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         vsnprintf(buf, sizeof(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         fd_set rfds;
 437         struct timeval tv;
 438         time_t start_time;
 439
 440         scr_flush();
 441         lines_printed = 0;
 442         time(&start_time);
 443
 444         do {
 445                 /* This loop waits for keyboard input.  If the keepalive
 446                  * timer expires, it sends a keepalive to the server if
 447                  * necessary and then waits again.
 448                  */
 449                 do {
 450                         do_keepalive();
 451
 452                         FD_ZERO(&rfds);
 453                         FD_SET(0, &rfds);
 454                         tv.tv_sec = S_KEEPALIVE;
 455                         tv.tv_usec = 0;
 456
 457                         select(1, &rfds, NULL, NULL, &tv);
 458                 } while (!FD_ISSET(0, &rfds));
 459
 460                 /* At this point, there's input, so fetch it.
 461                  * (There's a hole in the bucket...)
 462                  */
 463                 a = scr_getc();
 464                 if (a == 127)
 465                         a = 8;
 466                 if (a > 126)
 467                         a = 0;
 468                 if (a == 13)
 469                         a = 10;
 470                 if (((a != 4) && (a != 10) && (a != 8) && (a != NEXT_KEY) && (a != STOP_KEY))
 471                     && ((a < 32) || (a > 126)))
 472                         a = 0;
 473         } while (a == 0);
 474         return (a);
 475 }
 476
 477
 478 int yesno(void)
 479 {                               /* Returns 1 for yes, 0 for no */
 480         int a;
 481         while (1) {
 482                 a = inkey();
 483                 a = tolower(a);
 484                 if (a == 'y') {
 485                         scr_printf("Yes\n");
 486                         return (1);
 487                 }
 488                 if (a == 'n') {
 489                         scr_printf("No\n");
 490                         return (0);
 491                 }
 492         }
 493 }
 494
 495 /* Returns 1 for yes, 0 for no, arg is default value */
 496 int yesno_d(int d)
 497 {
 498         int a;
 499         while (1) {
 500                 a = inkey();
 501                 a = tolower(a);
 502                 if (a == 10)
 503                         a = (d ? 'y' : 'n');
 504                 if (a == 'y') {
 505                         scr_printf("Yes\n");
 506                         return (1);
 507                 }
 508                 if (a == 'n') {
 509                         scr_printf("No\n");
 510                         return (0);
 511                 }
 512         }
 513 }
 514
 515
 516
 517
 518 /* Gets a line from the terminal */
 519 /* string == Pointer to string buffer */
 520 /* lim == Maximum length - if negative, no-show */
 521 void getline(char *string, int lim)
 522 {
 523         int a, b;
 524         char flag = 0;
 525
 526         if (lim < 0) {
 527                 lim = (0 - lim);
 528                 flag = 1;
 529         }
 530         strcpy(string, "");
 531         gl_string = string;
 532         async_ka_start();
 533       GLA:a = inkey();
 534         a = (a & 127);
 535         if ((a == 8) && (strlen(string) == 0))
 536                 goto GLA;
 537         if ((a != 10) && (a != 8) && (strlen(string) == lim))
 538                 goto GLA;
 539         if ((a == 8) && (string[0] != 0)) {
 540                 string[strlen(string) - 1] = 0;
 541                 scr_putc(8);
 542                 scr_putc(32);
 543                 scr_putc(8);
 544                 goto GLA;
 545         }
 546         if ((a == 10)) {
 547                 scr_putc(10);
 548                 async_ka_end();
 549                 return;
 550         }
 551         if (a < 32)
 552                 a = '.';
 553         b = strlen(string);
 554         string[b] = a;
 555         string[b + 1] = 0;
 556         if (flag == 0)
 557                 scr_putc(a);
 558         if (flag == 1)
 559                 scr_putc('*');
 560         goto GLA;
 561 }
 562
 563
 564 /*
 565  * strprompt()  -  prompt for a string, print the existing value and
 566  *                 allow the user to press return to keep it...
 567  */
 568 void strprompt(char *prompt, char *str, int len)
 569 {
 570         int i;
 571         char buf[128];
 572
 573         print_express();
 574         color(DIM_WHITE);
 575         scr_printf("%s ", prompt);
 576         color(DIM_MAGENTA);
 577         scr_printf("[");
 578         color(BRIGHT_MAGENTA);
 579
 580         if (len >= 0) {
 581                 scr_printf("%s", str);
 582         }
 583         else {
 584                 for (i=0; i<strlen(str); ++i) {
 585                         scr_printf("*");
 586                 }
 587         }
 588
 589         color(DIM_MAGENTA);
 590         scr_printf("]");
 591         color(DIM_WHITE);
 592         scr_printf(": ");
 593         color(BRIGHT_CYAN);
 594         getline(buf, len);
 595         if (buf[0] != 0)
 596                 strcpy(str, buf);
 597         color(DIM_WHITE);
 598 }
 599
 600 /*
 601  * boolprompt()  -  prompt for a yes/no, print the existing value and
 602  *                  allow the user to press return to keep it...
 603  */
 604 int boolprompt(char *prompt, int prev_val)
 605 {
 606         int r;
 607
 608         color(DIM_WHITE);
 609         scr_printf("%s ", prompt);
 610         color(DIM_MAGENTA);
 611         scr_printf(" [");
 612         color(BRIGHT_MAGENTA);
 613         scr_printf("%s", (prev_val ? "Yes" : "No"));
 614         color(DIM_MAGENTA);
 615         scr_printf("]: ");
 616         color(BRIGHT_CYAN);
 617         r = (yesno_d(prev_val));
 618         color(DIM_WHITE);
 619         return r;
 620 }
 621
 622 /*
 623  * intprompt()  -  like strprompt(), except for an integer
 624  *                 (note that it RETURNS the new value!)
 625  */
 626 int intprompt(char *prompt, int ival, int imin, int imax)
 627 {
 628         char buf[16];
 629         int i;
 630         int p;
 631
 632         do {
 633                 i = ival;
 634                 snprintf(buf, sizeof buf, "%d", i);
 635                 strprompt(prompt, buf, 15);
 636                 i = atoi(buf);
 637                 for (p=0; p<strlen(buf); ++p) {
 638                         if ( (!isdigit(buf[p]))
 639                            && ( (buf[p]!='-') || (p!=0) )  )
 640                                 i = imin - 1;
 641                 }
 642                 if (i < imin)
 643                         scr_printf("*** Must be no less than %d.\n", imin);
 644                 if (i > imax)
 645                         scr_printf("*** Must be no more than %d.\n", imax);
 646         } while ((i < imin) || (i > imax));
 647         return (i);
 648 }
 649
 650 /*
 651  * newprompt()  -  prompt for a string with no existing value
 652  *                 (clears out string buffer first)
 653  */
 654 void newprompt(char *prompt, char *str, int len)
 655 {
 656         color(BRIGHT_MAGENTA);
 657         scr_printf("%s", prompt);
 658         color(DIM_MAGENTA);
 659         getline(str, len);
 660         color(DIM_WHITE);
 661 }
 662
 663
 664 int lkey(void)
 665 {                               /* returns a lower case value */
 666         int a;
 667         a = inkey();
 668         if (isupper(a))
 669                 a = tolower(a);
 670         return (a);
 671 }
 672
 673 /*
 674  * parse the citadel.rc file
 675  */
 676 void load_command_set(void)
 677 {
 678         FILE *ccfile;
 679         char buf[1024];
 680         struct citcmd *cptr;
 681         struct citcmd *lastcmd = NULL;
 682         int a, d;
 683         int b = 0;
 684
 685
 686         /* first, set up some defaults for non-required variables */
 687
 688         strcpy(editor_path, "");
 689         strcpy(printcmd, "");
 690         strcpy(rc_username, "");
 691         strcpy(rc_password, "");
 692         rc_floor_mode = 0;
 693         rc_exp_beep = 1;
 694         rc_allow_attachments = 0;
 695         rc_remember_passwords = 0;
 696         strcpy(rc_exp_cmd, "");
 697         rc_display_message_numbers = 0;
 698         rc_force_mail_prompts = 0;
 699         rc_ansi_color = 0;
 700         strcpy(rc_url_cmd, "");
 701         rc_encrypt = RC_DEFAULT;
 702 #ifdef HAVE_CURSES_H
 703         rc_screen = RC_DEFAULT;
 704 #endif
 705         rc_alt_semantics = 0;
 706
 707         /* now try to open the citadel.rc file */
 708
 709         ccfile = NULL;
 710         if (getenv("HOME") != NULL) {
 711                 snprintf(buf, sizeof buf, "%s/.citadelrc", getenv("HOME"));
 712                 ccfile = fopen(buf, "r");
 713         }
 714         if (ccfile == NULL) {
 715                 snprintf(buf, sizeof buf, "%s/citadel.rc", BBSDIR);
 716                 ccfile = fopen(buf, "r");
 717         }
 718         if (ccfile == NULL) {
 719                 ccfile = fopen("/etc/citadel.rc", "r");
 720         }
 721         if (ccfile == NULL) {
 722                 ccfile = fopen("./citadel.rc", "r");
 723         }
 724         if (ccfile == NULL) {
 725                 perror("commands: cannot open citadel.rc");
 726                 logoff(errno);
 727         }
 728         while (fgets(buf, sizeof buf, ccfile) != NULL) {
 729                 while ((strlen(buf) > 0) ? (isspace(buf[strlen(buf) - 1])) : 0)
 730                         buf[strlen(buf) - 1] = 0;
 731
 732                 if (!strncasecmp(buf, "encrypt=", 8)) {
 733                         if (!strcasecmp(&buf[8], "yes"))
 734                                 rc_encrypt = RC_YES;
 735                         else if (!strcasecmp(&buf[8], "no"))
 736                                 rc_encrypt = RC_NO;
 737                         else if (!strcasecmp(&buf[8], "default"))
 738                                 rc_encrypt = RC_DEFAULT;
 739                 }
 740
 741 #ifdef HAVE_CURSES_H
 742                 if (!strncasecmp(buf, "fullscreen=", 11)) {
 743                         if (!strcasecmp(&buf[11], "yes"))
 744                                 rc_screen = RC_YES;
 745                         else if (!strcasecmp(&buf[11], "no"))
 746                                 rc_screen = RC_NO;
 747                 }
 748 #endif
 749
 750                 if (!strncasecmp(buf, "editor=", 7))
 751                         strcpy(editor_path, &buf[7]);
 752
 753                 if (!strncasecmp(buf, "printcmd=", 9))
 754                         strcpy(printcmd, &buf[9]);
 755
 756                 if (!strncasecmp(buf, "expcmd=", 7))
 757                         strcpy(rc_exp_cmd, &buf[7]);
 758
 759                 if (!strncasecmp(buf, "local_screen_dimensions=", 24))
 760                         have_xterm = (char) atoi(&buf[24]);
 761
 762                 if (!strncasecmp(buf, "use_floors=", 11)) {
 763                         if (!strcasecmp(&buf[11], "yes"))
 764                                 rc_floor_mode = RC_YES;
 765                         if (!strcasecmp(&buf[11], "no"))
 766                                 rc_floor_mode = RC_NO;
 767                         if (!strcasecmp(&buf[11], "default"))
 768                                 rc_floor_mode = RC_DEFAULT;
 769                 }
 770                 if (!strncasecmp(buf, "beep=", 5)) {
 771                         rc_exp_beep = atoi(&buf[5]);
 772                 }
 773                 if (!strncasecmp(buf, "allow_attachments=", 18)) {
 774                         rc_allow_attachments = atoi(&buf[18]);
 775                 }
 776                 if (!strncasecmp(buf, "remember_passwords=", 19)) {
 777                         rc_remember_passwords = atoi(&buf[19]);
 778                 }
 779                 if (!strncasecmp(buf, "display_message_numbers=", 24)) {
 780                         rc_display_message_numbers = atoi(&buf[24]);
 781                 }
 782                 if (!strncasecmp(buf, "force_mail_prompts=", 19)) {
 783                         rc_force_mail_prompts = atoi(&buf[19]);
 784                 }
 785                 if (!strncasecmp(buf, "ansi_color=", 11)) {
 786                         if (!strncasecmp(&buf[11], "on", 2))
 787                                 rc_ansi_color = 1;
 788                         if (!strncasecmp(&buf[11], "auto", 4))
 789                                 rc_ansi_color = 2;      /* autodetect */
 790                         if (!strncasecmp(&buf[11], "user", 4))
 791                                 rc_ansi_color = 3;      /* user config */
 792                 }
 793                 if (!strncasecmp(buf, "prompt_control=", 15)) {
 794                         if (!strncasecmp(&buf[15], "on", 2))
 795                                 rc_prompt_control = 1;
 796                         if (!strncasecmp(&buf[15], "user", 4))
 797                                 rc_prompt_control = 3;  /* user config */
 798                 }
 799                 if (!strncasecmp(buf, "username=", 9))
 800                         strcpy(rc_username, &buf[9]);
 801
 802                 if (!strncasecmp(buf, "password=", 9))
 803                         strcpy(rc_password, &buf[9]);
 804
 805                 if (!strncasecmp(buf, "urlcmd=", 7))
 806                         strcpy(rc_url_cmd, &buf[7]);
 807
 808                 if (!strncasecmp(buf, "alternate_semantics=", 20)) {
 809                         if (!strncasecmp(&buf[11], "yes", 3))
 810                                 rc_alt_semantics = 1;
 811                         if (!strncasecmp(&buf[11], "no", 2))
 812                                 rc_alt_semantics = 0;
 813                 }
 814                 if (!strncasecmp(buf, "cmd=", 4)) {
 815                         strcpy(buf, &buf[4]);
 816
 817                         cptr = (struct citcmd *) malloc(sizeof(struct citcmd));
 818
 819                         cptr->c_cmdnum = atoi(buf);
 820                         for (d = strlen(buf); d >= 0; --d)
 821                                 if (buf[d] == ',')
 822                                         b = d;
 823                         strcpy(buf, &buf[b + 1]);
 824
 825                         cptr->c_axlevel = atoi(buf);
 826                         for (d = strlen(buf); d >= 0; --d)
 827                                 if (buf[d] == ',')
 828                                         b = d;
 829                         strcpy(buf, &buf[b + 1]);
 830
 831                         for (a = 0; a < 5; ++a)
 832                                 cptr->c_keys[a][0] = 0;
 833
 834                         a = 0;
 835                         b = 0;
 836                         buf[strlen(buf) + 1] = 0;
 837                         while (strlen(buf) > 0) {
 838                                 b = strlen(buf);
 839                                 for (d = strlen(buf); d >= 0; --d)
 840                                         if (buf[d] == ',')
 841                                                 b = d;
 842                                 strncpy(cptr->c_keys[a], buf, b);
 843                                 cptr->c_keys[a][b] = 0;
 844                                 if (buf[b] == ',')
 845                                         strcpy(buf, &buf[b + 1]);
 846                                 else
 847                                         strcpy(buf, "");
 848                                 ++a;
 849                         }
 850
 851                         cptr->next = NULL;
 852                         if (cmdlist == NULL)
 853                                 cmdlist = cptr;
 854                         else
 855                                 lastcmd->next = cptr;
 856                         lastcmd = cptr;
 857                 }
 858         }
 859         fclose(ccfile);
 860 }
 861
 862
 863
 864 /*
 865  * return the key associated with a command
 866  */
 867 char keycmd(char *cmdstr)
 868 {
 869         int a;
 870
 871         for (a = 0; a < strlen(cmdstr); ++a)
 872                 if (cmdstr[a] == '&')
 873                         return (tolower(cmdstr[a + 1]));
 874         return (0);
 875 }
 876
 877
 878 /*
 879  * Output the string from a key command without the ampersand
 880  * "mode" should be set to 0 for normal or 1 for <C>ommand key highlighting
 881  */
 882 char *cmd_expand(char *strbuf, int mode)
 883 {
 884         int a;
 885         static char exp[64];
 886         char buf[1024];
 887
 888         strcpy(exp, strbuf);
 889
 890         for (a = 0; a < strlen(exp); ++a) {
 891                 if (strbuf[a] == '&') {
 892
 893                         if (mode == 0) {
 894                                 strcpy(&exp[a], &exp[a + 1]);
 895                         }
 896                         if (mode == 1) {
 897                                 exp[a] = '<';
 898                                 strcpy(buf, &exp[a + 2]);
 899                                 exp[a + 2] = '>';
 900                                 exp[a + 3] = 0;
 901                                 strcat(exp, buf);
 902                         }
 903                 }
 904                 if (!strncmp(&exp[a], "^r", 2)) {
 905                         strcpy(buf, exp);
 906                         strcpy(&exp[a], room_name);
 907                         strcat(exp, &buf[a + 2]);
 908                 }
 909                 if (!strncmp(&exp[a], "^c", 2)) {
 910                         exp[a] = ',';
 911                         strcpy(&exp[a + 1], &exp[a + 2]);
 912                 }
 913         }
 914
 915         return (exp);
 916 }
 917
 918
 919
 920 /*
 921  * Comparison function to determine if entered commands match a
 922  * command loaded from the config file.
 923  */
 924 int cmdmatch(char *cmdbuf, struct citcmd *cptr, int ncomp)
 925 {
 926         int a;
 927         int cmdax;
 928
 929         cmdax = 0;
 930         if (is_room_aide)
 931                 cmdax = 1;
 932         if (axlevel >= 6)
 933                 cmdax = 2;
 934
 935         for (a = 0; a < ncomp; ++a) {
 936                 if ((tolower(cmdbuf[a]) != keycmd(cptr->c_keys[a]))
 937                     || (cptr->c_axlevel > cmdax))
 938                         return (0);
 939         }
 940         return (1);
 941 }
 942
 943
 944 /*
 945  * This function returns 1 if a given command requires a string input
 946  */
 947 int requires_string(struct citcmd *cptr, int ncomp)
 948 {
 949         int a;
 950         char buf[64];
 951
 952         strcpy(buf, cptr->c_keys[ncomp - 1]);
 953         for (a = 0; a < strlen(buf); ++a) {
 954                 if (buf[a] == ':')
 955                         return (1);
 956         }
 957         return (0);
 958 }
 959
 960
 961 /*
 962  * Input a command at the main prompt.
 963  * This function returns an integer command number.  If the command prompts
 964  * for a string then it is placed in the supplied buffer.
 965  */
 966 int getcmd(char *argbuf)
 967 {
 968         char cmdbuf[5];
 969         int cmdspaces[5];
 970         int cmdpos;
 971         int ch;
 972         int a;
 973         int got;
 974         int this_lazy_cmd;
 975         struct citcmd *cptr;
 976
 977         /*
 978          * Starting a new command now, so set sigcaught to 0.  This variable
 979          * is set to nonzero (usually NEXT_KEY or STOP_KEY) if a command has
 980          * been interrupted by a keypress.
 981          */
 982         sigcaught = 0;
 983
 984         /* Switch color support on or off if we're in user mode */
 985         if (rc_ansi_color == 3) {
 986                 if (userflags & US_COLOR)
 987                         enable_color = 1;
 988                 else
 989                         enable_color = 0;
 990         }
 991         /* if we're running in idiot mode, display a cute little menu */
 992         IFNEXPERT formout("mainmenu");
 993
 994         print_express();        /* print express messages if there are any */
 995         strcpy(argbuf, "");
 996         cmdpos = 0;
 997         for (a = 0; a < 5; ++a)
 998                 cmdbuf[a] = 0;
 999         /* now the room prompt... */
1000         ok_to_interrupt = 1;
1001         color(BRIGHT_WHITE);
1002         scr_printf("\n%s", room_name);
1003         color(DIM_WHITE);
1004         scr_printf("%c ", room_prompt(room_flags));
1005         scr_flush();
1006
1007         while (1) {
1008                 ch = inkey();
1009                 ok_to_interrupt = 0;
1010
1011                 /* Handle the backspace key, but only if there's something
1012                  * to backspace over...
1013                  */
1014                 if ((ch == 8) && (cmdpos > 0)) {
1015                         back(cmdspaces[cmdpos - 1] + 1);
1016                         cmdbuf[cmdpos] = 0;
1017                         --cmdpos;
1018                 }
1019                 /* Spacebar invokes "lazy traversal" commands */
1020                 if ((ch == 32) && (cmdpos == 0)) {
1021                         this_lazy_cmd = next_lazy_cmd;
1022                         if (this_lazy_cmd == 13)
1023                                 next_lazy_cmd = 5;
1024                         if (this_lazy_cmd == 5)
1025                                 next_lazy_cmd = 13;
1026                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1027                                 if (cptr->c_cmdnum == this_lazy_cmd) {
1028                                         for (a = 0; a < 5; ++a)
1029                                                 if (cptr->c_keys[a][0] != 0)
1030                                                         scr_printf("%s ", cmd_expand(
1031                                                                                         cptr->c_keys[a], 0));
1032                                         scr_printf("\n");
1033                                         return (this_lazy_cmd);
1034                                 }
1035                         }
1036                         scr_printf("\n");
1037                         return (this_lazy_cmd);
1038                 }
1039                 /* Otherwise, process the command */
1040                 cmdbuf[cmdpos] = tolower(ch);
1041
1042                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1043                         if (cmdmatch(cmdbuf, cptr, cmdpos + 1)) {
1044
1045                                 scr_printf("%s", cmd_expand(cptr->c_keys[cmdpos], 0));
1046                                 cmdspaces[cmdpos] = strlen(
1047                                     cmd_expand(cptr->c_keys[cmdpos], 0));
1048                                 if (cmdpos < 4)
1049                                         if ((cptr->c_keys[cmdpos + 1]) != 0)
1050                                                 scr_putc(' ');
1051                                 ++cmdpos;
1052                         }
1053                 }
1054
1055                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1056                         if (cmdmatch(cmdbuf, cptr, 5)) {
1057                                 /* We've found our command. */
1058                                 if (requires_string(cptr, cmdpos)) {
1059                                         getline(argbuf, 32);
1060                                 } else {
1061                                         scr_printf("\n");
1062                                 }
1063
1064                                 /* If this command is one that changes rooms,
1065                                  * then the next lazy-command (space bar)
1066                                  * should be "read new" instead of "goto"
1067                                  */
1068                                 if ((cptr->c_cmdnum == 5)
1069                                     || (cptr->c_cmdnum == 6)
1070                                     || (cptr->c_cmdnum == 47)
1071                                     || (cptr->c_cmdnum == 52)
1072                                     || (cptr->c_cmdnum == 16)
1073                                     || (cptr->c_cmdnum == 20))
1074                                         next_lazy_cmd = 13;
1075
1076                                 return (cptr->c_cmdnum);
1077
1078                         }
1079                 }
1080
1081                 if (ch == '?') {
1082                         pprintf("\rOne of ...                         \n");
1083                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1084                                 if (cmdmatch(cmdbuf, cptr, cmdpos)) {
1085                                         for (a = 0; a < 5; ++a) {
1086                                                 pprintf("%s ", cmd_expand(cptr->c_keys[a], 1));
1087                                         }
1088                                         pprintf("\n");
1089                                 }
1090                         }
1091
1092                         pprintf("\n%s%c ", room_name, room_prompt(room_flags));
1093                         got = 0;
1094                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1095                                 if ((got == 0) && (cmdmatch(cmdbuf, cptr, cmdpos))) {
1096                                         for (a = 0; a < cmdpos; ++a) {
1097                                                 pprintf("%s ",
1098                                                        cmd_expand(cptr->c_keys[a], 0));
1099                                         }
1100                                         got = 1;
1101                                 }
1102                         }
1103                 }
1104         }
1105
1106 }
1107
1108
1109
1110
1111
1112 /*
1113  * set tty modes.  commands are:
1114  *
1115  * 01- set to bbs mode
1116  * 2 - save current settings for later restoral
1117  * 3 - restore saved settings
1118  */
1119 #ifdef HAVE_TERMIOS_H
1120 void sttybbs(int cmd)
1121 {                               /* SysV version of sttybbs() */
1122         struct termios live;
1123         static struct termios saved_settings;
1124         static int last_cmd = 0;
1125
1126         if (cmd == SB_LAST)
1127                 cmd = last_cmd;
1128         else
1129                 last_cmd = cmd;
1130
1131         if ((cmd == 0) || (cmd == 1)) {
1132                 tcgetattr(0, &live);
1133                 live.c_iflag = ISTRIP | IXON | IXANY;
1134                 live.c_oflag = OPOST | ONLCR;
1135                 live.c_lflag = ISIG | NOFLSH;
1136
1137                 live.c_cc[VINTR] = (-1);
1138                 live.c_cc[VQUIT] = (-1);
1139
1140 #ifdef hpux
1141                 live.c_cc[VMIN] = 0;
1142                 live.c_cc[VTIME] = 0;
1143 #endif
1144
1145                 /* do we even need this stuff anymore? */
1146                 /* live.c_line=0; */
1147                 live.c_cc[VERASE] = 8;
1148                 live.c_cc[VKILL] = 24;
1149                 live.c_cc[VEOF] = 1;
1150                 live.c_cc[VEOL] = 255;
1151                 live.c_cc[VEOL2] = 0;
1152                 live.c_cc[VSTART] = 0;
1153                 tcsetattr(0, TCSADRAIN, &live);
1154         }
1155         if (cmd == 2) {
1156                 tcgetattr(0, &saved_settings);
1157         }
1158         if (cmd == 3) {
1159                 tcsetattr(0, TCSADRAIN, &saved_settings);
1160         }
1161 }
1162 #else
1163 void sttybbs(int cmd)
1164 {                               /* BSD version of sttybbs() */
1165         struct sgttyb live;
1166         static struct sgttyb saved_settings;
1167         static int last_cmd = 0;
1168
1169         if (cmd == SB_LAST)
1170                 cmd = last_cmd;
1171         else
1172                 last_cmd = cmd;
1173
1174         if ((cmd == 0) || (cmd == 1)) {
1175                 gtty(0, &live);
1176                 live.sg_flags |= CBREAK;
1177                 live.sg_flags |= CRMOD;
1178                 live.sg_flags |= NL1;
1179                 live.sg_flags &= ~ECHO;
1180                 if (cmd == 1)
1181                         live.sg_flags |= NOFLSH;
1182                 stty(0, &live);
1183         }
1184         if (cmd == 2) {
1185                 gtty(0, &saved_settings);
1186         }
1187         if (cmd == 3) {
1188                 stty(0, &saved_settings);
1189         }
1190 }
1191 #endif
1192
1193
1194 /*
1195  * display_help()  -  help file viewer
1196  */
1197 void display_help(char *name)
1198 {
1199         formout(name);
1200 }
1201
1202
1203 /*
1204  * fmout()  -  Citadel text formatter and paginator
1205  */
1206 int fmout(
1207         int width,      /* screen width to use */
1208         FILE *fpin,     /* file to read from, or NULL to read from server */
1209         FILE *fpout,    /* File to write to, or NULL to write to screen */
1210         char pagin,     /* nonzero if we should use the paginator */
1211         int height,     /* screen height to use */
1212         int starting_lp,/* starting value for lines_printed, -1 for global */
1213         char subst)     /* nonzero if we should use hypertext mode */
1214 {
1215         int a, b, c, d, old;
1216         int real = (-1);
1217         char aaa[140];
1218         char buffer[512];
1219         int eof_flag = 0;
1220
1221         num_urls = 0;   /* Start with a clean slate of embedded URL's */
1222
1223         if (starting_lp >= 0) {
1224                 lines_printed = starting_lp;
1225         }
1226         strcpy(aaa, "");
1227         old = 255;
1228         strcpy(buffer, "");
1229         c = 1;                  /* c is the current pos */
1230
1231 FMTA:   while ((eof_flag == 0) && (strlen(buffer) < 126)) {
1232                 if (fpin != NULL) {     /* read from file */
1233                         if (feof(fpin))
1234                                 eof_flag = 1;
1235                         if (eof_flag == 0) {
1236                                 a = getc(fpin);
1237                                 buffer[strlen(buffer) + 1] = 0;
1238                                 buffer[strlen(buffer)] = a;
1239                         }
1240                 } else {        /* read from server */
1241                         d = strlen(buffer);
1242                         serv_gets(&buffer[d]);
1243                         while ((!isspace(buffer[d])) && (isspace(buffer[strlen(buffer) - 1])))
1244                                 buffer[strlen(buffer) - 1] = 0;
1245                         if (!strcmp(&buffer[d], "000")) {
1246                                 buffer[d] = 0;
1247                                 eof_flag = 1;
1248                                 while (isspace(buffer[strlen(buffer) - 1]))
1249                                         buffer[strlen(buffer) - 1] = 0;
1250                         }
1251                         d = strlen(buffer);
1252                         buffer[d] = 10;
1253                         buffer[d + 1] = 0;
1254                 }
1255         }
1256
1257         if ( (!strncasecmp(buffer, "http://", 7))
1258            || (!strncasecmp(buffer, "ftp://", 6)) ) {
1259                 safestrncpy(urls[num_urls], buffer, (SIZ-1));
1260                 for (a=0; a<strlen(urls[num_urls]); ++a) {
1261                         b = urls[num_urls][a];
1262                         if ( (b==' ') || (b==')') || (b=='>') || (b==10)
1263                            || (b==13) || (b==9) || (b=='\"') )
1264                                 urls[num_urls][a] = 0;
1265                 }
1266                 ++num_urls;
1267         }
1268
1269         buffer[strlen(buffer) + 1] = 0;
1270         a = buffer[0];
1271         strcpy(buffer, &buffer[1]);
1272
1273         old = real;
1274         real = a;
1275         if (a <= 0)
1276                 goto FMTEND;
1277
1278         if (((a == 13) || (a == 10)) && (old != 13) && (old != 10))
1279                 a = 32;
1280         if (((old == 13) || (old == 10)) && (isspace(real))) {
1281                 if (fpout) {
1282                         fprintf(fpout, "\n");
1283                 } else {
1284                         scr_printf("\n");
1285                         ++lines_printed;
1286                         lines_printed = checkpagin(lines_printed, pagin, height);
1287                 }
1288                 c = 1;
1289         }
1290         if (a > 126)
1291                 goto FMTA;
1292
1293         if (a > 32) {
1294                 if (((strlen(aaa) + c) > (width - 1)) && (strlen(aaa) > (width - 1))) {
1295                         if (fpout) {
1296                                 fprintf(fpout, "\n%s", aaa);
1297                         } else {
1298                                 scr_printf("\n%s", aaa);
1299                                 ++lines_printed;
1300                                 lines_printed = checkpagin(lines_printed, pagin, height);
1301                         }
1302                         c = strlen(aaa);
1303                         aaa[0] = 0;
1304                 }
1305                 b = strlen(aaa);
1306                 aaa[b] = a;
1307                 aaa[b + 1] = 0;
1308         }
1309         if (a == 32) {
1310                 if ((strlen(aaa) + c) > (width - 1)) {
1311                         c = 1;
1312                         if (fpout) {
1313                                 fprintf(fpout, "\n");
1314                         } else {
1315                                 scr_printf("\n");
1316                                 ++lines_printed;
1317                                 lines_printed = checkpagin(lines_printed, pagin, height);
1318                         }
1319                 }
1320                 if (fpout) {
1321                         fprintf(fpout, "%s ", aaa);
1322                 } else {
1323                         scr_printf("%s ", aaa);
1324                 }
1325                 ++c;
1326                 c = c + strlen(aaa);
1327                 strcpy(aaa, "");
1328                 goto FMTA;
1329         }
1330         if ((a == 13) || (a == 10)) {
1331                 if (fpout) {
1332                         fprintf(fpout, "%s\n", aaa);
1333                 } else {
1334                         scr_printf("%s\n", aaa);
1335                         ++lines_printed;
1336                         lines_printed = checkpagin(lines_printed, pagin, height);
1337                 }
1338                 c = 1;
1339                 if (sigcaught) goto OOPS;
1340                 strcpy(aaa, "");
1341                 goto FMTA;
1342         }
1343         goto FMTA;
1344
1345         /* keypress caught; drain the server */
1346 OOPS:   do {
1347                 serv_gets(aaa);
1348         } while (strcmp(aaa, "000"));
1349
1350 FMTEND:
1351         if (fpout) {
1352                 fprintf(fpout, "\n");
1353         } else {
1354                 scr_printf("\n");
1355                 ++lines_printed;
1356                 lines_printed = checkpagin(lines_printed, pagin, height);
1357         }
1358         return (sigcaught);
1359 }
1360
1361
1362 /*
1363  * support ANSI color if defined
1364  */
1365 void color(int colornum)
1366 {
1367         static int is_bold = 0;
1368         static int hold_color, current_color;
1369
1370         if (colornum == COLOR_PUSH) {
1371                 hold_color = current_color;
1372                 return;
1373         }
1374
1375         if (colornum == COLOR_POP) {
1376                 color(hold_color);
1377                 return;
1378         }
1379
1380         current_color = colornum;
1381         if (enable_color) {
1382 #ifdef HAVE_CURSES_H
1383                 if (scr_color(colornum))
1384                         return;
1385 #endif
1386                 /* When switching to dim white, actually output an 'original
1387                  * pair' sequence -- this looks better on black-on-white
1388                  * terminals.
1389                  */
1390                 if (colornum == DIM_WHITE)
1391                         printf("\033[39;49m");
1392                 else
1393                         printf("\033[3%d;40m", (colornum & 7));
1394
1395                 if ((colornum >= 8) && (is_bold == 0)) {
1396                         printf("\033[1m");
1397                         is_bold = 1;
1398                 } else if ((colornum < 8) && (is_bold == 1)) {
1399                         printf("\033[0m");
1400                         is_bold = 0;
1401                 }
1402                 scr_flush();
1403         }
1404 }
1405
1406 void cls(int colornum)
1407 {
1408         if (enable_color) {
1409                 printf("\033[4%dm\033[2J\033[H\033[0m", colornum);
1410                 scr_flush();
1411         }
1412 }
1413
1414
1415 /*
1416  * Detect whether ANSI color is available (answerback)
1417  */
1418 void send_ansi_detect(void)
1419 {
1420         if (rc_ansi_color == 2) {
1421                 printf("\033[c");
1422                 scr_flush();
1423                 time(&AnsiDetect);
1424         }
1425 }
1426
1427 void look_for_ansi(void)
1428 {
1429         fd_set rfds;
1430         struct timeval tv;
1431         char abuf[512];
1432         time_t now;
1433         int a;
1434
1435         if (rc_ansi_color == 0) {
1436                 enable_color = 0;
1437         } else if (rc_ansi_color == 1) {
1438                 enable_color = 1;
1439         } else if (rc_ansi_color == 2) {
1440
1441                 /* otherwise, do the auto-detect */
1442
1443                 strcpy(abuf, "");
1444
1445                 time(&now);
1446                 if ((now - AnsiDetect) < 2)
1447                         sleep(1);
1448
1449                 do {
1450                         FD_ZERO(&rfds);
1451                         FD_SET(0, &rfds);
1452                         tv.tv_sec = 0;
1453                         tv.tv_usec = 1;
1454
1455                         select(1, &rfds, NULL, NULL, &tv);
1456                         if (FD_ISSET(0, &rfds)) {
1457                                 abuf[strlen(abuf) + 1] = 0;
1458                                 read(0, &abuf[strlen(abuf)], 1);
1459                         }
1460                 } while (FD_ISSET(0, &rfds));
1461
1462                 for (a = 0; a < strlen(abuf); ++a) {
1463                         if ((abuf[a] == 27) && (abuf[a + 1] == '[')
1464                             && (abuf[a + 2] == '?')) {
1465                                 enable_color = 1;
1466                         }
1467                 }
1468         }
1469 }
1470
1471
1472 /*
1473  * Display key options (highlight hotkeys inside angle brackets)
1474  */
1475 void keyopt(char *buf) {
1476         int i;
1477
1478         color(DIM_WHITE);
1479         for (i=0; i<strlen(buf); ++i) {
1480                 if (buf[i]=='<') {
1481                         scr_putc(buf[i]);
1482                         color(BRIGHT_MAGENTA);
1483                 } else {
1484                         if (buf[i]=='>') {
1485                                 color(DIM_WHITE);
1486                         }
1487                         scr_putc(buf[i]);
1488                 }
1489         }
1490         color(DIM_WHITE);
1491 }
1492
1493
1494
1495 /*
1496  * Present a key-menu line choice type of thing
1497  */
1498 char keymenu(char *menuprompt, char *menustring) {
1499         int i, c, a;
1500         int choices;
1501         int do_prompt = 0;
1502         char buf[1024];
1503         int ch;
1504         int display_prompt = 1;
1505
1506         choices = num_tokens(menustring, '|');
1507
1508         if (menuprompt != NULL) do_prompt = 1;
1509         if (menuprompt != NULL) if (strlen(menuprompt)==0) do_prompt = 0;
1510
1511         while (1) {
1512                 if (display_prompt) {
1513                         if (do_prompt) {
1514                                 scr_printf("%s ", menuprompt);
1515                         }
1516                         else {
1517                                 for (i=0; i<choices; ++i) {
1518                                         extract(buf, menustring, i);
1519                                         keyopt(buf);
1520                                         scr_printf(" ");
1521                                 }
1522                         }
1523                         scr_printf(" -> ");
1524                         display_prompt = 0;
1525                 }
1526                 ch = lkey();
1527
1528                 if ( (do_prompt) && (ch=='?') ) {
1529                         scr_printf("\rOne of...                               ");
1530                         scr_printf("                                      \n");
1531                         for (i=0; i<choices; ++i) {
1532                                 extract(buf, menustring, i);
1533                                 scr_printf("   ");
1534                                 keyopt(buf);
1535                                 scr_printf("\n");
1536                         }
1537                         scr_printf("\n");
1538                         display_prompt = 1;
1539                 }
1540
1541                 for (i=0; i<choices; ++i) {
1542                         extract(buf, menustring, i);
1543                         for (c=1; c<strlen(buf); ++c) {
1544                                 if ( (ch == tolower(buf[c]))
1545                                    && (buf[c-1]=='<')
1546                                    && (buf[c+1]=='>') ) {
1547                                         for (a=0; a<strlen(buf); ++a) {
1548                                                 if ( (a!=(c-1)) && (a!=(c+1))) {
1549                                                         scr_putc(buf[a]);
1550                                                 }
1551                                         }
1552                                         scr_printf("\n\n");
1553                                         return ch;
1554                                 }
1555                         }
1556                 }
1557         }
1558 }