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 static void do_keepalive(void)
 384 {
 385         time_t now;
 386
 387         time(&now);
 388         if ((now - idlet) < ((long) S_KEEPALIVE))
 389                 return;
 390
 391         /* Do a space-backspace to keep telnet sessions from idling out */
 392         scr_printf(" %c", 8);
 393         scr_flush();
 394
 395 #ifdef THREADED_CLIENT
 396         if (async_ka_enabled)
 397                 async_ka_exec();
 398         else
 399 #endif
 400                 really_do_keepalive();
 401 }
 402
 403
 404 /* Now the actual async-keepalve API that we expose to higher levels:
 405    async_ka_start() and async_ka_end(). These do nothing when we don't have
 406    threading enabled, so we avoid sprinkling ifdef's throughout the code. */
 407
 408 /* wait for a background keepalive to complete. this must be done before
 409    attempting any further server requests! */
 410 void async_ka_end(void)
 411 {
 412 #ifdef THREADED_CLIENT
 413         if (ka_thr_active)
 414                 pthread_join(ka_thr_handle, NULL);
 415
 416         async_ka_enabled--;
 417 #endif
 418 }
 419
 420 /* tell do_keepalive() that keepalives are asynchronous. */
 421 void async_ka_start(void)
 422 {
 423 #ifdef THREADED_CLIENT
 424         async_ka_enabled++;
 425 #endif
 426 }
 427
 428
 429 int inkey(void)
 430 {                               /* get a character from the keyboard, with   */
 431         int a;                  /* the watchdog timer in effect if necessary */
 432         fd_set rfds;
 433         struct timeval tv;
 434         time_t start_time, now;
 435
 436         scr_flush();
 437         lines_printed = 0;
 438         time(&start_time);
 439
 440         do {
 441
 442                 /* This loop waits for keyboard input.  If the keepalive
 443                  * timer expires, it sends a keepalive to the server if
 444                  * necessary and then waits again.
 445                  */
 446                 do {
 447                         do_keepalive();
 448
 449                         FD_ZERO(&rfds);
 450                         FD_SET(0, &rfds);
 451                         tv.tv_sec = S_KEEPALIVE;
 452                         tv.tv_usec = 0;
 453
 454                         time(&now);
 455                         select(1, &rfds, NULL, NULL, &tv);
 456                 } while (!FD_ISSET(0, &rfds));
 457
 458
 459
 460
 461                 /* At this point, there's input, so fetch it.
 462                  * (There's a hole in the bucket...)
 463                  */
 464                 a = scr_getc();
 465                 if (a == 127)
 466                         a = 8;
 467                 if (a > 126)
 468                         a = 0;
 469                 if (a == 13)
 470                         a = 10;
 471                 if (((a != 4) && (a != 10) && (a != 8) && (a != NEXT_KEY) && (a != STOP_KEY))
 472                     && ((a < 32) || (a > 126)))
 473                         a = 0;
 474         } while (a == 0);
 475         return (a);
 476 }
 477
 478
 479 int yesno(void)
 480 {                               /* Returns 1 for yes, 0 for no */
 481         int a;
 482         while (1) {
 483                 a = inkey();
 484                 a = tolower(a);
 485                 if (a == 'y') {
 486                         scr_printf("Yes\n");
 487                         return (1);
 488                 }
 489                 if (a == 'n') {
 490                         scr_printf("No\n");
 491                         return (0);
 492                 }
 493         }
 494 }
 495
 496 /* Returns 1 for yes, 0 for no, arg is default value */
 497 int yesno_d(int d)
 498 {
 499         int a;
 500         while (1) {
 501                 a = inkey();
 502                 a = tolower(a);
 503                 if (a == 10)
 504                         a = (d ? 'y' : 'n');
 505                 if (a == 'y') {
 506                         scr_printf("Yes\n");
 507                         return (1);
 508                 }
 509                 if (a == 'n') {
 510                         scr_printf("No\n");
 511                         return (0);
 512                 }
 513         }
 514 }
 515
 516
 517
 518
 519 /* Gets a line from the terminal */
 520 /* string == Pointer to string buffer */
 521 /* lim == Maximum length - if negative, no-show */
 522 void getline(char *string, int lim)
 523 {
 524         int a, b;
 525         char flag = 0;
 526
 527         if (lim < 0) {
 528                 lim = (0 - lim);
 529                 flag = 1;
 530         }
 531         strcpy(string, "");
 532         gl_string = string;
 533         async_ka_start();
 534       GLA:a = inkey();
 535         a = (a & 127);
 536         if ((a == 8) && (strlen(string) == 0))
 537                 goto GLA;
 538         if ((a != 10) && (a != 8) && (strlen(string) == lim))
 539                 goto GLA;
 540         if ((a == 8) && (string[0] != 0)) {
 541                 string[strlen(string) - 1] = 0;
 542                 scr_putc(8);
 543                 scr_putc(32);
 544                 scr_putc(8);
 545                 goto GLA;
 546         }
 547         if ((a == 10)) {
 548                 scr_putc(10);
 549                 async_ka_end();
 550                 return;
 551         }
 552         if (a < 32)
 553                 a = '.';
 554         b = strlen(string);
 555         string[b] = a;
 556         string[b + 1] = 0;
 557         if (flag == 0)
 558                 scr_putc(a);
 559         if (flag == 1)
 560                 scr_putc('*');
 561         goto GLA;
 562 }
 563
 564
 565 /*
 566  * strprompt()  -  prompt for a string, print the existing value and
 567  *                 allow the user to press return to keep it...
 568  */
 569 void strprompt(char *prompt, char *str, int len)
 570 {
 571         char buf[128];
 572         print_express();
 573         color(DIM_WHITE);
 574         scr_printf("%s ", prompt);
 575         color(DIM_MAGENTA);
 576         scr_printf("[");
 577         color(BRIGHT_MAGENTA);
 578         scr_printf("%s", str);
 579         color(DIM_MAGENTA);
 580         scr_printf("]");
 581         color(DIM_WHITE);
 582         scr_printf(": ");
 583         color(BRIGHT_CYAN);
 584         getline(buf, len);
 585         if (buf[0] != 0)
 586                 strcpy(str, buf);
 587         color(DIM_WHITE);
 588 }
 589
 590 /*
 591  * boolprompt()  -  prompt for a yes/no, print the existing value and
 592  *                  allow the user to press return to keep it...
 593  */
 594 int boolprompt(char *prompt, int prev_val)
 595 {
 596         int r;
 597
 598         color(DIM_WHITE);
 599         scr_printf("%s ", prompt);
 600         color(DIM_MAGENTA);
 601         scr_printf(" [");
 602         color(BRIGHT_MAGENTA);
 603         scr_printf("%s", (prev_val ? "Yes" : "No"));
 604         color(DIM_MAGENTA);
 605         scr_printf("]: ");
 606         color(BRIGHT_CYAN);
 607         r = (yesno_d(prev_val));
 608         color(DIM_WHITE);
 609         return r;
 610 }
 611
 612 /*
 613  * intprompt()  -  like strprompt(), except for an integer
 614  *                 (note that it RETURNS the new value!)
 615  */
 616 int intprompt(char *prompt, int ival, int imin, int imax)
 617 {
 618         char buf[16];
 619         int i;
 620         int p;
 621
 622         do {
 623                 i = ival;
 624                 snprintf(buf, sizeof buf, "%d", i);
 625                 strprompt(prompt, buf, 15);
 626                 i = atoi(buf);
 627                 for (p=0; p<strlen(buf); ++p) {
 628                         if ( (!isdigit(buf[p]))
 629                            && ( (buf[p]!='-') || (p!=0) )  )
 630                                 i = imin - 1;
 631                 }
 632                 if (i < imin)
 633                         scr_printf("*** Must be no less than %d.\n", imin);
 634                 if (i > imax)
 635                         scr_printf("*** Must be no more than %d.\n", imax);
 636         } while ((i < imin) || (i > imax));
 637         return (i);
 638 }
 639
 640 /*
 641  * newprompt()  -  prompt for a string with no existing value
 642  *                 (clears out string buffer first)
 643  */
 644 void newprompt(char *prompt, char *str, int len)
 645 {
 646         color(BRIGHT_MAGENTA);
 647         scr_printf("%s", prompt);
 648         color(DIM_MAGENTA);
 649         getline(str, len);
 650         color(DIM_WHITE);
 651 }
 652
 653
 654 int lkey(void)
 655 {                               /* returns a lower case value */
 656         int a;
 657         a = inkey();
 658         if (isupper(a))
 659                 a = tolower(a);
 660         return (a);
 661 }
 662
 663 /*
 664  * parse the citadel.rc file
 665  */
 666 void load_command_set(void)
 667 {
 668         FILE *ccfile;
 669         char buf[1024];
 670         struct citcmd *cptr;
 671         struct citcmd *lastcmd = NULL;
 672         int a, d;
 673         int b = 0;
 674
 675
 676         /* first, set up some defaults for non-required variables */
 677
 678         strcpy(editor_path, "");
 679         strcpy(printcmd, "");
 680         strcpy(rc_username, "");
 681         strcpy(rc_password, "");
 682         rc_floor_mode = 0;
 683         rc_exp_beep = 1;
 684         rc_allow_attachments = 0;
 685         rc_remember_passwords = 0;
 686         strcpy(rc_exp_cmd, "");
 687         rc_display_message_numbers = 0;
 688         rc_force_mail_prompts = 0;
 689         rc_ansi_color = 0;
 690         strcpy(rc_url_cmd, "");
 691         rc_encrypt = RC_DEFAULT;
 692 #ifdef HAVE_CURSES_H
 693         rc_screen = RC_DEFAULT;
 694 #endif
 695         rc_alt_semantics = 0;
 696
 697         /* now try to open the citadel.rc file */
 698
 699         ccfile = NULL;
 700         if (getenv("HOME") != NULL) {
 701                 snprintf(buf, sizeof buf, "%s/.citadelrc", getenv("HOME"));
 702                 ccfile = fopen(buf, "r");
 703         }
 704         if (ccfile == NULL) {
 705                 snprintf(buf, sizeof buf, "%s/citadel.rc", BBSDIR);
 706                 ccfile = fopen(buf, "r");
 707         }
 708         if (ccfile == NULL) {
 709                 ccfile = fopen("/etc/citadel.rc", "r");
 710         }
 711         if (ccfile == NULL) {
 712                 ccfile = fopen("./citadel.rc", "r");
 713         }
 714         if (ccfile == NULL) {
 715                 perror("commands: cannot open citadel.rc");
 716                 logoff(errno);
 717         }
 718         while (fgets(buf, sizeof buf, ccfile) != NULL) {
 719                 while ((strlen(buf) > 0) ? (isspace(buf[strlen(buf) - 1])) : 0)
 720                         buf[strlen(buf) - 1] = 0;
 721
 722                 if (!strncasecmp(buf, "encrypt=", 8)) {
 723                         if (!strcasecmp(&buf[8], "yes"))
 724                                 rc_encrypt = RC_YES;
 725                         else if (!strcasecmp(&buf[8], "no"))
 726                                 rc_encrypt = RC_NO;
 727                         else if (!strcasecmp(&buf[8], "default"))
 728                                 rc_encrypt = RC_DEFAULT;
 729                 }
 730
 731 #ifdef HAVE_CURSES_H
 732                 if (!strncasecmp(buf, "fullscreen=", 11)) {
 733                         if (!strcasecmp(&buf[11], "yes"))
 734                                 rc_screen = RC_YES;
 735                         else if (!strcasecmp(&buf[11], "no"))
 736                                 rc_screen = RC_NO;
 737                 }
 738 #endif
 739
 740                 if (!strncasecmp(buf, "editor=", 7))
 741                         strcpy(editor_path, &buf[7]);
 742
 743                 if (!strncasecmp(buf, "printcmd=", 9))
 744                         strcpy(printcmd, &buf[9]);
 745
 746                 if (!strncasecmp(buf, "expcmd=", 7))
 747                         strcpy(rc_exp_cmd, &buf[7]);
 748
 749                 if (!strncasecmp(buf, "local_screen_dimensions=", 24))
 750                         have_xterm = (char) atoi(&buf[24]);
 751
 752                 if (!strncasecmp(buf, "use_floors=", 11)) {
 753                         if (!strcasecmp(&buf[11], "yes"))
 754                                 rc_floor_mode = RC_YES;
 755                         if (!strcasecmp(&buf[11], "no"))
 756                                 rc_floor_mode = RC_NO;
 757                         if (!strcasecmp(&buf[11], "default"))
 758                                 rc_floor_mode = RC_DEFAULT;
 759                 }
 760                 if (!strncasecmp(buf, "beep=", 5)) {
 761                         rc_exp_beep = atoi(&buf[5]);
 762                 }
 763                 if (!strncasecmp(buf, "allow_attachments=", 18)) {
 764                         rc_allow_attachments = atoi(&buf[18]);
 765                 }
 766                 if (!strncasecmp(buf, "remember_passwords=", 19)) {
 767                         rc_remember_passwords = atoi(&buf[19]);
 768                 }
 769                 if (!strncasecmp(buf, "display_message_numbers=", 24)) {
 770                         rc_display_message_numbers = atoi(&buf[24]);
 771                 }
 772                 if (!strncasecmp(buf, "force_mail_prompts=", 19)) {
 773                         rc_force_mail_prompts = atoi(&buf[19]);
 774                 }
 775                 if (!strncasecmp(buf, "ansi_color=", 11)) {
 776                         if (!strncasecmp(&buf[11], "on", 2))
 777                                 rc_ansi_color = 1;
 778                         if (!strncasecmp(&buf[11], "auto", 4))
 779                                 rc_ansi_color = 2;      /* autodetect */
 780                         if (!strncasecmp(&buf[11], "user", 4))
 781                                 rc_ansi_color = 3;      /* user config */
 782                 }
 783                 if (!strncasecmp(buf, "prompt_control=", 15)) {
 784                         if (!strncasecmp(&buf[15], "on", 2))
 785                                 rc_prompt_control = 1;
 786                         if (!strncasecmp(&buf[15], "user", 4))
 787                                 rc_prompt_control = 3;  /* user config */
 788                 }
 789                 if (!strncasecmp(buf, "username=", 9))
 790                         strcpy(rc_username, &buf[9]);
 791
 792                 if (!strncasecmp(buf, "password=", 9))
 793                         strcpy(rc_password, &buf[9]);
 794
 795                 if (!strncasecmp(buf, "urlcmd=", 7))
 796                         strcpy(rc_url_cmd, &buf[7]);
 797
 798                 if (!strncasecmp(buf, "alternate_semantics=", 20)) {
 799                         if (!strncasecmp(&buf[11], "yes", 3))
 800                                 rc_alt_semantics = 1;
 801                         if (!strncasecmp(&buf[11], "no", 2))
 802                                 rc_alt_semantics = 0;
 803                 }
 804                 if (!strncasecmp(buf, "cmd=", 4)) {
 805                         strcpy(buf, &buf[4]);
 806
 807                         cptr = (struct citcmd *) malloc(sizeof(struct citcmd));
 808
 809                         cptr->c_cmdnum = atoi(buf);
 810                         for (d = strlen(buf); d >= 0; --d)
 811                                 if (buf[d] == ',')
 812                                         b = d;
 813                         strcpy(buf, &buf[b + 1]);
 814
 815                         cptr->c_axlevel = atoi(buf);
 816                         for (d = strlen(buf); d >= 0; --d)
 817                                 if (buf[d] == ',')
 818                                         b = d;
 819                         strcpy(buf, &buf[b + 1]);
 820
 821                         for (a = 0; a < 5; ++a)
 822                                 cptr->c_keys[a][0] = 0;
 823
 824                         a = 0;
 825                         b = 0;
 826                         buf[strlen(buf) + 1] = 0;
 827                         while (strlen(buf) > 0) {
 828                                 b = strlen(buf);
 829                                 for (d = strlen(buf); d >= 0; --d)
 830                                         if (buf[d] == ',')
 831                                                 b = d;
 832                                 strncpy(cptr->c_keys[a], buf, b);
 833                                 cptr->c_keys[a][b] = 0;
 834                                 if (buf[b] == ',')
 835                                         strcpy(buf, &buf[b + 1]);
 836                                 else
 837                                         strcpy(buf, "");
 838                                 ++a;
 839                         }
 840
 841                         cptr->next = NULL;
 842                         if (cmdlist == NULL)
 843                                 cmdlist = cptr;
 844                         else
 845                                 lastcmd->next = cptr;
 846                         lastcmd = cptr;
 847                 }
 848         }
 849         fclose(ccfile);
 850 }
 851
 852
 853
 854 /*
 855  * return the key associated with a command
 856  */
 857 char keycmd(char *cmdstr)
 858 {
 859         int a;
 860
 861         for (a = 0; a < strlen(cmdstr); ++a)
 862                 if (cmdstr[a] == '&')
 863                         return (tolower(cmdstr[a + 1]));
 864         return (0);
 865 }
 866
 867
 868 /*
 869  * Output the string from a key command without the ampersand
 870  * "mode" should be set to 0 for normal or 1 for <C>ommand key highlighting
 871  */
 872 char *cmd_expand(char *strbuf, int mode)
 873 {
 874         int a;
 875         static char exp[64];
 876         char buf[1024];
 877
 878         strcpy(exp, strbuf);
 879
 880         for (a = 0; a < strlen(exp); ++a) {
 881                 if (strbuf[a] == '&') {
 882
 883                         if (mode == 0) {
 884                                 strcpy(&exp[a], &exp[a + 1]);
 885                         }
 886                         if (mode == 1) {
 887                                 exp[a] = '<';
 888                                 strcpy(buf, &exp[a + 2]);
 889                                 exp[a + 2] = '>';
 890                                 exp[a + 3] = 0;
 891                                 strcat(exp, buf);
 892                         }
 893                 }
 894                 if (!strncmp(&exp[a], "^r", 2)) {
 895                         strcpy(buf, exp);
 896                         strcpy(&exp[a], room_name);
 897                         strcat(exp, &buf[a + 2]);
 898                 }
 899                 if (!strncmp(&exp[a], "^c", 2)) {
 900                         exp[a] = ',';
 901                         strcpy(&exp[a + 1], &exp[a + 2]);
 902                 }
 903         }
 904
 905         return (exp);
 906 }
 907
 908
 909
 910 /*
 911  * Comparison function to determine if entered commands match a
 912  * command loaded from the config file.
 913  */
 914 int cmdmatch(char *cmdbuf, struct citcmd *cptr, int ncomp)
 915 {
 916         int a;
 917         int cmdax;
 918
 919         cmdax = 0;
 920         if (is_room_aide)
 921                 cmdax = 1;
 922         if (axlevel >= 6)
 923                 cmdax = 2;
 924
 925         for (a = 0; a < ncomp; ++a) {
 926                 if ((tolower(cmdbuf[a]) != keycmd(cptr->c_keys[a]))
 927                     || (cptr->c_axlevel > cmdax))
 928                         return (0);
 929         }
 930         return (1);
 931 }
 932
 933
 934 /*
 935  * This function returns 1 if a given command requires a string input
 936  */
 937 int requires_string(struct citcmd *cptr, int ncomp)
 938 {
 939         int a;
 940         char buf[64];
 941
 942         strcpy(buf, cptr->c_keys[ncomp - 1]);
 943         for (a = 0; a < strlen(buf); ++a) {
 944                 if (buf[a] == ':')
 945                         return (1);
 946         }
 947         return (0);
 948 }
 949
 950
 951 /*
 952  * Input a command at the main prompt.
 953  * This function returns an integer command number.  If the command prompts
 954  * for a string then it is placed in the supplied buffer.
 955  */
 956 int getcmd(char *argbuf)
 957 {
 958         char cmdbuf[5];
 959         int cmdspaces[5];
 960         int cmdpos;
 961         int ch;
 962         int a;
 963         int got;
 964         int this_lazy_cmd;
 965         struct citcmd *cptr;
 966
 967         /*
 968          * Starting a new command now, so set sigcaught to 0.  This variable
 969          * is set to nonzero (usually NEXT_KEY or STOP_KEY) if a command has
 970          * been interrupted by a keypress.
 971          */
 972         sigcaught = 0;
 973
 974         /* Switch color support on or off if we're in user mode */
 975         if (rc_ansi_color == 3) {
 976                 if (userflags & US_COLOR)
 977                         enable_color = 1;
 978                 else
 979                         enable_color = 0;
 980         }
 981         /* if we're running in idiot mode, display a cute little menu */
 982         IFNEXPERT formout("mainmenu");
 983
 984         print_express();        /* print express messages if there are any */
 985         strcpy(argbuf, "");
 986         cmdpos = 0;
 987         for (a = 0; a < 5; ++a)
 988                 cmdbuf[a] = 0;
 989         /* now the room prompt... */
 990         ok_to_interrupt = 1;
 991         color(BRIGHT_WHITE);
 992         scr_printf("\n%s", room_name);
 993         color(DIM_WHITE);
 994         scr_printf("%c ", room_prompt(room_flags));
 995         scr_flush();
 996
 997         while (1) {
 998                 ch = inkey();
 999                 ok_to_interrupt = 0;
1000
1001                 /* Handle the backspace key, but only if there's something
1002                  * to backspace over...
1003                  */
1004                 if ((ch == 8) && (cmdpos > 0)) {
1005                         back(cmdspaces[cmdpos - 1] + 1);
1006                         cmdbuf[cmdpos] = 0;
1007                         --cmdpos;
1008                 }
1009                 /* Spacebar invokes "lazy traversal" commands */
1010                 if ((ch == 32) && (cmdpos == 0)) {
1011                         this_lazy_cmd = next_lazy_cmd;
1012                         if (this_lazy_cmd == 13)
1013                                 next_lazy_cmd = 5;
1014                         if (this_lazy_cmd == 5)
1015                                 next_lazy_cmd = 13;
1016                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1017                                 if (cptr->c_cmdnum == this_lazy_cmd) {
1018                                         for (a = 0; a < 5; ++a)
1019                                                 if (cptr->c_keys[a][0] != 0)
1020                                                         scr_printf("%s ", cmd_expand(
1021                                                                                         cptr->c_keys[a], 0));
1022                                         scr_printf("\n");
1023                                         return (this_lazy_cmd);
1024                                 }
1025                         }
1026                         scr_printf("\n");
1027                         return (this_lazy_cmd);
1028                 }
1029                 /* Otherwise, process the command */
1030                 cmdbuf[cmdpos] = tolower(ch);
1031
1032                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1033                         if (cmdmatch(cmdbuf, cptr, cmdpos + 1)) {
1034
1035                                 scr_printf("%s", cmd_expand(cptr->c_keys[cmdpos], 0));
1036                                 cmdspaces[cmdpos] = strlen(
1037                                     cmd_expand(cptr->c_keys[cmdpos], 0));
1038                                 if (cmdpos < 4)
1039                                         if ((cptr->c_keys[cmdpos + 1]) != 0)
1040                                                 scr_putc(' ');
1041                                 ++cmdpos;
1042                         }
1043                 }
1044
1045                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1046                         if (cmdmatch(cmdbuf, cptr, 5)) {
1047                                 /* We've found our command. */
1048                                 if (requires_string(cptr, cmdpos)) {
1049                                         getline(argbuf, 32);
1050                                 } else {
1051                                         scr_printf("\n");
1052                                 }
1053
1054                                 /* If this command is one that changes rooms,
1055                                  * then the next lazy-command (space bar)
1056                                  * should be "read new" instead of "goto"
1057                                  */
1058                                 if ((cptr->c_cmdnum == 5)
1059                                     || (cptr->c_cmdnum == 6)
1060                                     || (cptr->c_cmdnum == 47)
1061                                     || (cptr->c_cmdnum == 52)
1062                                     || (cptr->c_cmdnum == 16)
1063                                     || (cptr->c_cmdnum == 20))
1064                                         next_lazy_cmd = 13;
1065
1066                                 return (cptr->c_cmdnum);
1067
1068                         }
1069                 }
1070
1071                 if (ch == '?') {
1072                         pprintf("\rOne of ...                         \n");
1073                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1074                                 if (cmdmatch(cmdbuf, cptr, cmdpos)) {
1075                                         for (a = 0; a < 5; ++a) {
1076                                                 pprintf("%s ", cmd_expand(cptr->c_keys[a], 1));
1077                                         }
1078                                         pprintf("\n");
1079                                 }
1080                         }
1081
1082                         pprintf("\n%s%c ", room_name, room_prompt(room_flags));
1083                         got = 0;
1084                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1085                                 if ((got == 0) && (cmdmatch(cmdbuf, cptr, cmdpos))) {
1086                                         for (a = 0; a < cmdpos; ++a) {
1087                                                 pprintf("%s ",
1088                                                        cmd_expand(cptr->c_keys[a], 0));
1089                                         }
1090                                         got = 1;
1091                                 }
1092                         }
1093                 }
1094         }
1095
1096 }
1097
1098
1099
1100
1101
1102 /*
1103  * set tty modes.  commands are:
1104  *
1105  * 01- set to bbs mode
1106  * 2 - save current settings for later restoral
1107  * 3 - restore saved settings
1108  */
1109 #ifdef HAVE_TERMIOS_H
1110 void sttybbs(int cmd)
1111 {                               /* SysV version of sttybbs() */
1112         struct termios live;
1113         static struct termios saved_settings;
1114         static int last_cmd = 0;
1115
1116         if (cmd == SB_LAST)
1117                 cmd = last_cmd;
1118         else
1119                 last_cmd = cmd;
1120
1121         if ((cmd == 0) || (cmd == 1)) {
1122                 tcgetattr(0, &live);
1123                 live.c_iflag = ISTRIP | IXON | IXANY;
1124                 live.c_oflag = OPOST | ONLCR;
1125                 live.c_lflag = ISIG | NOFLSH;
1126
1127                 live.c_cc[VINTR] = (-1);
1128                 live.c_cc[VQUIT] = (-1);
1129
1130 #ifdef hpux
1131                 live.c_cc[VMIN] = 0;
1132                 live.c_cc[VTIME] = 0;
1133 #endif
1134
1135                 /* do we even need this stuff anymore? */
1136                 /* live.c_line=0; */
1137                 live.c_cc[VERASE] = 8;
1138                 live.c_cc[VKILL] = 24;
1139                 live.c_cc[VEOF] = 1;
1140                 live.c_cc[VEOL] = 255;
1141                 live.c_cc[VEOL2] = 0;
1142                 live.c_cc[VSTART] = 0;
1143                 tcsetattr(0, TCSADRAIN, &live);
1144         }
1145         if (cmd == 2) {
1146                 tcgetattr(0, &saved_settings);
1147         }
1148         if (cmd == 3) {
1149                 tcsetattr(0, TCSADRAIN, &saved_settings);
1150         }
1151 }
1152 #else
1153 void sttybbs(int cmd)
1154 {                               /* BSD version of sttybbs() */
1155         struct sgttyb live;
1156         static struct sgttyb saved_settings;
1157         static int last_cmd = 0;
1158
1159         if (cmd == SB_LAST)
1160                 cmd = last_cmd;
1161         else
1162                 last_cmd = cmd;
1163
1164         if ((cmd == 0) || (cmd == 1)) {
1165                 gtty(0, &live);
1166                 live.sg_flags |= CBREAK;
1167                 live.sg_flags |= CRMOD;
1168                 live.sg_flags |= NL1;
1169                 live.sg_flags &= ~ECHO;
1170                 if (cmd == 1)
1171                         live.sg_flags |= NOFLSH;
1172                 stty(0, &live);
1173         }
1174         if (cmd == 2) {
1175                 gtty(0, &saved_settings);
1176         }
1177         if (cmd == 3) {
1178                 stty(0, &saved_settings);
1179         }
1180 }
1181 #endif
1182
1183
1184 /*
1185  * display_help()  -  help file viewer
1186  */
1187 void display_help(char *name)
1188 {
1189         formout(name);
1190 }
1191
1192
1193 /*
1194  * fmout()  -  Citadel text formatter and paginator
1195  */
1196 int fmout(
1197         int width,      /* screen width to use */
1198         FILE *fpin,     /* file to read from, or NULL to read from server */
1199         FILE *fpout,    /* File to write to, or NULL to write to screen */
1200         char pagin,     /* nonzero if we should use the paginator */
1201         int height,     /* screen height to use */
1202         int starting_lp,/* starting value for lines_printed, -1 for global */
1203         char subst)     /* nonzero if we should use hypertext mode */
1204 {
1205         int a, b, c, d, old;
1206         int real = (-1);
1207         char aaa[140];
1208         char buffer[512];
1209         int eof_flag = 0;
1210
1211         num_urls = 0;   /* Start with a clean slate of embedded URL's */
1212
1213         if (starting_lp >= 0) {
1214                 lines_printed = starting_lp;
1215         }
1216         strcpy(aaa, "");
1217         old = 255;
1218         strcpy(buffer, "");
1219         c = 1;                  /* c is the current pos */
1220
1221 FMTA:   while ((eof_flag == 0) && (strlen(buffer) < 126)) {
1222                 if (fpin != NULL) {     /* read from file */
1223                         if (feof(fpin))
1224                                 eof_flag = 1;
1225                         if (eof_flag == 0) {
1226                                 a = getc(fpin);
1227                                 buffer[strlen(buffer) + 1] = 0;
1228                                 buffer[strlen(buffer)] = a;
1229                         }
1230                 } else {        /* read from server */
1231                         d = strlen(buffer);
1232                         serv_gets(&buffer[d]);
1233                         while ((!isspace(buffer[d])) && (isspace(buffer[strlen(buffer) - 1])))
1234                                 buffer[strlen(buffer) - 1] = 0;
1235                         if (!strcmp(&buffer[d], "000")) {
1236                                 buffer[d] = 0;
1237                                 eof_flag = 1;
1238                                 while (isspace(buffer[strlen(buffer) - 1]))
1239                                         buffer[strlen(buffer) - 1] = 0;
1240                         }
1241                         d = strlen(buffer);
1242                         buffer[d] = 10;
1243                         buffer[d + 1] = 0;
1244                 }
1245         }
1246
1247         if ( (!strncasecmp(buffer, "http://", 7))
1248            || (!strncasecmp(buffer, "ftp://", 6)) ) {
1249                 safestrncpy(urls[num_urls], buffer, (SIZ-1));
1250                 for (a=0; a<strlen(urls[num_urls]); ++a) {
1251                         b = urls[num_urls][a];
1252                         if ( (b==' ') || (b==')') || (b=='>') || (b==10)
1253                            || (b==13) || (b==9) || (b=='\"') )
1254                                 urls[num_urls][a] = 0;
1255                 }
1256                 ++num_urls;
1257         }
1258
1259         buffer[strlen(buffer) + 1] = 0;
1260         a = buffer[0];
1261         strcpy(buffer, &buffer[1]);
1262
1263         old = real;
1264         real = a;
1265         if (a <= 0)
1266                 goto FMTEND;
1267
1268         if (((a == 13) || (a == 10)) && (old != 13) && (old != 10))
1269                 a = 32;
1270         if (((old == 13) || (old == 10)) && (isspace(real))) {
1271                 if (fpout) {
1272                         fprintf(fpout, "\n");
1273                 } else {
1274                         scr_printf("\n");
1275                         ++lines_printed;
1276                         lines_printed = checkpagin(lines_printed, pagin, height);
1277                 }
1278                 c = 1;
1279         }
1280         if (a > 126)
1281                 goto FMTA;
1282
1283         if (a > 32) {
1284                 if (((strlen(aaa) + c) > (width - 1)) && (strlen(aaa) > (width - 1))) {
1285                         if (fpout) {
1286                                 fprintf(fpout, "\n%s", aaa);
1287                         } else {
1288                                 scr_printf("\n%s", aaa);
1289                                 ++lines_printed;
1290                                 lines_printed = checkpagin(lines_printed, pagin, height);
1291                         }
1292                         c = strlen(aaa);
1293                         aaa[0] = 0;
1294                 }
1295                 b = strlen(aaa);
1296                 aaa[b] = a;
1297                 aaa[b + 1] = 0;
1298         }
1299         if (a == 32) {
1300                 if ((strlen(aaa) + c) > (width - 1)) {
1301                         c = 1;
1302                         if (fpout) {
1303                                 fprintf(fpout, "\n");
1304                         } else {
1305                                 scr_printf("\n");
1306                                 ++lines_printed;
1307                                 lines_printed = checkpagin(lines_printed, pagin, height);
1308                         }
1309                 }
1310                 if (fpout) {
1311                         fprintf(fpout, "%s ", aaa);
1312                 } else {
1313                         scr_printf("%s ", aaa);
1314                 }
1315                 ++c;
1316                 c = c + strlen(aaa);
1317                 strcpy(aaa, "");
1318                 goto FMTA;
1319         }
1320         if ((a == 13) || (a == 10)) {
1321                 if (fpout) {
1322                         fprintf(fpout, "%s\n", aaa);
1323                 } else {
1324                         scr_printf("%s\n", aaa);
1325                         ++lines_printed;
1326                         lines_printed = checkpagin(lines_printed, pagin, height);
1327                 }
1328                 c = 1;
1329                 if (sigcaught) goto OOPS;
1330                 strcpy(aaa, "");
1331                 goto FMTA;
1332         }
1333         goto FMTA;
1334
1335         /* keypress caught; drain the server */
1336 OOPS:   do {
1337                 serv_gets(aaa);
1338         } while (strcmp(aaa, "000"));
1339
1340 FMTEND:
1341         if (fpout) {
1342                 fprintf(fpout, "\n");
1343         } else {
1344                 scr_printf("\n");
1345                 ++lines_printed;
1346                 lines_printed = checkpagin(lines_printed, pagin, height);
1347         }
1348         return (sigcaught);
1349 }
1350
1351
1352 /*
1353  * support ANSI color if defined
1354  */
1355 void color(int colornum)
1356 {
1357         static int is_bold = 0;
1358         static int hold_color, current_color;
1359
1360         if (colornum == COLOR_PUSH) {
1361                 hold_color = current_color;
1362                 return;
1363         }
1364
1365         if (colornum == COLOR_POP) {
1366                 color(hold_color);
1367                 return;
1368         }
1369
1370         current_color = colornum;
1371         if (enable_color) {
1372 #ifdef HAVE_CURSES_H
1373                 if (scr_color(colornum))
1374                         return;
1375 #endif
1376                 /* When switching to dim white, actually output an 'original
1377                  * pair' sequence -- this looks better on black-on-white
1378                  * terminals.
1379                  */
1380                 if (colornum == DIM_WHITE)
1381                         printf("\033[39;49m");
1382                 else
1383                         printf("\033[3%d;40m", (colornum & 7));
1384
1385                 if ((colornum >= 8) && (is_bold == 0)) {
1386                         printf("\033[1m");
1387                         is_bold = 1;
1388                 } else if ((colornum < 8) && (is_bold == 1)) {
1389                         printf("\033[0m");
1390                         is_bold = 0;
1391                 }
1392                 scr_flush();
1393         }
1394 }
1395
1396 void cls(int colornum)
1397 {
1398         if (enable_color) {
1399                 printf("\033[4%dm\033[2J\033[H\033[0m", colornum);
1400                 scr_flush();
1401         }
1402 }
1403
1404
1405 /*
1406  * Detect whether ANSI color is available (answerback)
1407  */
1408 void send_ansi_detect(void)
1409 {
1410         if (rc_ansi_color == 2) {
1411                 printf("\033[c");
1412                 scr_flush();
1413                 time(&AnsiDetect);
1414         }
1415 }
1416
1417 void look_for_ansi(void)
1418 {
1419         fd_set rfds;
1420         struct timeval tv;
1421         char abuf[512];
1422         time_t now;
1423         int a;
1424
1425         if (rc_ansi_color == 0) {
1426                 enable_color = 0;
1427         } else if (rc_ansi_color == 1) {
1428                 enable_color = 1;
1429         } else if (rc_ansi_color == 2) {
1430
1431                 /* otherwise, do the auto-detect */
1432
1433                 strcpy(abuf, "");
1434
1435                 time(&now);
1436                 if ((now - AnsiDetect) < 2)
1437                         sleep(1);
1438
1439                 do {
1440                         FD_ZERO(&rfds);
1441                         FD_SET(0, &rfds);
1442                         tv.tv_sec = 0;
1443                         tv.tv_usec = 1;
1444
1445                         select(1, &rfds, NULL, NULL, &tv);
1446                         if (FD_ISSET(0, &rfds)) {
1447                                 abuf[strlen(abuf) + 1] = 0;
1448                                 read(0, &abuf[strlen(abuf)], 1);
1449                         }
1450                 } while (FD_ISSET(0, &rfds));
1451
1452                 for (a = 0; a < strlen(abuf); ++a) {
1453                         if ((abuf[a] == 27) && (abuf[a + 1] == '[')
1454                             && (abuf[a + 2] == '?')) {
1455                                 enable_color = 1;
1456                         }
1457                 }
1458         }
1459 }
1460
1461
1462 /*
1463  * Display key options (highlight hotkeys inside angle brackets)
1464  */
1465 void keyopt(char *buf) {
1466         int i;
1467
1468         color(DIM_WHITE);
1469         for (i=0; i<strlen(buf); ++i) {
1470                 if (buf[i]=='<') {
1471                         scr_putc(buf[i]);
1472                         color(BRIGHT_MAGENTA);
1473                 } else {
1474                         if (buf[i]=='>') {
1475                                 color(DIM_WHITE);
1476                         }
1477                         scr_putc(buf[i]);
1478                 }
1479         }
1480         color(DIM_WHITE);
1481 }
1482
1483
1484
1485 /*
1486  * Present a key-menu line choice type of thing
1487  */
1488 char keymenu(char *menuprompt, char *menustring) {
1489         int i, c, a;
1490         int choices;
1491         int do_prompt = 0;
1492         char buf[1024];
1493         int ch;
1494         int display_prompt = 1;
1495
1496         choices = num_tokens(menustring, '|');
1497
1498         if (menuprompt != NULL) do_prompt = 1;
1499         if (menuprompt != NULL) if (strlen(menuprompt)==0) do_prompt = 0;
1500
1501         while (1) {
1502                 if (display_prompt) {
1503                         if (do_prompt) {
1504                                 scr_printf("%s ", menuprompt);
1505                         }
1506                         else {
1507                                 for (i=0; i<choices; ++i) {
1508                                         extract(buf, menustring, i);
1509                                         keyopt(buf);
1510                                         scr_printf(" ");
1511                                 }
1512                         }
1513                         scr_printf(" -> ");
1514                         display_prompt = 0;
1515                 }
1516                 ch = lkey();
1517
1518                 if ( (do_prompt) && (ch=='?') ) {
1519                         scr_printf("\rOne of...                               ");
1520                         scr_printf("                                      \n");
1521                         for (i=0; i<choices; ++i) {
1522                                 extract(buf, menustring, i);
1523                                 scr_printf("   ");
1524                                 keyopt(buf);
1525                                 scr_printf("\n");
1526                         }
1527                         scr_printf("\n");
1528                         display_prompt = 1;
1529                 }
1530
1531                 for (i=0; i<choices; ++i) {
1532                         extract(buf, menustring, i);
1533                         for (c=1; c<strlen(buf); ++c) {
1534                                 if ( (ch == tolower(buf[c]))
1535                                    && (buf[c-1]=='<')
1536                                    && (buf[c+1]=='>') ) {
1537                                         for (a=0; a<strlen(buf); ++a) {
1538                                                 if ( (a!=(c-1)) && (a!=(c+1))) {
1539                                                         scr_putc(buf[a]);
1540                                                 }
1541                                         }
1542                                         scr_printf("\n\n");
1543                                         return ch;
1544                                 }
1545                         }
1546                 }
1547         }
1548 }