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 #ifdef HAVE_OPENSSL
 702         rc_encrypt = RC_DEFAULT;
 703 #endif
 704 #ifdef HAVE_CURSES_H
 705         rc_screen = RC_DEFAULT;
 706 #endif
 707         rc_alt_semantics = 0;
 708
 709         /* now try to open the citadel.rc file */
 710
 711         ccfile = NULL;
 712         if (getenv("HOME") != NULL) {
 713                 snprintf(buf, sizeof buf, "%s/.citadelrc", getenv("HOME"));
 714                 ccfile = fopen(buf, "r");
 715         }
 716         if (ccfile == NULL) {
 717                 snprintf(buf, sizeof buf, "%s/citadel.rc", BBSDIR);
 718                 ccfile = fopen(buf, "r");
 719         }
 720         if (ccfile == NULL) {
 721                 ccfile = fopen("/etc/citadel.rc", "r");
 722         }
 723         if (ccfile == NULL) {
 724                 ccfile = fopen("./citadel.rc", "r");
 725         }
 726         if (ccfile == NULL) {
 727                 perror("commands: cannot open citadel.rc");
 728                 logoff(errno);
 729         }
 730         while (fgets(buf, sizeof buf, ccfile) != NULL) {
 731                 while ((strlen(buf) > 0) ? (isspace(buf[strlen(buf) - 1])) : 0)
 732                         buf[strlen(buf) - 1] = 0;
 733
 734                 if (!strncasecmp(buf, "encrypt=", 8)) {
 735                         if (!strcasecmp(&buf[8], "yes")) {
 736 #ifdef HAVE_OPENSSL
 737                                 rc_encrypt = RC_YES;
 738 #else
 739                                 fprintf(stderr, "citadel.rc requires encryption support but citadel is not compiled with OpenSSL");
 740                                 logoff(1);
 741 #endif
 742                         }
 743 #ifdef HAVE_OPENSSL
 744                         else if (!strcasecmp(&buf[8], "no")) {
 745                                 rc_encrypt = RC_NO;
 746                         }
 747                         else if (!strcasecmp(&buf[8], "default")) {
 748                                 rc_encrypt = RC_DEFAULT;
 749                         }
 750 #endif
 751                 }
 752
 753 #ifdef HAVE_CURSES_H
 754                 if (!strncasecmp(buf, "fullscreen=", 11)) {
 755                         if (!strcasecmp(&buf[11], "yes"))
 756                                 rc_screen = RC_YES;
 757                         else if (!strcasecmp(&buf[11], "no"))
 758                                 rc_screen = RC_NO;
 759                 }
 760 #endif
 761
 762                 if (!strncasecmp(buf, "editor=", 7))
 763                         strcpy(editor_path, &buf[7]);
 764
 765                 if (!strncasecmp(buf, "printcmd=", 9))
 766                         strcpy(printcmd, &buf[9]);
 767
 768                 if (!strncasecmp(buf, "expcmd=", 7))
 769                         strcpy(rc_exp_cmd, &buf[7]);
 770
 771                 if (!strncasecmp(buf, "local_screen_dimensions=", 24))
 772                         have_xterm = (char) atoi(&buf[24]);
 773
 774                 if (!strncasecmp(buf, "use_floors=", 11)) {
 775                         if (!strcasecmp(&buf[11], "yes"))
 776                                 rc_floor_mode = RC_YES;
 777                         if (!strcasecmp(&buf[11], "no"))
 778                                 rc_floor_mode = RC_NO;
 779                         if (!strcasecmp(&buf[11], "default"))
 780                                 rc_floor_mode = RC_DEFAULT;
 781                 }
 782                 if (!strncasecmp(buf, "beep=", 5)) {
 783                         rc_exp_beep = atoi(&buf[5]);
 784                 }
 785                 if (!strncasecmp(buf, "allow_attachments=", 18)) {
 786                         rc_allow_attachments = atoi(&buf[18]);
 787                 }
 788                 if (!strncasecmp(buf, "remember_passwords=", 19)) {
 789                         rc_remember_passwords = atoi(&buf[19]);
 790                 }
 791                 if (!strncasecmp(buf, "display_message_numbers=", 24)) {
 792                         rc_display_message_numbers = atoi(&buf[24]);
 793                 }
 794                 if (!strncasecmp(buf, "force_mail_prompts=", 19)) {
 795                         rc_force_mail_prompts = atoi(&buf[19]);
 796                 }
 797                 if (!strncasecmp(buf, "ansi_color=", 11)) {
 798                         if (!strncasecmp(&buf[11], "on", 2))
 799                                 rc_ansi_color = 1;
 800                         if (!strncasecmp(&buf[11], "auto", 4))
 801                                 rc_ansi_color = 2;      /* autodetect */
 802                         if (!strncasecmp(&buf[11], "user", 4))
 803                                 rc_ansi_color = 3;      /* user config */
 804                 }
 805                 if (!strncasecmp(buf, "prompt_control=", 15)) {
 806                         if (!strncasecmp(&buf[15], "on", 2))
 807                                 rc_prompt_control = 1;
 808                         if (!strncasecmp(&buf[15], "user", 4))
 809                                 rc_prompt_control = 3;  /* user config */
 810                 }
 811                 if (!strncasecmp(buf, "username=", 9))
 812                         strcpy(rc_username, &buf[9]);
 813
 814                 if (!strncasecmp(buf, "password=", 9))
 815                         strcpy(rc_password, &buf[9]);
 816
 817                 if (!strncasecmp(buf, "urlcmd=", 7))
 818                         strcpy(rc_url_cmd, &buf[7]);
 819
 820                 if (!strncasecmp(buf, "alternate_semantics=", 20)) {
 821                         if (!strncasecmp(&buf[11], "yes", 3))
 822                                 rc_alt_semantics = 1;
 823                         if (!strncasecmp(&buf[11], "no", 2))
 824                                 rc_alt_semantics = 0;
 825                 }
 826                 if (!strncasecmp(buf, "cmd=", 4)) {
 827                         strcpy(buf, &buf[4]);
 828
 829                         cptr = (struct citcmd *) malloc(sizeof(struct citcmd));
 830
 831                         cptr->c_cmdnum = atoi(buf);
 832                         for (d = strlen(buf); d >= 0; --d)
 833                                 if (buf[d] == ',')
 834                                         b = d;
 835                         strcpy(buf, &buf[b + 1]);
 836
 837                         cptr->c_axlevel = atoi(buf);
 838                         for (d = strlen(buf); d >= 0; --d)
 839                                 if (buf[d] == ',')
 840                                         b = d;
 841                         strcpy(buf, &buf[b + 1]);
 842
 843                         for (a = 0; a < 5; ++a)
 844                                 cptr->c_keys[a][0] = 0;
 845
 846                         a = 0;
 847                         b = 0;
 848                         buf[strlen(buf) + 1] = 0;
 849                         while (strlen(buf) > 0) {
 850                                 b = strlen(buf);
 851                                 for (d = strlen(buf); d >= 0; --d)
 852                                         if (buf[d] == ',')
 853                                                 b = d;
 854                                 strncpy(cptr->c_keys[a], buf, b);
 855                                 cptr->c_keys[a][b] = 0;
 856                                 if (buf[b] == ',')
 857                                         strcpy(buf, &buf[b + 1]);
 858                                 else
 859                                         strcpy(buf, "");
 860                                 ++a;
 861                         }
 862
 863                         cptr->next = NULL;
 864                         if (cmdlist == NULL)
 865                                 cmdlist = cptr;
 866                         else
 867                                 lastcmd->next = cptr;
 868                         lastcmd = cptr;
 869                 }
 870         }
 871         fclose(ccfile);
 872 }
 873
 874
 875
 876 /*
 877  * return the key associated with a command
 878  */
 879 char keycmd(char *cmdstr)
 880 {
 881         int a;
 882
 883         for (a = 0; a < strlen(cmdstr); ++a)
 884                 if (cmdstr[a] == '&')
 885                         return (tolower(cmdstr[a + 1]));
 886         return (0);
 887 }
 888
 889
 890 /*
 891  * Output the string from a key command without the ampersand
 892  * "mode" should be set to 0 for normal or 1 for <C>ommand key highlighting
 893  */
 894 char *cmd_expand(char *strbuf, int mode)
 895 {
 896         int a;
 897         static char exp[64];
 898         char buf[1024];
 899
 900         strcpy(exp, strbuf);
 901
 902         for (a = 0; a < strlen(exp); ++a) {
 903                 if (strbuf[a] == '&') {
 904
 905                         if (mode == 0) {
 906                                 strcpy(&exp[a], &exp[a + 1]);
 907                         }
 908                         if (mode == 1) {
 909                                 exp[a] = '<';
 910                                 strcpy(buf, &exp[a + 2]);
 911                                 exp[a + 2] = '>';
 912                                 exp[a + 3] = 0;
 913                                 strcat(exp, buf);
 914                         }
 915                 }
 916                 if (!strncmp(&exp[a], "^r", 2)) {
 917                         strcpy(buf, exp);
 918                         strcpy(&exp[a], room_name);
 919                         strcat(exp, &buf[a + 2]);
 920                 }
 921                 if (!strncmp(&exp[a], "^c", 2)) {
 922                         exp[a] = ',';
 923                         strcpy(&exp[a + 1], &exp[a + 2]);
 924                 }
 925         }
 926
 927         return (exp);
 928 }
 929
 930
 931
 932 /*
 933  * Comparison function to determine if entered commands match a
 934  * command loaded from the config file.
 935  */
 936 int cmdmatch(char *cmdbuf, struct citcmd *cptr, int ncomp)
 937 {
 938         int a;
 939         int cmdax;
 940
 941         cmdax = 0;
 942         if (is_room_aide)
 943                 cmdax = 1;
 944         if (axlevel >= 6)
 945                 cmdax = 2;
 946
 947         for (a = 0; a < ncomp; ++a) {
 948                 if ((tolower(cmdbuf[a]) != keycmd(cptr->c_keys[a]))
 949                     || (cptr->c_axlevel > cmdax))
 950                         return (0);
 951         }
 952         return (1);
 953 }
 954
 955
 956 /*
 957  * This function returns 1 if a given command requires a string input
 958  */
 959 int requires_string(struct citcmd *cptr, int ncomp)
 960 {
 961         int a;
 962         char buf[64];
 963
 964         strcpy(buf, cptr->c_keys[ncomp - 1]);
 965         for (a = 0; a < strlen(buf); ++a) {
 966                 if (buf[a] == ':')
 967                         return (1);
 968         }
 969         return (0);
 970 }
 971
 972
 973 /*
 974  * Input a command at the main prompt.
 975  * This function returns an integer command number.  If the command prompts
 976  * for a string then it is placed in the supplied buffer.
 977  */
 978 int getcmd(char *argbuf)
 979 {
 980         char cmdbuf[5];
 981         int cmdspaces[5];
 982         int cmdpos;
 983         int ch;
 984         int a;
 985         int got;
 986         int this_lazy_cmd;
 987         struct citcmd *cptr;
 988
 989         /*
 990          * Starting a new command now, so set sigcaught to 0.  This variable
 991          * is set to nonzero (usually NEXT_KEY or STOP_KEY) if a command has
 992          * been interrupted by a keypress.
 993          */
 994         sigcaught = 0;
 995
 996         /* Switch color support on or off if we're in user mode */
 997         if (rc_ansi_color == 3) {
 998                 if (userflags & US_COLOR)
 999                         enable_color = 1;
1000                 else
1001                         enable_color = 0;
1002         }
1003         /* if we're running in idiot mode, display a cute little menu */
1004         IFNEXPERT formout("mainmenu");
1005
1006         print_express();        /* print express messages if there are any */
1007         strcpy(argbuf, "");
1008         cmdpos = 0;
1009         for (a = 0; a < 5; ++a)
1010                 cmdbuf[a] = 0;
1011         /* now the room prompt... */
1012         ok_to_interrupt = 1;
1013         color(BRIGHT_WHITE);
1014         scr_printf("\n%s", room_name);
1015         color(DIM_WHITE);
1016         scr_printf("%c ", room_prompt(room_flags));
1017         scr_flush();
1018
1019         while (1) {
1020                 ch = inkey();
1021                 ok_to_interrupt = 0;
1022
1023                 /* Handle the backspace key, but only if there's something
1024                  * to backspace over...
1025                  */
1026                 if ((ch == 8) && (cmdpos > 0)) {
1027                         back(cmdspaces[cmdpos - 1] + 1);
1028                         cmdbuf[cmdpos] = 0;
1029                         --cmdpos;
1030                 }
1031                 /* Spacebar invokes "lazy traversal" commands */
1032                 if ((ch == 32) && (cmdpos == 0)) {
1033                         this_lazy_cmd = next_lazy_cmd;
1034                         if (this_lazy_cmd == 13)
1035                                 next_lazy_cmd = 5;
1036                         if (this_lazy_cmd == 5)
1037                                 next_lazy_cmd = 13;
1038                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1039                                 if (cptr->c_cmdnum == this_lazy_cmd) {
1040                                         for (a = 0; a < 5; ++a)
1041                                                 if (cptr->c_keys[a][0] != 0)
1042                                                         scr_printf("%s ", cmd_expand(
1043                                                                                         cptr->c_keys[a], 0));
1044                                         scr_printf("\n");
1045                                         return (this_lazy_cmd);
1046                                 }
1047                         }
1048                         scr_printf("\n");
1049                         return (this_lazy_cmd);
1050                 }
1051                 /* Otherwise, process the command */
1052                 cmdbuf[cmdpos] = tolower(ch);
1053
1054                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1055                         if (cmdmatch(cmdbuf, cptr, cmdpos + 1)) {
1056
1057                                 scr_printf("%s", cmd_expand(cptr->c_keys[cmdpos], 0));
1058                                 cmdspaces[cmdpos] = strlen(
1059                                     cmd_expand(cptr->c_keys[cmdpos], 0));
1060                                 if (cmdpos < 4)
1061                                         if ((cptr->c_keys[cmdpos + 1]) != 0)
1062                                                 scr_putc(' ');
1063                                 ++cmdpos;
1064                         }
1065                 }
1066
1067                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1068                         if (cmdmatch(cmdbuf, cptr, 5)) {
1069                                 /* We've found our command. */
1070                                 if (requires_string(cptr, cmdpos)) {
1071                                         getline(argbuf, 32);
1072                                 } else {
1073                                         scr_printf("\n");
1074                                 }
1075
1076                                 /* If this command is one that changes rooms,
1077                                  * then the next lazy-command (space bar)
1078                                  * should be "read new" instead of "goto"
1079                                  */
1080                                 if ((cptr->c_cmdnum == 5)
1081                                     || (cptr->c_cmdnum == 6)
1082                                     || (cptr->c_cmdnum == 47)
1083                                     || (cptr->c_cmdnum == 52)
1084                                     || (cptr->c_cmdnum == 16)
1085                                     || (cptr->c_cmdnum == 20))
1086                                         next_lazy_cmd = 13;
1087
1088                                 return (cptr->c_cmdnum);
1089
1090                         }
1091                 }
1092
1093                 if (ch == '?') {
1094                         pprintf("\rOne of ...                         \n");
1095                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1096                                 if (cmdmatch(cmdbuf, cptr, cmdpos)) {
1097                                         for (a = 0; a < 5; ++a) {
1098                                                 pprintf("%s ", cmd_expand(cptr->c_keys[a], 1));
1099                                         }
1100                                         pprintf("\n");
1101                                 }
1102                         }
1103
1104                         pprintf("\n%s%c ", room_name, room_prompt(room_flags));
1105                         got = 0;
1106                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1107                                 if ((got == 0) && (cmdmatch(cmdbuf, cptr, cmdpos))) {
1108                                         for (a = 0; a < cmdpos; ++a) {
1109                                                 pprintf("%s ",
1110                                                        cmd_expand(cptr->c_keys[a], 0));
1111                                         }
1112                                         got = 1;
1113                                 }
1114                         }
1115                 }
1116         }
1117
1118 }
1119
1120
1121
1122
1123
1124 /*
1125  * set tty modes.  commands are:
1126  *
1127  * 01- set to bbs mode
1128  * 2 - save current settings for later restoral
1129  * 3 - restore saved settings
1130  */
1131 #ifdef HAVE_TERMIOS_H
1132 void sttybbs(int cmd)
1133 {                               /* SysV version of sttybbs() */
1134         struct termios live;
1135         static struct termios saved_settings;
1136         static int last_cmd = 0;
1137
1138         if (cmd == SB_LAST)
1139                 cmd = last_cmd;
1140         else
1141                 last_cmd = cmd;
1142
1143         if ((cmd == 0) || (cmd == 1)) {
1144                 tcgetattr(0, &live);
1145                 live.c_iflag = ISTRIP | IXON | IXANY;
1146                 live.c_oflag = OPOST | ONLCR;
1147                 live.c_lflag = ISIG | NOFLSH;
1148
1149                 live.c_cc[VINTR] = (-1);
1150                 live.c_cc[VQUIT] = (-1);
1151
1152 #ifdef hpux
1153                 live.c_cc[VMIN] = 0;
1154                 live.c_cc[VTIME] = 0;
1155 #endif
1156
1157                 /* do we even need this stuff anymore? */
1158                 /* live.c_line=0; */
1159                 live.c_cc[VERASE] = 8;
1160                 live.c_cc[VKILL] = 24;
1161                 live.c_cc[VEOF] = 1;
1162                 live.c_cc[VEOL] = 255;
1163                 live.c_cc[VEOL2] = 0;
1164                 live.c_cc[VSTART] = 0;
1165                 tcsetattr(0, TCSADRAIN, &live);
1166         }
1167         if (cmd == 2) {
1168                 tcgetattr(0, &saved_settings);
1169         }
1170         if (cmd == 3) {
1171                 tcsetattr(0, TCSADRAIN, &saved_settings);
1172         }
1173 }
1174 #else
1175 void sttybbs(int cmd)
1176 {                               /* BSD version of sttybbs() */
1177         struct sgttyb live;
1178         static struct sgttyb saved_settings;
1179         static int last_cmd = 0;
1180
1181         if (cmd == SB_LAST)
1182                 cmd = last_cmd;
1183         else
1184                 last_cmd = cmd;
1185
1186         if ((cmd == 0) || (cmd == 1)) {
1187                 gtty(0, &live);
1188                 live.sg_flags |= CBREAK;
1189                 live.sg_flags |= CRMOD;
1190                 live.sg_flags |= NL1;
1191                 live.sg_flags &= ~ECHO;
1192                 if (cmd == 1)
1193                         live.sg_flags |= NOFLSH;
1194                 stty(0, &live);
1195         }
1196         if (cmd == 2) {
1197                 gtty(0, &saved_settings);
1198         }
1199         if (cmd == 3) {
1200                 stty(0, &saved_settings);
1201         }
1202 }
1203 #endif
1204
1205
1206 /*
1207  * display_help()  -  help file viewer
1208  */
1209 void display_help(char *name)
1210 {
1211         formout(name);
1212 }
1213
1214
1215 /*
1216  * fmout()  -  Citadel text formatter and paginator
1217  */
1218 int fmout(
1219         int width,      /* screen width to use */
1220         FILE *fpin,     /* file to read from, or NULL to read from server */
1221         FILE *fpout,    /* File to write to, or NULL to write to screen */
1222         char pagin,     /* nonzero if we should use the paginator */
1223         int height,     /* screen height to use */
1224         int starting_lp,/* starting value for lines_printed, -1 for global */
1225         char subst)     /* nonzero if we should use hypertext mode */
1226 {
1227         int a, b, c, d, old;
1228         int real = (-1);
1229         char aaa[140];
1230         char buffer[512];
1231         int eof_flag = 0;
1232
1233         num_urls = 0;   /* Start with a clean slate of embedded URL's */
1234
1235         if (starting_lp >= 0) {
1236                 lines_printed = starting_lp;
1237         }
1238         strcpy(aaa, "");
1239         old = 255;
1240         strcpy(buffer, "");
1241         c = 1;                  /* c is the current pos */
1242
1243 FMTA:   while ((eof_flag == 0) && (strlen(buffer) < 126)) {
1244                 if (fpin != NULL) {     /* read from file */
1245                         if (feof(fpin))
1246                                 eof_flag = 1;
1247                         if (eof_flag == 0) {
1248                                 a = getc(fpin);
1249                                 buffer[strlen(buffer) + 1] = 0;
1250                                 buffer[strlen(buffer)] = a;
1251                         }
1252                 } else {        /* read from server */
1253                         d = strlen(buffer);
1254                         serv_gets(&buffer[d]);
1255                         while ((!isspace(buffer[d])) && (isspace(buffer[strlen(buffer) - 1])))
1256                                 buffer[strlen(buffer) - 1] = 0;
1257                         if (!strcmp(&buffer[d], "000")) {
1258                                 buffer[d] = 0;
1259                                 eof_flag = 1;
1260                                 while (isspace(buffer[strlen(buffer) - 1]))
1261                                         buffer[strlen(buffer) - 1] = 0;
1262                         }
1263                         d = strlen(buffer);
1264                         buffer[d] = 10;
1265                         buffer[d + 1] = 0;
1266                 }
1267         }
1268
1269         if ( (!strncasecmp(buffer, "http://", 7))
1270            || (!strncasecmp(buffer, "ftp://", 6)) ) {
1271                 safestrncpy(urls[num_urls], buffer, (SIZ-1));
1272                 for (a=0; a<strlen(urls[num_urls]); ++a) {
1273                         b = urls[num_urls][a];
1274                         if ( (b==' ') || (b==')') || (b=='>') || (b==10)
1275                            || (b==13) || (b==9) || (b=='\"') )
1276                                 urls[num_urls][a] = 0;
1277                 }
1278                 ++num_urls;
1279         }
1280
1281         buffer[strlen(buffer) + 1] = 0;
1282         a = buffer[0];
1283         strcpy(buffer, &buffer[1]);
1284
1285         old = real;
1286         real = a;
1287         if (a <= 0)
1288                 goto FMTEND;
1289
1290         if (((a == 13) || (a == 10)) && (old != 13) && (old != 10))
1291                 a = 32;
1292         if (((old == 13) || (old == 10)) && (isspace(real))) {
1293                 if (fpout) {
1294                         fprintf(fpout, "\n");
1295                 } else {
1296                         scr_printf("\n");
1297                         ++lines_printed;
1298                         lines_printed = checkpagin(lines_printed, pagin, height);
1299                 }
1300                 c = 1;
1301         }
1302         if (a > 126)
1303                 goto FMTA;
1304
1305         if (a > 32) {
1306                 if (((strlen(aaa) + c) > (width - 1)) && (strlen(aaa) > (width - 1))) {
1307                         if (fpout) {
1308                                 fprintf(fpout, "\n%s", aaa);
1309                         } else {
1310                                 scr_printf("\n%s", aaa);
1311                                 ++lines_printed;
1312                                 lines_printed = checkpagin(lines_printed, pagin, height);
1313                         }
1314                         c = strlen(aaa);
1315                         aaa[0] = 0;
1316                 }
1317                 b = strlen(aaa);
1318                 aaa[b] = a;
1319                 aaa[b + 1] = 0;
1320         }
1321         if (a == 32) {
1322                 if ((strlen(aaa) + c) > (width - 1)) {
1323                         c = 1;
1324                         if (fpout) {
1325                                 fprintf(fpout, "\n");
1326                         } else {
1327                                 scr_printf("\n");
1328                                 ++lines_printed;
1329                                 lines_printed = checkpagin(lines_printed, pagin, height);
1330                         }
1331                 }
1332                 if (fpout) {
1333                         fprintf(fpout, "%s ", aaa);
1334                 } else {
1335                         scr_printf("%s ", aaa);
1336                 }
1337                 ++c;
1338                 c = c + strlen(aaa);
1339                 strcpy(aaa, "");
1340                 goto FMTA;
1341         }
1342         if ((a == 13) || (a == 10)) {
1343                 if (fpout) {
1344                         fprintf(fpout, "%s\n", aaa);
1345                 } else {
1346                         scr_printf("%s\n", aaa);
1347                         ++lines_printed;
1348                         lines_printed = checkpagin(lines_printed, pagin, height);
1349                 }
1350                 c = 1;
1351                 if (sigcaught) goto OOPS;
1352                 strcpy(aaa, "");
1353                 goto FMTA;
1354         }
1355         goto FMTA;
1356
1357         /* keypress caught; drain the server */
1358 OOPS:   do {
1359                 serv_gets(aaa);
1360         } while (strcmp(aaa, "000"));
1361
1362 FMTEND:
1363         if (fpout) {
1364                 fprintf(fpout, "\n");
1365         } else {
1366                 scr_printf("\n");
1367                 ++lines_printed;
1368                 lines_printed = checkpagin(lines_printed, pagin, height);
1369         }
1370         return (sigcaught);
1371 }
1372
1373
1374 /*
1375  * support ANSI color if defined
1376  */
1377 void color(int colornum)
1378 {
1379         static int is_bold = 0;
1380         static int hold_color, current_color;
1381
1382         if (colornum == COLOR_PUSH) {
1383                 hold_color = current_color;
1384                 return;
1385         }
1386
1387         if (colornum == COLOR_POP) {
1388                 color(hold_color);
1389                 return;
1390         }
1391
1392         current_color = colornum;
1393         if (enable_color) {
1394 #ifdef HAVE_CURSES_H
1395                 if (scr_color(colornum))
1396                         return;
1397 #endif
1398                 /* When switching to dim white, actually output an 'original
1399                  * pair' sequence -- this looks better on black-on-white
1400                  * terminals.
1401                  */
1402                 if (colornum == DIM_WHITE)
1403                         printf("\033[39;49m");
1404                 else
1405                         printf("\033[3%d;40m", (colornum & 7));
1406
1407                 if ((colornum >= 8) && (is_bold == 0)) {
1408                         printf("\033[1m");
1409                         is_bold = 1;
1410                 } else if ((colornum < 8) && (is_bold == 1)) {
1411                         printf("\033[0m");
1412                         is_bold = 0;
1413                 }
1414                 scr_flush();
1415         }
1416 }
1417
1418 void cls(int colornum)
1419 {
1420         if (enable_color) {
1421                 printf("\033[4%dm\033[2J\033[H\033[0m", colornum);
1422                 scr_flush();
1423         }
1424 }
1425
1426
1427 /*
1428  * Detect whether ANSI color is available (answerback)
1429  */
1430 void send_ansi_detect(void)
1431 {
1432         if (rc_ansi_color == 2) {
1433                 printf("\033[c");
1434                 scr_flush();
1435                 time(&AnsiDetect);
1436         }
1437 }
1438
1439 void look_for_ansi(void)
1440 {
1441         fd_set rfds;
1442         struct timeval tv;
1443         char abuf[512];
1444         time_t now;
1445         int a;
1446
1447         if (rc_ansi_color == 0) {
1448                 enable_color = 0;
1449         } else if (rc_ansi_color == 1) {
1450                 enable_color = 1;
1451         } else if (rc_ansi_color == 2) {
1452
1453                 /* otherwise, do the auto-detect */
1454
1455                 strcpy(abuf, "");
1456
1457                 time(&now);
1458                 if ((now - AnsiDetect) < 2)
1459                         sleep(1);
1460
1461                 do {
1462                         FD_ZERO(&rfds);
1463                         FD_SET(0, &rfds);
1464                         tv.tv_sec = 0;
1465                         tv.tv_usec = 1;
1466
1467                         select(1, &rfds, NULL, NULL, &tv);
1468                         if (FD_ISSET(0, &rfds)) {
1469                                 abuf[strlen(abuf) + 1] = 0;
1470                                 read(0, &abuf[strlen(abuf)], 1);
1471                         }
1472                 } while (FD_ISSET(0, &rfds));
1473
1474                 for (a = 0; a < strlen(abuf); ++a) {
1475                         if ((abuf[a] == 27) && (abuf[a + 1] == '[')
1476                             && (abuf[a + 2] == '?')) {
1477                                 enable_color = 1;
1478                         }
1479                 }
1480         }
1481 }
1482
1483
1484 /*
1485  * Display key options (highlight hotkeys inside angle brackets)
1486  */
1487 void keyopt(char *buf) {
1488         int i;
1489
1490         color(DIM_WHITE);
1491         for (i=0; i<strlen(buf); ++i) {
1492                 if (buf[i]=='<') {
1493                         scr_putc(buf[i]);
1494                         color(BRIGHT_MAGENTA);
1495                 } else {
1496                         if (buf[i]=='>') {
1497                                 color(DIM_WHITE);
1498                         }
1499                         scr_putc(buf[i]);
1500                 }
1501         }
1502         color(DIM_WHITE);
1503 }
1504
1505
1506
1507 /*
1508  * Present a key-menu line choice type of thing
1509  */
1510 char keymenu(char *menuprompt, char *menustring) {
1511         int i, c, a;
1512         int choices;
1513         int do_prompt = 0;
1514         char buf[1024];
1515         int ch;
1516         int display_prompt = 1;
1517
1518         choices = num_tokens(menustring, '|');
1519
1520         if (menuprompt != NULL) do_prompt = 1;
1521         if (menuprompt != NULL) if (strlen(menuprompt)==0) do_prompt = 0;
1522
1523         while (1) {
1524                 if (display_prompt) {
1525                         if (do_prompt) {
1526                                 scr_printf("%s ", menuprompt);
1527                         }
1528                         else {
1529                                 for (i=0; i<choices; ++i) {
1530                                         extract(buf, menustring, i);
1531                                         keyopt(buf);
1532                                         scr_printf(" ");
1533                                 }
1534                         }
1535                         scr_printf(" -> ");
1536                         display_prompt = 0;
1537                 }
1538                 ch = lkey();
1539
1540                 if ( (do_prompt) && (ch=='?') ) {
1541                         scr_printf("\rOne of...                               ");
1542                         scr_printf("                                      \n");
1543                         for (i=0; i<choices; ++i) {
1544                                 extract(buf, menustring, i);
1545                                 scr_printf("   ");
1546                                 keyopt(buf);
1547                                 scr_printf("\n");
1548                         }
1549                         scr_printf("\n");
1550                         display_prompt = 1;
1551                 }
1552
1553                 for (i=0; i<choices; ++i) {
1554                         extract(buf, menustring, i);
1555                         for (c=1; c<strlen(buf); ++c) {
1556                                 if ( (ch == tolower(buf[c]))
1557                                    && (buf[c-1]=='<')
1558                                    && (buf[c+1]=='>') ) {
1559                                         for (a=0; a<strlen(buf); ++a) {
1560                                                 if ( (a!=(c-1)) && (a!=(c+1))) {
1561                                                         scr_putc(buf[a]);
1562                                                 }
1563                                         }
1564                                         scr_printf("\n\n");
1565                                         return ch;
1566                                 }
1567                         }
1568                 }
1569         }
1570 }