 live.c_cc[VEOL] = 255;
1148                 live.c_cc[VEOL2] = 0;
1149                 live.c_cc[VSTART] = 0;
1150                 tcsetattr(0, TCSADRAIN, &live);
1151         }
1152         if (cmd == 2) {
1153                 tcgetattr(0, &saved_settings);
1154         }
1155         if (cmd == 3) {
1156                 tcsetattr(0, TCSADRAIN, &saved_settings);
1157         }
1158 }
1159 #else
1160 void sttybbs(int cmd)
1161 {                               /* BSD version of sttybbs() */
1162         struct sgttyb live;
1163         static struct sgttyb saved_settings;
1164         static int last_cmd = 0;
1165
1166         if (cmd == SB_LAST)
1167                 cmd = last_cmd;
1168         else
1169                 last_cmd = cmd;
1170
1171         if ((cmd == 0) || (cmd == 1)) {
1172                 gtty(0, &live);
1173                 live.sg_flags |= CBREAK;
1174                 live.sg_flags |= CRMOD;
1175                 live.sg_flags |= NL1;
1176                 live.sg_flags &= ~ECHO;
1177                 if (cmd == 1)
1178                         live.sg_flags |= NOFLSH;
1179                 stty(0, &live);
1180         }
1181         if (cmd == 2) {
1182                 gtty(0, &saved_settings);
1183         }
1184         if (cmd == 3) {
1185                 stty(0, &saved_settings);
1186         }
1187 }
1188 #endif
1189
1190
1191 /*
1192  * display_help()  -  help file viewer
1193  */
1194 void display_help(char *name)
1195 {
1196         formout(name);
1197 }
1198
1199
1200 /*
1201  * fmout()  -  Citadel text formatter and paginator
1202  */
1203 int fmout(
1204         int width,      /* screen width to use */
1205         FILE *fpin,     /* file to read from, or NULL to read from server */
1206         FILE *fpout,    /* File to write to, or NULL to write to screen */
1207         char pagin,     /* nonzero if we should use the paginator */
1208         int height,     /* screen height to use */
1209         int starting_lp,/* starting value for lines_printed, -1 for global */
1210         char subst)     /* nonzero if we should use hypertext mode */
1211 {
1212         int a, b, c, d, old;
1213         int real = (-1);
1214         char aaa[140];
1215         char buffer[512];
1216         int eof_flag = 0;
1217
1218         num_urls = 0;   /* Start with a clean slate of embedded URL's */
1219
1220         if (starting_lp >= 0) {
1221                 lines_printed = starting_lp;
1222         }
1223         strcpy(aaa, "");
1224         old = 255;
1225         strcpy(buffer, "");
1226         c = 1;                  /* c is the current pos */
1227
1228 FMTA:   while ((eof_flag == 0) && (strlen(buffer) < 126)) {
1229                 if (fpin != NULL) {     /* read from file */
1230                         if (feof(fpin))
1231                                 eof_flag = 1;
1232                         if (eof_flag == 0) {
1233                                 a = getc(fpin);
1234                                 buffer[strlen(buffer) + 1] = 0;
1235                                 buffer[strlen(buffer)] = a;
1236                         }
1237                 } else {        /* read from server */
1238                         d = strlen(buffer);
1239                         serv_gets(&buffer[d]);
1240                         while ((!isspace(buffer[d])) && (isspace(buffer[strlen(buffer) - 1])))
1241                                 buffer[strlen(buffer) - 1] = 0;
1242                         if (!strcmp(&buffer[d], "000")) {
1243                                 buffer[d] = 0;
1244                                 eof_flag = 1;
1245                                 while (isspace(buffer[strlen(buffer) - 1]))
1246                                         buffer[strlen(buffer) - 1] = 0;
1247                         }
1248                         d = strlen(buffer);
1249                         buffer[d] = 10;
1250                         buffer[d + 1] = 0;
1251                 }
1252         }
1253
1254         if ( (!strncasecmp(buffer, "http://", 7))
1255            || (!strncasecmp(buffer, "ftp://", 6)) ) {
1256                 safestrncpy(urls[num_urls], buffer, (SIZ-1));
1257                 for (a=0; a<strlen(urls[num_urls]); ++a) {
1258                         b = urls[num_urls][a];
1259                         if ( (b==' ') || (b==')') || (b=='>') || (b==10)
1260                            || (b==13) || (b==9) || (b=='\"') )
1261                                 urls[num_urls][a] = 0;
1262                 }
1263                 ++num_urls;
1264         }
1265
1266         buffer[strlen(buffer) + 1] = 0;
1267         a = buffer[0];
1268         strcpy(buffer, &buffer[1]);
1269
1270         old = real;
1271         real = a;
1272         if (a <= 0)
1273                 goto FMTEND;
1274
1275         if (((a == 13) || (a == 10)) && (old != 13) && (old != 10))
1276                 a = 32;
1277         if (((old == 13) || (old == 10)) && (isspace(real))) {
1278                 if (fpout) {
1279                         fprintf(fpout, "\n");
1280                 } else {
1281                         scr_printf("\n");
1282                         ++lines_printed;
1283                         lines_printed = checkpagin(lines_printed, pagin, height);
1284                 }
1285                 c = 1;
1286         }
1287         if (a > 126)
1288                 goto FMTA;
1289
1290         if (a > 32) {
1291                 if (((strlen(aaa) + c) > (width - 1)) && (strlen(aaa) > (width - 1))) {
1292                         if (fpout) {
1293                                 fprintf(fpout, "\n%s", aaa);
1294                         } else {
1295                                 scr_printf("\n%s", aaa);
1296                                 ++lines_printed;
1297                                 lines_printed = checkpagin(lines_printed, pagin, height);
1298                         }
1299                         c = strlen(aaa);
1300                         aaa[0] = 0;
1301                 }
1302                 b = strlen(aaa);
1303                 aaa[b] = a;
1304                 aaa[b + 1] = 0;
1305         }
1306         if (a == 32) {
1307                 if ((strlen(aaa) + c) > (width - 1)) {
1308                         c = 1;
1309                         if (fpout) {
1310                                 fprintf(fpout, "\n");
1311                         } else {
1312                                 scr_printf("\n");
1313                                 ++lines_printed;
1314                                 lines_printed = checkpagin(lines_printed, pagin, height);
1315                         }
1316                 }
1317                 if (fpout) {
1318                         fprintf(fpout, "%s ", aaa);
1319                 } else {
1320                         scr_printf("%s ", aaa);
1321                 }
1322                 ++c;
1323                 c = c + strlen(aaa);
1324                 strcpy(aaa, "");
1325                 goto FMTA;
1326         }
1327         if ((a == 13) || (a == 10)) {
1328                 if (fpout) {
1329                         fprintf(fpout, "%s\n", aaa);
1330                 } else {
1331                         scr_printf("%s\n", aaa);
1332                         ++lines_printed;
1333                         lines_printed = checkpagin(lines_printed, pagin, height);
1334                 }
1335                 c = 1;
1336                 if (sigcaught) goto OOPS;
1337                 strcpy(aaa, "");
1338                 goto FMTA;
1339         }
1340         goto FMTA;
1341
1342         /* keypress caught; drain the server */
1343 OOPS:   do {
1344                 serv_gets(aaa);
1345         } while (strcmp(aaa, "000"));
1346
1347 FMTEND:
1348         if (fpout) {
1349                 fprintf(fpout, "\n");
1350         } else {
1351                 scr_printf("\n");
1352                 ++lines_printed;
1353                 lines_printed = checkpagin(lines_printed, pagin, height);
1354         }
1355         return (sigcaught);
1356 }
1357
1358
1359 /*
1360  * support ANSI color if defined
1361  */
1362 void color(int colornum)
1363 {
1364         static int is_bold = 0;
1365         static int hold_color, current_color;
1366
1367         if (colornum == COLOR_PUSH) {
1368                 hold_color = current_color;
1369                 return;
1370         }
1371
1372         if (colornum == COLOR_POP) {
1373                 color(hold_color);
1374                 return;
1375         }
1376
1377         current_color = colornum;
1378         if (enable_color) {
1379 #ifdef HAVE_CURSES_H
1380                 if (scr_color(colornum))
1381                         return;
1382 #endif
1383                 /* When switching to dim white, actually output an 'original
1384                  * pair' sequence -- this looks better on black-on-white
1385                  * terminals.
1386                  */
1387                 if (colornum == DIM_WHITE)
1388                         printf("\033[39;49m");
1389                 else
1390                         printf("\033[3%d;40m", (colornum & 7));
1391
1392                 if ((colornum >= 8) && (is_bold == 0)) {
1393                         printf("\033[1m");
1394                         is_bold = 1;
1395                 } else if ((colornum < 8) && (is_bold == 1)) {
1396                         printf("\033[0m");
1397                         is_bold = 0;
1398                 }
1399                 scr_flush();
1400         }
1401 }
1402
1403 void cls(int colornum)
1404 {
1405         if (enable_color) {
1406                 printf("\033[4%dm\033[2J\033[H\033[0m", colornum);
1407                 scr_flush();
1408         }
1409 }
1410
1411
1412 /*
1413  * Detect whether ANSI color is available (answerback)
1414  */
1415 void send_ansi_detect(void)
1416 {
1417         if (rc_ansi_color == 2) {
1418                 printf("\033[c");
1419                 scr_flush();
1420                 time(&AnsiDetect);
1421         }
1422 }
1423
1424 void look_for_ansi(void)
1425 {
1426         fd_set rfds;
1427         struct timeval tv;
1428         char abuf[512];
1429         time_t now;
1430         int a;
1431
1432         if (rc_ansi_color == 0) {
1433                 enable_color = 0;
1434         } else if (rc_ansi_color == 1) {
1435                 enable_color = 1;
1436         } else if (rc_ansi_color == 2) {
1437
1438                 /* otherwise, do the auto-detect */
1439
1440                 strcpy(abuf, "");
1441
1442                 time(&now);
1443                 if ((now - AnsiDetect) < 2)
1444                         sleep(1);
1445
1446                 do {
1447                         FD_ZERO(&rfds);
1448                         FD_SET(0, &rfds);
1449                         tv.tv_sec = 0;
1450                         tv.tv_usec = 1;
1451
1452                         select(1, &rfds, NULL, NULL, &tv);
1453                         if (FD_ISSET(0, &rfds)) {
1454                                 abuf[strlen(abuf) + 1] = 0;
1455                                 read(0, &abuf[strlen(abuf)], 1);
1456                         }
1457                 } while (FD_ISSET(0, &rfds));
1458
1459                 for (a = 0; a < strlen(abuf); ++a) {
1460                         if ((abuf[a] == 27) && (abuf[a + 1] == '[')
1461                             && (abuf[a + 2] == '?')) {
1462                                 enable_color = 1;
1463                         }
1464                 }
1465         }
1466 }
1467
1468
1469 /*
1470  * Display key options (highlight hotkeys inside angle brackets)
1471  */
1472 void keyopt(char *buf) {
1473         int i;
1474
1475         color(DIM_WHITE);
1476         for (i=0; i<strlen(buf); ++i) {
1477                 if (buf[i]=='<') {
1478                         scr_putc(buf[i]);
1479                         color(BRIGHT_MAGENTA);
1480                 } else {
1481                         if (buf[i]=='>') {
1482                                 color(DIM_WHITE);
1483                         }
1484                         scr_putc(buf[i]);
1485                 }
1486         }
1487         color(DIM_WHITE);
1488 }
1489
1490
1491
1492 /*
1493  * Present a key-menu line choice type of thing
1494  */
1495 char keymenu(char *menuprompt, char *menustring) {
1496         int i, c, a;
1497         int choices;
1498         int do_prompt = 0;
1499         char buf[1024];
1500         int ch;
1501         int display_prompt = 1;
1502
1503         choices = num_tokens(menustring, '|');
1504
1505         if (menuprompt != NULL) do_prompt = 1;
1506         if (menuprompt != NULL) if (strlen(menuprompt)==0) do_prompt = 0;
1507
1508         while (1) {
1509                 if (display_prompt) {
1510                         if (do_prompt) {
1511                                 scr_printf("%s ", menuprompt);
1512                         }
1513                         else {
1514                                 for (i=0; i<choices; ++i) {
1515                                         extract(buf, menustring, i);
1516                                         keyopt(buf);
1517                                         scr_printf(" ");
1518                                 }
1519                         }
1520                         scr_printf(" -> ");
1521                         display_prompt = 0;
1522                 }
1523                 ch = lkey();
1524
1525                 if ( (do_prompt) && (ch=='?') ) {
1526                         scr_printf("\rOne of...                               ");
1527                         scr_printf("                                      \n");
1528                         for (i=0; i<choices; ++i) {
1529                                 extract(buf, menustring, i);
1530                                 scr_printf("   ");
1531                                 keyopt(buf);
1532                                 scr_printf("\n");
1533                         }
1534                         scr_printf("\n");
1535                         display_prompt = 1;
1536                 }
1537
1538                 for (i=0; i<choices; ++i) {
1539                         extract(buf, menustring, i);
1540                         for (c=1; c<strlen(buf); ++c) {
1541                                 if ( (ch == tolower(buf[c]))
1542                                    && (buf[c-1]=='<')
1543                                    && (buf[c+1]=='>') ) {
1544                                         for (a=0; a<strlen(buf); ++a) {
1545                                                 if ( (a!=(c-1)) && (a!=(c+1))) {
1546                                                         scr_putc(buf[a]);
1547                                                 }
1548                                         }
1549                                         scr_printf("\n\n");
1550                                         return ch;
1551                                 }
1552                         }
1553                 }
1554         }
1555 }