citadel/textclient/commands.c

   1 /*
   2  * This file contains functions which implement parts of the
   3  * text-mode user interface.
   4  *
   5  * Copyright (c) 1987-2012 by the citadel.org team
   6  *
   7  * This program is open source software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 3.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include "sysdep.h"
  17 #include <stdlib.h>
  18 #include <unistd.h>
  19 #include <stdio.h>
  20 #include <fcntl.h>
  21 #include <ctype.h>
  22 #include <string.h>
  23 #include <sys/types.h>
  24
  25 #if TIME_WITH_SYS_TIME
  26 # include <sys/time.h>
  27 # include <time.h>
  28 #else
  29 # if HAVE_SYS_TIME_H
  30 #  include <sys/time.h>
  31 # else
  32 #  include <time.h>
  33 # endif
  34 #endif
  35
  36 #ifdef HAVE_TERMIOS_H
  37 #include <termios.h>
  38 #else
  39 #include <sgtty.h>
  40 #endif
  41
  42 #ifdef HAVE_SYS_SELECT_H
  43 #include <sys/select.h>
  44 #endif
  45
  46 #ifdef THREADED_CLIENT
  47 #include <pthread.h>
  48 #endif
  49
  50 #include <signal.h>
  51 #include <errno.h>
  52 #include <stdarg.h>
  53 #include <libcitadel.h>
  54 #include "citadel.h"
  55 #include "citadel_ipc.h"
  56 #include "commands.h"
  57 #include "messages.h"
  58 #include "citadel_decls.h"
  59 #include "routines.h"
  60 #include "routines2.h"
  61 #include "rooms.h"
  62 #include "client_chat.h"
  63 #include "citadel_dirs.h"
  64 #ifndef HAVE_SNPRINTF
  65 #include "snprintf.h"
  66 #endif
  67 #include "screen.h"
  68 #include "ecrash.h"
  69
  70 struct citcmd {
  71         struct citcmd *next;
  72         int c_cmdnum;
  73         int c_axlevel;
  74         char c_keys[5][64];
  75 };
  76
  77 #define IFNEXPERT if ((userflags&US_EXPERT)==0)
  78
  79
  80 int rc_exp_beep;
  81 char rc_exp_cmd[1024];
  82 int rc_allow_attachments;
  83 int rc_display_message_numbers;
  84 int rc_force_mail_prompts;
  85 int rc_remember_passwords;
  86 int rc_ansi_color;
  87 int rc_color_use_bg;
  88 int rc_prompt_control = 0;
  89 time_t rc_idle_threshold = (time_t)900;
  90 char rc_url_cmd[SIZ];
  91 char rc_open_cmd[SIZ];
  92 char rc_gotmail_cmd[SIZ];
  93
  94 char *gl_string;
  95 int next_lazy_cmd = 5;
  96
  97 extern int screenwidth, screenheight;
  98 extern int termn8;
  99 extern CtdlIPC *ipc_for_signal_handlers;        /* KLUDGE cover your eyes */
 100
 101 struct citcmd *cmdlist = NULL;
 102
 103
 104 /* these variables are local to this module */
 105 char keepalives_enabled = KA_YES;       /* send NOOPs to server when idle */
 106 int ok_to_interrupt = 0;                /* print instant msgs asynchronously */
 107 time_t AnsiDetect;                      /* when did we send the detect code? */
 108 int enable_color = 0;                   /* nonzero for ANSI color */
 109
 110
 111
 112
 113 /*
 114  * If an interesting key has been pressed, return its value, otherwise 0
 115  */
 116 char was_a_key_pressed(void) {
 117         fd_set rfds;
 118         struct timeval tv;
 119         int the_character;
 120         int retval;
 121
 122         FD_ZERO(&rfds);
 123         FD_SET(0, &rfds);
 124         tv.tv_sec = 0;
 125         tv.tv_usec = 0;
 126         retval = select(1, &rfds, NULL, NULL, &tv);
 127
 128         /* Careful!  Disable keepalives during keyboard polling; we're probably
 129          * in the middle of a data transfer from the server, in which case
 130          * sending a NOOP would throw the client protocol out of sync.
 131          */
 132         if ((retval > 0) && FD_ISSET(0, &rfds)) {
 133                 set_keepalives(KA_NO);
 134                 the_character = inkey();
 135                 set_keepalives(KA_YES);
 136         }
 137         else {
 138                 the_character = 0;
 139         }
 140         return(the_character);
 141 }
 142
 143
 144
 145
 146
 147 /*
 148  * print_instant()  -  print instant messages if there are any
 149  */
 150 void print_instant(void)
 151 {
 152         char buf[1024];
 153         FILE *outpipe;
 154         time_t timestamp;
 155         struct tm stamp;
 156         int flags = 0;
 157         char sender[64];
 158         char node[64];
 159         char *listing = NULL;
 160         int r;                  /* IPC result code */
 161
 162         if (instant_msgs == 0)
 163                 return;
 164
 165         if (rc_exp_beep) {
 166                 ctdl_beep();
 167         }
 168         if (IsEmptyStr(rc_exp_cmd)) {
 169                 color(BRIGHT_RED);
 170                 scr_printf("\r---");
 171         }
 172
 173         while (instant_msgs != 0) {
 174                 r = CtdlIPCGetInstantMessage(ipc_for_signal_handlers, &listing, buf);
 175                 if (r / 100 != 1)
 176                         return;
 177
 178                 instant_msgs = extract_int(buf, 0);
 179                 timestamp = extract_long(buf, 1);
 180                 flags = extract_int(buf, 2);
 181                 extract_token(sender, buf, 3, '|', sizeof sender);
 182                 extract_token(node, buf, 4, '|', sizeof node);
 183                 strcpy(last_paged, sender);
 184
 185                 localtime_r(&timestamp, &stamp);
 186
 187                 /* If the page is a Logoff Request, honor it. */
 188                 if (flags & 2) {
 189                         termn8 = 1;
 190                         return;
 191                 }
 192
 193                 if (!IsEmptyStr(rc_exp_cmd)) {
 194                         outpipe = popen(rc_exp_cmd, "w");
 195                         if (outpipe != NULL) {
 196                                 /* Header derived from flags */
 197                                 if (flags & 2)
 198                                         fprintf(outpipe,
 199                                                "Please log off now, as requested ");
 200                                 else if (flags & 1)
 201                                         fprintf(outpipe, "Broadcast message ");
 202                                 else if (flags & 4)
 203                                         fprintf(outpipe, "Chat request ");
 204                                 else
 205                                         fprintf(outpipe, "Message ");
 206                                 /* Timestamp.  Can this be improved? */
 207                                 if (stamp.tm_hour == 0 || stamp.tm_hour == 12)
 208                                         fprintf(outpipe, "at 12:%02d%cm",
 209                                                 stamp.tm_min,
 210                                                 stamp.tm_hour ? 'p' : 'a');
 211                                 else if (stamp.tm_hour > 12)            /* pm */
 212                                         fprintf(outpipe, "at %d:%02dpm",
 213                                                 stamp.tm_hour - 12,
 214                                                 stamp.tm_min);
 215                                 else                                    /* am */
 216                                         fprintf(outpipe, "at %d:%02dam",
 217                                                 stamp.tm_hour, stamp.tm_min);
 218                                 fprintf(outpipe, " from %s", sender);
 219                                 if (strncmp(ipc_for_signal_handlers->ServInfo.nodename, node, 32))
 220                                         fprintf(outpipe, " @%s", node);
 221                                 fprintf(outpipe, ":\n%s\n", listing);
 222                                 pclose(outpipe);
 223                                 if (instant_msgs == 0)
 224                                         return;
 225                                 continue;
 226                         }
 227                 }
 228                 /* fall back to built-in instant message display */
 229                 scr_printf("\n");
 230
 231                 /* Header derived from flags */
 232                 if (flags & 2)
 233                         scr_printf("Please log off now, as requested ");
 234                 else if (flags & 1)
 235                         scr_printf("Broadcast message ");
 236                 else if (flags & 4)
 237                         scr_printf("Chat request ");
 238                 else
 239                         scr_printf("Message ");
 240
 241                 /* Timestamp.  Can this be improved? */
 242                 if (stamp.tm_hour == 0 || stamp.tm_hour == 12)/* 12am/12pm */
 243                         scr_printf("at 12:%02d%cm", stamp.tm_min,
 244                                 stamp.tm_hour ? 'p' : 'a');
 245                 else if (stamp.tm_hour > 12)                    /* pm */
 246                         scr_printf("at %d:%02dpm",
 247                                 stamp.tm_hour - 12, stamp.tm_min);
 248                 else                                            /* am */
 249                         scr_printf("at %d:%02dam", stamp.tm_hour, stamp.tm_min);
 250
 251                 /* Sender */
 252                 scr_printf(" from %s", sender);
 253
 254                 /* Remote node, if any */
 255                 if (strncmp(ipc_for_signal_handlers->ServInfo.nodename, node, 32))
 256                         scr_printf(" @%s", node);
 257
 258                 scr_printf(":\n");
 259                 fmout(screenwidth, NULL, listing, NULL, 0);
 260                 free(listing);
 261
 262         }
 263         scr_printf("\n---\n");
 264         color(BRIGHT_WHITE);
 265
 266
 267 }
 268
 269
 270 void set_keepalives(int s)
 271 {
 272         keepalives_enabled = (char) s;
 273 }
 274
 275 /*
 276  * This loop handles the "keepalive" messages sent to the server when idling.
 277  */
 278
 279 static time_t idlet = 0;
 280 static void really_do_keepalive(void) {
 281
 282         time(&idlet);
 283
 284         /* This may sometimes get called before we are actually connected
 285          * to the server.  Don't do anything if we aren't connected. -IO
 286          */
 287         if (!ipc_for_signal_handlers)
 288                 return;
 289
 290         /* If full keepalives are enabled, send a NOOP to the server and
 291          * wait for a response.
 292          */
 293         if (keepalives_enabled == KA_YES) {
 294                 CtdlIPCNoop(ipc_for_signal_handlers);
 295                 if (instant_msgs > 0) {
 296                         if (ok_to_interrupt == 1) {
 297                                 scr_printf("\r%64s\r", "");
 298                                 print_instant();
 299                                 scr_printf("%s%c ", room_name,
 300                                        room_prompt(room_flags));
 301                                 scr_flush();
 302                         }
 303                 }
 304         }
 305
 306         /* If half keepalives are enabled, send a QNOP to the server (if the
 307          * server supports it) and then do nothing.
 308          */
 309         if ( (keepalives_enabled == KA_HALF)
 310            && (ipc_for_signal_handlers->ServInfo.supports_qnop > 0) ) {
 311                 CtdlIPC_chat_send(ipc_for_signal_handlers, "QNOP");
 312         }
 313 }
 314
 315 /* threaded nonblocking keepalive stuff starts here. I'm going for a simple
 316    encapsulated interface; in theory there should be no need to touch these
 317    globals outside of the async_ka_* functions. */
 318
 319 #ifdef THREADED_CLIENT
 320 static pthread_t ka_thr_handle;
 321 static int ka_thr_active = 0;
 322 static int async_ka_enabled = 0;
 323
 324 static void *ka_thread(void *arg)
 325 {
 326 #ifdef HAVE_BACKTRACE
 327         char threadName[256];
 328
 329         // Set up our name
 330         sprintf(threadName, "ka_Thread n");
 331
 332         // Register for tracing
 333         eCrash_RegisterThread(threadName, 0);
 334 #endif
 335         really_do_keepalive();
 336         pthread_detach(ka_thr_handle);
 337         ka_thr_active = 0;
 338
 339 #ifdef HAVE_BACKTRACE
 340         eCrash_UnregisterThread();
 341 #endif
 342         return NULL;
 343 }
 344
 345 /* start up a thread to handle a keepalive in the background */
 346 static void async_ka_exec(void)
 347 {
 348         if (!ka_thr_active) {
 349                 ka_thr_active = 1;
 350                 if (pthread_create(&ka_thr_handle, NULL, ka_thread, NULL)) {
 351                         perror("pthread_create");
 352                         exit(1);
 353                 }
 354         }
 355 }
 356 #endif /* THREADED_CLIENT */
 357
 358 /* I changed this from static to not because I need to call it from
 359    screen.c, either that or make something in screen.c not static.
 360    Fix it how you like. Why all the staticness? stu */
 361
 362 void do_keepalive(void)
 363 {
 364         time_t now;
 365
 366         time(&now);
 367         if ((now - idlet) < ((long) S_KEEPALIVE))
 368                 return;
 369
 370         /* Do a space-backspace to keep telnet sessions from idling out */
 371         scr_printf(" %c", 8);
 372         scr_flush();
 373
 374 #ifdef THREADED_CLIENT
 375         if (async_ka_enabled)
 376                 async_ka_exec();
 377         else
 378 #endif
 379                 really_do_keepalive();
 380 }
 381
 382
 383 /* Now the actual async-keepalve API that we expose to higher levels:
 384    async_ka_start() and async_ka_end(). These do nothing when we don't have
 385    threading enabled, so we avoid sprinkling ifdef's throughout the code. */
 386
 387 /* wait for a background keepalive to complete. this must be done before
 388    attempting any further server requests! */
 389 void async_ka_end(void)
 390 {
 391 #ifdef THREADED_CLIENT
 392         if (ka_thr_active)
 393                 pthread_join(ka_thr_handle, NULL);
 394
 395         async_ka_enabled--;
 396 #endif
 397 }
 398
 399 /* tell do_keepalive() that keepalives are asynchronous. */
 400 void async_ka_start(void)
 401 {
 402 #ifdef THREADED_CLIENT
 403         async_ka_enabled++;
 404 #endif
 405 }
 406
 407
 408 int inkey(void)
 409 {                               /* get a character from the keyboard, with   */
 410         int a;                  /* the watchdog timer in effect if necessary */
 411         fd_set rfds;
 412         struct timeval tv;
 413         time_t start_time;
 414
 415         scr_flush();
 416         time(&start_time);
 417
 418         do {
 419                 /* This loop waits for keyboard input.  If the keepalive
 420                  * timer expires, it sends a keepalive to the server if
 421                  * necessary and then waits again.
 422                  */
 423                 do {
 424                         do_keepalive();
 425
 426                         FD_ZERO(&rfds);
 427                         FD_SET(0, &rfds);
 428                         tv.tv_sec = S_KEEPALIVE;
 429                         tv.tv_usec = 0;
 430
 431                         select(1, &rfds, NULL, NULL, &tv);
 432                 } while (!FD_ISSET(0, &rfds));
 433
 434                 /* At this point, there's input, so fetch it.
 435                  * (There's a hole in the bucket...)
 436                  */
 437                 a = scr_getc(SCR_BLOCK);
 438                 if (a == 127) {
 439                         a = 8;
 440                 }
 441                 if (a == 13) {
 442                         a = 10;
 443                 }
 444         } while (a == 0);
 445         return (a);
 446 }
 447
 448
 449 int yesno(void)
 450 {                               /* Returns 1 for yes, 0 for no */
 451         int a;
 452         while (1) {
 453                 a = inkey();
 454                 a = tolower(a);
 455                 if (a == 'y') {
 456                         scr_printf("Yes\n");
 457                         return (1);
 458                 }
 459                 if (a == 'n') {
 460                         scr_printf("No\n");
 461                         return (0);
 462                 }
 463         }
 464 }
 465
 466 /* Returns 1 for yes, 0 for no, arg is default value */
 467 int yesno_d(int d)
 468 {
 469         int a;
 470         while (1) {
 471                 a = inkey();
 472                 a = tolower(a);
 473                 if (a == 10)
 474                         a = (d ? 'y' : 'n');
 475                 if (a == 'y') {
 476                         scr_printf("Yes\n");
 477                         return (1);
 478                 }
 479                 if (a == 'n') {
 480                         scr_printf("No\n");
 481                         return (0);
 482                 }
 483         }
 484 }
 485
 486
 487
 488
 489 /* Gets a line from the terminal */
 490 /* string == Pointer to string buffer */
 491 /* lim == Maximum length - if negative, no-show */
 492 void ctdl_getline(char *string, int lim)
 493 {
 494         int a, b;
 495         char flag = 0;
 496
 497         if (lim < 0) {
 498                 lim = (0 - lim);
 499                 flag = 1;
 500         }
 501         strcpy(string, "");
 502         gl_string = string;
 503         async_ka_start();
 504
 505 GLA:    a = inkey();
 506         /* a = (a & 127); ** commented out because it isn't just an ASCII world anymore */
 507         if ((a == 8 || a == 23) && (IsEmptyStr(string)))
 508                 goto GLA;
 509         if ((a != 10) && (a != 8) && (strlen(string) == lim))
 510                 goto GLA;
 511         if ((a == 8) && (string[0] != 0)) {
 512                 string[strlen(string) - 1] = 0;
 513                 scr_putc(8); scr_putc(32); scr_putc(8);
 514                 goto GLA;
 515         }
 516         if ((a == 23) && (string[0] != 0)) {
 517                 do {
 518                         string[strlen(string) - 1] = 0;
 519                         scr_putc(8); scr_putc(32); scr_putc(8);
 520                 } while (!IsEmptyStr(string) && string[strlen(string) - 1] != ' ');
 521                 goto GLA;
 522         }
 523         if ((a == 10)) {
 524                 scr_putc(10);
 525                 async_ka_end();
 526                 return;
 527         }
 528         if (a < 32)
 529                 a = '.';
 530         b = strlen(string);
 531         string[b] = a;
 532         string[b + 1] = 0;
 533         if (flag == 0)
 534                 scr_putc(a);
 535         if (flag == 1)
 536                 scr_putc('*');
 537         goto GLA;
 538 }
 539
 540
 541 /*
 542  * strprompt()  -  prompt for a string, print the existing value and
 543  *                 allow the user to press return to keep it...
 544  */
 545 void strprompt(char *prompt, char *str, int len)
 546 {
 547         int i;
 548         char buf[128];
 549
 550         print_instant();
 551         color(DIM_WHITE);
 552         scr_printf("%s ", prompt);
 553         color(DIM_MAGENTA);
 554         scr_printf("[");
 555         color(BRIGHT_MAGENTA);
 556
 557         if (len >= 0) {
 558                 scr_printf("%s", str);
 559         }
 560         else {
 561                 for (i=0; !IsEmptyStr(&str[i]); ++i) {
 562                         scr_printf("*");
 563                 }
 564         }
 565
 566         color(DIM_MAGENTA);
 567         scr_printf("]");
 568         color(DIM_WHITE);
 569         scr_printf(": ");
 570         color(BRIGHT_CYAN);
 571         ctdl_getline(buf, len);
 572         if (buf[0] != 0)
 573                 strcpy(str, buf);
 574         color(DIM_WHITE);
 575 }
 576
 577 /*
 578  * boolprompt()  -  prompt for a yes/no, print the existing value and
 579  *                  allow the user to press return to keep it...
 580  */
 581 int boolprompt(char *prompt, int prev_val)
 582 {
 583         int r;
 584
 585         color(DIM_WHITE);
 586         scr_printf("%s ", prompt);
 587         color(DIM_MAGENTA);
 588         scr_printf("[");
 589         color(BRIGHT_MAGENTA);
 590         scr_printf("%s", (prev_val ? "Yes" : "No"));
 591         color(DIM_MAGENTA);
 592         scr_printf("]: ");
 593         color(BRIGHT_CYAN);
 594         r = (yesno_d(prev_val));
 595         color(DIM_WHITE);
 596         return r;
 597 }
 598
 599 /*
 600  * intprompt()  -  like strprompt(), except for an integer
 601  *                 (note that it RETURNS the new value!)
 602  */
 603 int intprompt(char *prompt, int ival, int imin, int imax)
 604 {
 605         char buf[16];
 606         int i;
 607         int p;
 608
 609         do {
 610                 i = ival;
 611                 snprintf(buf, sizeof buf, "%d", i);
 612                 strprompt(prompt, buf, 15);
 613                 i = atoi(buf);
 614                 for (p=0; !IsEmptyStr(&buf[p]); ++p) {
 615                         if ( (!isdigit(buf[p]))
 616                            && ( (buf[p]!='-') || (p!=0) )  )
 617                                 i = imin - 1;
 618                 }
 619                 if (i < imin)
 620                         scr_printf("*** Must be no less than %d.\n", imin);
 621                 if (i > imax)
 622                         scr_printf("*** Must be no more than %d.\n", imax);
 623         } while ((i < imin) || (i > imax));
 624         return (i);
 625 }
 626
 627 /*
 628  * newprompt()  -  prompt for a string with no existing value
 629  *                 (clears out string buffer first)
 630  */
 631 void newprompt(char *prompt, char *str, int len)
 632 {
 633         color(BRIGHT_MAGENTA);
 634         scr_printf("%s", prompt);
 635         color(DIM_MAGENTA);
 636         ctdl_getline(str, len);
 637         color(DIM_WHITE);
 638 }
 639
 640
 641 int lkey(void)
 642 {                               /* returns a lower case value */
 643         int a;
 644         a = inkey();
 645         if (isupper(a))
 646                 a = tolower(a);
 647         return (a);
 648 }
 649
 650 /*
 651  * parse the citadel.rc file
 652  */
 653 void load_command_set(void)
 654 {
 655         FILE *ccfile;
 656         char buf[1024];
 657         char editor_key[100];
 658         struct citcmd *cptr;
 659         struct citcmd *lastcmd = NULL;
 660         int a, d;
 661         int b = 0;
 662         int i;
 663
 664
 665         /* first, set up some defaults for non-required variables */
 666
 667         for (i = 0; i < MAX_EDITORS; i++)
 668                 strcpy(editor_paths[i], "");
 669         strcpy(printcmd, "");
 670         strcpy(imagecmd, "");
 671         strcpy(rc_username, "");
 672         strcpy(rc_password, "");
 673         rc_floor_mode = 0;
 674         rc_exp_beep = 1;
 675         rc_allow_attachments = 0;
 676         rc_remember_passwords = 0;
 677         strcpy(rc_exp_cmd, "");
 678         rc_display_message_numbers = 0;
 679         rc_force_mail_prompts = 0;
 680         rc_ansi_color = 0;
 681         rc_color_use_bg = 0;
 682         strcpy(rc_url_cmd, "");
 683         strcpy(rc_open_cmd, "");
 684         strcpy(rc_gotmail_cmd, "");
 685 #ifdef HAVE_OPENSSL
 686         rc_encrypt = RC_DEFAULT;
 687 #endif
 688         rc_alt_semantics = 0;
 689
 690         /* now try to open the citadel.rc file */
 691
 692         ccfile = NULL;
 693         if (getenv("HOME") != NULL) {
 694                 snprintf(buf, sizeof buf, "%s/.citadelrc", getenv("HOME"));
 695                 ccfile = fopen(buf, "r");
 696         }
 697         if (ccfile == NULL) {
 698                 ccfile = fopen(file_citadel_rc, "r");
 699         }
 700         if (ccfile == NULL) {
 701                 ccfile = fopen("/etc/citadel.rc", "r");
 702         }
 703         if (ccfile == NULL) {
 704                 ccfile = fopen("./citadel.rc", "r");
 705         }
 706         if (ccfile == NULL) {
 707                 perror("commands: cannot open citadel.rc");
 708                 logoff(NULL, 3);
 709         }
 710         while (fgets(buf, sizeof buf, ccfile) != NULL) {
 711                 while ((!IsEmptyStr(buf)) ? (isspace(buf[strlen(buf) - 1])) : 0)
 712                         buf[strlen(buf) - 1] = 0;
 713
 714                 if (!strncasecmp(buf, "encrypt=", 8)) {
 715                         if (!strcasecmp(&buf[8], "yes")) {
 716 #ifdef HAVE_OPENSSL
 717                                 rc_encrypt = RC_YES;
 718 #else
 719                                 fprintf(stderr, "citadel.rc requires encryption support but citadel is not compiled with OpenSSL");
 720                                 logoff(NULL, 3);
 721 #endif
 722                         }
 723 #ifdef HAVE_OPENSSL
 724                         else if (!strcasecmp(&buf[8], "no")) {
 725                                 rc_encrypt = RC_NO;
 726                         }
 727                         else if (!strcasecmp(&buf[8], "default")) {
 728                                 rc_encrypt = RC_DEFAULT;
 729                         }
 730 #endif
 731                 }
 732
 733                 if (!strncasecmp(buf, "editor=", 7))
 734                         strcpy(editor_paths[0], &buf[7]);
 735
 736                 for (i = 0; i < MAX_EDITORS; i++)
 737                 {
 738                         sprintf(editor_key, "editor%d=", i);
 739                         if (!strncasecmp(buf, editor_key, strlen(editor_key)))
 740                                 strcpy(editor_paths[i], &buf[strlen(editor_key)]);
 741                 }
 742
 743                 if (!strncasecmp(buf, "printcmd=", 9))
 744                         strcpy(printcmd, &buf[9]);
 745
 746                 if (!strncasecmp(buf, "imagecmd=", 9))
 747                         strcpy(imagecmd, &buf[9]);
 748
 749                 if (!strncasecmp(buf, "expcmd=", 7))
 750                         strcpy(rc_exp_cmd, &buf[7]);
 751
 752                 if (!strncasecmp(buf, "use_floors=", 11)) {
 753                         if (!strcasecmp(&buf[11], "yes"))
 754                                 rc_floor_mode = RC_YES;
 755                         if (!strcasecmp(&buf[11], "no"))
 756                                 rc_floor_mode = RC_NO;
 757                         if (!strcasecmp(&buf[11], "default"))
 758                                 rc_floor_mode = RC_DEFAULT;
 759                 }
 760                 if (!strncasecmp(buf, "beep=", 5)) {
 761                         rc_exp_beep = atoi(&buf[5]);
 762                 }
 763                 if (!strncasecmp(buf, "allow_attachments=", 18)) {
 764                         rc_allow_attachments = atoi(&buf[18]);
 765                 }
 766                 if (!strncasecmp(buf, "idle_threshold=", 15)) {
 767                         rc_idle_threshold = atol(&buf[15]);
 768                 }
 769                 if (!strncasecmp(buf, "remember_passwords=", 19)) {
 770                         rc_remember_passwords = atoi(&buf[19]);
 771                 }
 772                 if (!strncasecmp(buf, "display_message_numbers=", 24)) {
 773                         rc_display_message_numbers = atoi(&buf[24]);
 774                 }
 775                 if (!strncasecmp(buf, "force_mail_prompts=", 19)) {
 776                         rc_force_mail_prompts = atoi(&buf[19]);
 777                 }
 778                 if (!strncasecmp(buf, "ansi_color=", 11)) {
 779                         if (!strncasecmp(&buf[11], "on", 2))
 780                                 rc_ansi_color = 1;
 781                         if (!strncasecmp(&buf[11], "auto", 4))
 782                                 rc_ansi_color = 2;      /* autodetect */
 783                         if (!strncasecmp(&buf[11], "user", 4))
 784                                 rc_ansi_color = 3;      /* user config */
 785                 }
 786                 if (!strncasecmp(buf, "use_background=", 15)) {
 787                         if (!strncasecmp(&buf[15], "on", 2))
 788                                 rc_color_use_bg = 9;
 789                 }
 790                 if (!strncasecmp(buf, "prompt_control=", 15)) {
 791                         if (!strncasecmp(&buf[15], "on", 2))
 792                                 rc_prompt_control = 1;
 793                         if (!strncasecmp(&buf[15], "user", 4))
 794                                 rc_prompt_control = 3;  /* user config */
 795                 }
 796                 if (!strncasecmp(buf, "username=", 9))
 797                         strcpy(rc_username, &buf[9]);
 798
 799                 if (!strncasecmp(buf, "password=", 9))
 800                         strcpy(rc_password, &buf[9]);
 801
 802                 if (!strncasecmp(buf, "urlcmd=", 7))
 803                         strcpy(rc_url_cmd, &buf[7]);
 804
 805                 if (!strncasecmp(buf, "opencmd=", 7))
 806                         strcpy(rc_open_cmd, &buf[8]);
 807
 808                 if (!strncasecmp(buf, "gotmailcmd=", 11))
 809                         strcpy(rc_gotmail_cmd, &buf[11]);
 810
 811                 if (!strncasecmp(buf, "alternate_semantics=", 20)) {
 812                         if (!strncasecmp(&buf[20], "yes", 3)) {
 813                                 rc_alt_semantics = 1;
 814                         }
 815                         else {
 816                                 rc_alt_semantics = 0;
 817                         }
 818                 }
 819
 820                 if (!strncasecmp(buf, "cmd=", 4)) {
 821                         strcpy(buf, &buf[4]);
 822
 823                         cptr = (struct citcmd *) malloc(sizeof(struct citcmd));
 824
 825                         cptr->c_cmdnum = 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                         cptr->c_axlevel = 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                         for (a = 0; a < 5; ++a)
 838                                 cptr->c_keys[a][0] = 0;
 839
 840                         a = 0;
 841                         b = 0;
 842                         buf[strlen(buf) + 1] = 0;
 843                         while (!IsEmptyStr(buf)) {
 844                                 b = strlen(buf);
 845                                 for (d = strlen(buf); d >= 0; --d)
 846                                         if (buf[d] == ',')
 847                                                 b = d;
 848                                 strncpy(cptr->c_keys[a], buf, b);
 849                                 cptr->c_keys[a][b] = 0;
 850                                 if (buf[b] == ',')
 851                                         strcpy(buf, &buf[b + 1]);
 852                                 else
 853                                         strcpy(buf, "");
 854                                 ++a;
 855                         }
 856
 857                         cptr->next = NULL;
 858                         if (cmdlist == NULL)
 859                                 cmdlist = cptr;
 860                         else
 861                                 lastcmd->next = cptr;
 862                         lastcmd = cptr;
 863                 }
 864         }
 865         fclose(ccfile);
 866 }
 867
 868
 869
 870 /*
 871  * return the key associated with a command
 872  */
 873 char keycmd(char *cmdstr)
 874 {
 875         int a;
 876
 877         for (a = 0; !IsEmptyStr(&cmdstr[a]); ++a)
 878                 if (cmdstr[a] == '&')
 879                         return (tolower(cmdstr[a + 1]));
 880         return (0);
 881 }
 882
 883
 884 /*
 885  * Output the string from a key command without the ampersand
 886  * "mode" should be set to 0 for normal or 1 for <C>ommand key highlighting
 887  */
 888 char *cmd_expand(char *strbuf, int mode)
 889 {
 890         int a;
 891         static char exp[64];
 892         char buf[1024];
 893
 894         strcpy(exp, strbuf);
 895
 896         for (a = 0; exp[a]; ++a) {
 897                 if (strbuf[a] == '&') {
 898
 899                         /* dont echo these non mnemonic command keys */
 900                         int noecho = strbuf[a+1] == '<' || strbuf[a+1] == '>' || strbuf[a+1] == '+' || strbuf[a+1] == '-';
 901
 902                         if (mode == 0) {
 903                                 strcpy(&exp[a], &exp[a + 1 + noecho]);
 904                         }
 905                         if (mode == 1) {
 906                                 exp[a] = '<';
 907                                 strcpy(buf, &exp[a + 2]);
 908                                 exp[a + 2] = '>';
 909                                 exp[a + 3] = 0;
 910                                 strcat(exp, buf);
 911                         }
 912                 }
 913                 if (!strncmp(&exp[a], "^r", 2)) {
 914                         strcpy(buf, exp);
 915                         strcpy(&exp[a], room_name);
 916                         strcat(exp, &buf[a + 2]);
 917                 }
 918                 if (!strncmp(&exp[a], "^c", 2)) {
 919                         exp[a] = ',';
 920                         strcpy(&exp[a + 1], &exp[a + 2]);
 921                 }
 922         }
 923
 924         return (exp);
 925 }
 926
 927
 928
 929 /*
 930  * Comparison function to determine if entered commands match a
 931  * command loaded from the config file.
 932  */
 933 int cmdmatch(char *cmdbuf, struct citcmd *cptr, int ncomp)
 934 {
 935         int a;
 936         int cmdax;
 937
 938         cmdax = 0;
 939         if (is_room_aide)
 940                 cmdax = 1;
 941         if (axlevel >= 6)
 942                 cmdax = 2;
 943
 944         for (a = 0; a < ncomp; ++a) {
 945                 if ((tolower(cmdbuf[a]) != keycmd(cptr->c_keys[a]))
 946                     || (cptr->c_axlevel > cmdax))
 947                         return (0);
 948         }
 949         return (1);
 950 }
 951
 952
 953 /*
 954  * This function returns 1 if a given command requires a string input
 955  */
 956 int requires_string(struct citcmd *cptr, int ncomp)
 957 {
 958         int a;
 959         char buf[64];
 960
 961         strcpy(buf, cptr->c_keys[ncomp - 1]);
 962         for (a = 0; !IsEmptyStr(&buf[a]); ++a) {
 963                 if (buf[a] == ':')
 964                         return (1);
 965         }
 966         return (0);
 967 }
 968
 969
 970 /*
 971  * Input a command at the main prompt.
 972  * This function returns an integer command number.  If the command prompts
 973  * for a string then it is placed in the supplied buffer.
 974  */
 975 int getcmd(CtdlIPC *ipc, char *argbuf)
 976 {
 977         char cmdbuf[5];
 978         int cmdspaces[5];
 979         int cmdpos;
 980         int ch;
 981         int a;
 982         int got;
 983         int this_lazy_cmd;
 984         struct citcmd *cptr;
 985
 986         /*
 987          * Starting a new command now, so set sigcaught to 0.  This variable
 988          * is set to nonzero (usually NEXT_KEY or STOP_KEY) if a command has
 989          * been interrupted by a keypress.
 990          */
 991         sigcaught = 0;
 992
 993         /* Switch color support on or off if we're in user mode */
 994         if (rc_ansi_color == 3) {
 995                 if (userflags & US_COLOR)
 996                         enable_color = 1;
 997                 else
 998                         enable_color = 0;
 999         }
1000         /* if we're running in idiot mode, display a cute little menu */
1001         IFNEXPERT formout(ipc, "mainmenu");
1002
1003         print_instant();
1004         strcpy(argbuf, "");
1005         cmdpos = 0;
1006         for (a = 0; a < 5; ++a)
1007                 cmdbuf[a] = 0;
1008         /* now the room prompt... */
1009         ok_to_interrupt = 1;
1010         color(BRIGHT_WHITE);
1011         scr_printf("\n%s", room_name);
1012         color(DIM_WHITE);
1013         scr_printf("%c ", room_prompt(room_flags));
1014
1015         while (1) {
1016                 ch = inkey();
1017                 ok_to_interrupt = 0;
1018
1019                 /* Handle the backspace key, but only if there's something
1020                  * to backspace over...
1021                  */
1022                 if ((ch == 8) && (cmdpos > 0)) {
1023                         back(cmdspaces[cmdpos - 1] + 1);
1024                         cmdbuf[cmdpos] = 0;
1025                         --cmdpos;
1026                 }
1027                 /* Spacebar invokes "lazy traversal" commands */
1028                 if ((ch == 32) && (cmdpos == 0)) {
1029                         this_lazy_cmd = next_lazy_cmd;
1030                         if (this_lazy_cmd == 13)
1031                                 next_lazy_cmd = 5;
1032                         if (this_lazy_cmd == 5)
1033                                 next_lazy_cmd = 13;
1034                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1035                                 if (cptr->c_cmdnum == this_lazy_cmd) {
1036                                         for (a = 0; a < 5; ++a)
1037                                                 if (cptr->c_keys[a][0] != 0)
1038                                                         scr_printf("%s ", cmd_expand(
1039                                                                                         cptr->c_keys[a], 0));
1040                                         scr_printf("\n");
1041                                         return (this_lazy_cmd);
1042                                 }
1043                         }
1044                         scr_printf("\n");
1045                         return (this_lazy_cmd);
1046                 }
1047                 /* Otherwise, process the command */
1048                 cmdbuf[cmdpos] = tolower(ch);
1049
1050                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1051                         if (cmdmatch(cmdbuf, cptr, cmdpos + 1)) {
1052
1053                                 scr_printf("%s", cmd_expand(cptr->c_keys[cmdpos], 0));
1054                                 cmdspaces[cmdpos] = strlen(
1055                                     cmd_expand(cptr->c_keys[cmdpos], 0));
1056                                 if (cmdpos < 4)
1057                                         if ((cptr->c_keys[cmdpos + 1]) != 0)
1058                                                 scr_putc(' ');
1059                                 ++cmdpos;
1060                         }
1061                 }
1062
1063                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1064                         if (cmdmatch(cmdbuf, cptr, 5)) {
1065                                 /* We've found our command. */
1066                                 if (requires_string(cptr, cmdpos)) {
1067                                         ctdl_getline(argbuf, 64);
1068                                 } else {
1069                                         scr_printf("\n");
1070                                 }
1071
1072                                 /* If this command is one that changes rooms,
1073                                  * then the next lazy-command (space bar)
1074                                  * should be "read new" instead of "goto"
1075                                  */
1076                                 if ((cptr->c_cmdnum == 5)
1077                                     || (cptr->c_cmdnum == 6)
1078                                     || (cptr->c_cmdnum == 47)
1079                                     || (cptr->c_cmdnum == 52)
1080                                     || (cptr->c_cmdnum == 16)
1081                                     || (cptr->c_cmdnum == 20))
1082                                         next_lazy_cmd = 13;
1083
1084                                 /* If this command is "read new"
1085                                  * then the next lazy-command (space bar)
1086                                  * should be "goto"
1087                                  */
1088                                 if (cptr->c_cmdnum == 13)
1089                                         next_lazy_cmd = 5;
1090
1091                                 return (cptr->c_cmdnum);
1092
1093                         }
1094                 }
1095
1096                 if (ch == '?') {
1097                         scr_printf("\rOne of ...                         \n");
1098                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1099                                 if (cmdmatch(cmdbuf, cptr, cmdpos)) {
1100                                         for (a = 0; a < 5; ++a) {
1101                                            keyopt(cmd_expand(cptr->c_keys[a], 1));
1102                                    scr_printf(" ");
1103                                         }
1104                                         scr_printf("\n");
1105                                 }
1106                         }
1107                 sigcaught = 0;
1108
1109                         scr_printf("\n%s%c ", room_name, room_prompt(room_flags));
1110                         got = 0;
1111                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1112                                 if ((got == 0) && (cmdmatch(cmdbuf, cptr, cmdpos))) {
1113                                         for (a = 0; a < cmdpos; ++a) {
1114                                                 scr_printf("%s ",
1115                                                        cmd_expand(cptr->c_keys[a], 0));
1116                                         }
1117                                         got = 1;
1118                                 }
1119                         }
1120                 }
1121         }
1122
1123 }
1124
1125
1126
1127
1128
1129 /*
1130  * set tty modes.  commands are:
1131  *
1132  * 01- set to Citadel mode
1133  * 2 - save current settings for later restoral
1134  * 3 - restore saved settings
1135  */
1136 #ifdef HAVE_TERMIOS_H
1137 void stty_ctdl(int cmd)
1138 {                               /* SysV version of stty_ctdl() */
1139         struct termios live;
1140         static struct termios saved_settings;
1141         static int last_cmd = 0;
1142
1143         if (cmd == SB_LAST)
1144                 cmd = last_cmd;
1145         else
1146                 last_cmd = cmd;
1147
1148         if ((cmd == 0) || (cmd == 1)) {
1149                 tcgetattr(0, &live);
1150                 live.c_iflag = ISTRIP | IXON | IXANY;
1151                 live.c_oflag = OPOST | ONLCR;
1152                 live.c_lflag = ISIG | NOFLSH;
1153
1154                 live.c_cc[VINTR] = 0;
1155                 live.c_cc[VQUIT] = 0;
1156
1157 #ifdef hpux
1158                 live.c_cc[VMIN] = 0;
1159                 live.c_cc[VTIME] = 0;
1160 #endif
1161
1162                 /* do we even need this stuff anymore? */
1163                 /* live.c_line=0; */
1164                 live.c_cc[VERASE] = 8;
1165                 live.c_cc[VKILL] = 24;
1166                 live.c_cc[VEOF] = 1;
1167                 live.c_cc[VEOL] = 255;
1168                 live.c_cc[VEOL2] = 0;
1169                 live.c_cc[VSTART] = 0;
1170                 tcsetattr(0, TCSADRAIN, &live);
1171         }
1172         if (cmd == 2) {
1173                 tcgetattr(0, &saved_settings);
1174         }
1175         if (cmd == 3) {
1176                 tcsetattr(0, TCSADRAIN, &saved_settings);
1177         }
1178
1179 }
1180 #else
1181 void stty_ctdl(int cmd)
1182 {                               /* BSD version of stty_ctdl() */
1183         struct sgttyb live;
1184         static struct sgttyb saved_settings;
1185         static int last_cmd = 0;
1186
1187         if (cmd == SB_LAST)
1188                 cmd = last_cmd;
1189         else
1190                 last_cmd = cmd;
1191
1192         if ((cmd == 0) || (cmd == 1)) {
1193                 gtty(0, &live);
1194                 live.sg_flags |= CBREAK;
1195                 live.sg_flags |= CRMOD;
1196                 live.sg_flags |= NL1;
1197                 live.sg_flags &= ~ECHO;
1198                 if (cmd == 1)
1199                         live.sg_flags |= NOFLSH;
1200                 stty(0, &live);
1201         }
1202         if (cmd == 2) {
1203                 gtty(0, &saved_settings);
1204         }
1205         if (cmd == 3) {
1206                 stty(0, &saved_settings);
1207         }
1208 }
1209 #endif
1210
1211
1212 /*
1213  * display_help()  -  help file viewer
1214  */
1215 void display_help(CtdlIPC *ipc, char *name)
1216 {
1217         formout(ipc, name);
1218 }
1219
1220
1221 /*
1222  * fmout() - Citadel text formatter and paginator
1223  */
1224 int fmout(
1225         int width,      /* screen width to use */
1226         FILE *fpin,     /* file to read from, or NULL to format given text */
1227         char *text,     /* text to be formatted (when fpin is NULL */
1228         FILE *fpout,    /* file to write to, or NULL to write to screen */
1229         int subst)      /* nonzero if we should use hypertext mode */
1230 {
1231         char *buffer = NULL;    /* The current message */
1232         char *word = NULL;      /* What we are about to actually print */
1233         char *e;                /* Pointer to position in text */
1234         char old = 0;           /* The previous character */
1235         int column = 0;         /* Current column */
1236         size_t i;               /* Generic counter */
1237
1238         /* Space for a single word, which can be at most screenwidth */
1239         word = (char *)calloc(1, width);
1240         if (!word) {
1241                 scr_printf("Can't alloc memory to print message: %s!\n",
1242                                 strerror(errno));
1243                 logoff(NULL, 3);
1244         }
1245
1246         /* Read the entire message body into memory */
1247         if (fpin) {
1248                 buffer = load_message_from_file(fpin);
1249                 if (!buffer) {
1250                         scr_printf("Can't print message: %s!\n",
1251                                         strerror(errno));
1252                         logoff(NULL, 3);
1253                 }
1254         } else {
1255                 buffer = text;
1256         }
1257         e = buffer;
1258
1259         /* Run the message body */
1260         while (*e) {
1261                 /* Catch characters that shouldn't be there at all */
1262                 if (*e == '\r') {
1263                         e++;
1264                         continue;
1265                 }
1266                 /* First, are we looking at a newline? */
1267                 if (*e == '\n') {
1268                         e++;
1269                         if (*e == ' ') {        /* Paragraph */
1270                                 if (fpout) {
1271                                         fprintf(fpout, "\n");
1272                                 } else {
1273                                         scr_printf("\n");
1274                                 }
1275                                 column = 0;
1276                         } else if (old != ' ') {/* Don't print two spaces */
1277                                 if (fpout) {
1278                                         fprintf(fpout, " ");
1279                                 } else {
1280                                         scr_printf(" ");
1281                                 }
1282                                 column++;
1283                         }
1284                         old = '\n';
1285                         continue;
1286                 }
1287
1288                 /* Are we looking at a nonprintable?
1289                  * (This section is now commented out because we could be displaying
1290                  * a character set like UTF-8 or ISO-8859-1.)
1291                 if ( (*e < 32) || (*e > 126) ) {
1292                         e++;
1293                         continue;
1294                 } */
1295
1296                 /* Or are we looking at a space? */
1297                 if (*e == ' ') {
1298                         e++;
1299                         if (column >= width - 1) {
1300                                 /* Are we in the rightmost column? */
1301                                 if (fpout) {
1302                                         fprintf(fpout, "\n");
1303                                 } else {
1304                                         scr_printf("\n");
1305                                 }
1306                                 column = 0;
1307                         } else if (!(column == 0 && old == ' ')) {
1308                                 /* Eat only the first space on a line */
1309                                 if (fpout) {
1310                                         fprintf(fpout, " ");
1311                                 } else {
1312                                         scr_printf(" ");
1313                                 }
1314                                 column++;
1315                         }
1316                         /* ONLY eat the FIRST space on a line */
1317                         old = ' ';
1318                         continue;
1319                 }
1320                 old = *e;
1321
1322                 /* Read a word, slightly messy */
1323                 i = 0;
1324                 while (e[i]) {
1325                         if (!isprint(e[i]) && !isspace(e[i]))
1326                                 e[i] = ' ';
1327                         if (isspace(e[i]))
1328                                 break;
1329                         i++;
1330                 }
1331
1332                 /* We should never see these, but... slightly messy */
1333                 if (e[i] == '\t' || e[i] == '\f' || e[i] == '\v')
1334                         e[i] = ' ';
1335
1336                 /* Break up really long words */
1337                 /* TODO: auto-hyphenation someday? */
1338                 if (i >= width)
1339                         i = width - 1;
1340                 strncpy(word, e, i);
1341                 word[i] = 0;
1342
1343                 /* Decide where to print the word */
1344                 if (column + i >= width) {
1345                         /* Wrap to the next line */
1346                         if (fpout) {
1347                                 fprintf(fpout, "\n");
1348                         } else {
1349                                 scr_printf("\n");
1350                         }
1351                         column = 0;
1352                 }
1353
1354                 /* Print the word */
1355                 if (fpout) {
1356                         fprintf(fpout, "%s", word);
1357                 } else {
1358                         scr_printf("%s", word);
1359                 }
1360                 column += i;
1361                 e += i;         /* Start over with the whitepsace! */
1362         }
1363
1364         free(word);
1365         if (fpin)               /* We allocated this, remember? */
1366                 free(buffer);
1367
1368         /* Is this necessary?  It makes the output kind of spacey. */
1369         if (fpout) {
1370                 fprintf(fpout, "\n");
1371         } else {
1372                 scr_printf("\n");
1373         }
1374
1375         return sigcaught;
1376 }
1377
1378
1379 /*
1380  * support ANSI color if defined
1381  */
1382 void color(int colornum)
1383 {
1384         static int hold_color;
1385         static int current_color;
1386
1387         if (colornum == COLOR_PUSH) {
1388                 hold_color = current_color;
1389                 return;
1390         }
1391
1392         if (colornum == COLOR_POP) {
1393                 color(hold_color);
1394                 return;
1395         }
1396
1397         current_color = colornum;
1398         if (enable_color) {
1399                 /* When switching to dim white, actually output an 'original
1400                  * pair' sequence -- this looks better on black-on-white
1401                  * terminals. - Changed to ORIGINAL_PAIR as this actually
1402                  * wound up looking horrible on black-on-white terminals, not
1403                  * to mention transparent terminals.
1404                  */
1405                 if (colornum == ORIGINAL_PAIR)
1406                         printf("\033[0;39;49m");
1407                 else
1408                         printf("\033[%d;3%d;4%dm",
1409                                         (colornum & 8) ? 1 : 0,
1410                                         (colornum & 7),
1411                                         rc_color_use_bg);
1412
1413         }
1414 }
1415
1416 void cls(int colornum)
1417 {
1418         if (enable_color) {
1419                 printf("\033[4%dm\033[2J\033[H\033[0m",
1420                                 colornum ? colornum : rc_color_use_bg);
1421         }
1422 }
1423
1424
1425 /*
1426  * Detect whether ANSI color is available (answerback)
1427  */
1428 void send_ansi_detect(void)
1429 {
1430         if (rc_ansi_color == 2) {
1431                 printf("\033[c");
1432                 scr_flush();
1433                 time(&AnsiDetect);
1434         }
1435 }
1436
1437 void look_for_ansi(void)
1438 {
1439         fd_set rfds;
1440         struct timeval tv;
1441         char abuf[512];
1442         time_t now;
1443         int a, rv;
1444
1445         if (rc_ansi_color == 0) {
1446                 enable_color = 0;
1447         } else if (rc_ansi_color == 1) {
1448                 enable_color = 1;
1449         } else if (rc_ansi_color == 2) {
1450
1451                 /* otherwise, do the auto-detect */
1452
1453                 strcpy(abuf, "");
1454
1455                 time(&now);
1456                 if ((now - AnsiDetect) < 2)
1457                         sleep(1);
1458
1459                 do {
1460                         FD_ZERO(&rfds);
1461                         FD_SET(0, &rfds);
1462                         tv.tv_sec = 0;
1463                         tv.tv_usec = 1;
1464
1465                         select(1, &rfds, NULL, NULL, &tv);
1466                         if (FD_ISSET(0, &rfds)) {
1467                                 abuf[strlen(abuf) + 1] = 0;
1468                                 rv = read(0, &abuf[strlen(abuf)], 1);
1469                                 if (rv < 0) {
1470                                         scr_printf("failed to read after select: %s",
1471                                                    strerror(errno));
1472                                         break;
1473                                 }
1474                         }
1475                 } while (FD_ISSET(0, &rfds));
1476
1477                 for (a = 0; !IsEmptyStr(&abuf[a]); ++a) {
1478                         if ((abuf[a] == 27) && (abuf[a + 1] == '[')
1479                             && (abuf[a + 2] == '?')) {
1480                                 enable_color = 1;
1481                         }
1482                 }
1483         }
1484 }
1485
1486
1487 /*
1488  * Display key options (highlight hotkeys inside angle brackets)
1489  */
1490 void keyopt(char *buf) {
1491         int i;
1492
1493         color(DIM_WHITE);
1494         for (i=0; !IsEmptyStr(&buf[i]); ++i) {
1495                 if (buf[i]=='<') {
1496                         scr_printf("%c", buf[i]);
1497                         color(BRIGHT_MAGENTA);
1498                 } else {
1499                         if (buf[i]=='>'&& buf[i+1] != '>') {
1500                                 color(DIM_WHITE);
1501                         }
1502                         scr_printf("%c", buf[i]);
1503                 }
1504         }
1505         color(DIM_WHITE);
1506 }
1507
1508
1509
1510 /*
1511  * Present a key-menu line choice type of thing
1512  */
1513 char keymenu(char *menuprompt, char *menustring) {
1514         int i, c, a;
1515         int choices;
1516         int do_prompt = 0;
1517         char buf[1024];
1518         int ch;
1519         int display_prompt = 1;
1520
1521         choices = num_tokens(menustring, '|');
1522
1523         if (menuprompt != NULL) do_prompt = 1;
1524         if ((menuprompt != NULL) && (IsEmptyStr(menuprompt))) do_prompt = 0;
1525
1526         while (1) {
1527                 if (display_prompt) {
1528                         if (do_prompt) {
1529                                 scr_printf("%s ", menuprompt);
1530                         }
1531                         else {
1532                                 for (i=0; i<choices; ++i) {
1533                                         extract_token(buf, menustring, i, '|', sizeof buf);
1534                                         keyopt(buf);
1535                                         scr_printf(" ");
1536                                 }
1537                         }
1538                         scr_printf("-> ");
1539                         display_prompt = 0;
1540                 }
1541                 ch = lkey();
1542
1543                 if ( (do_prompt) && (ch=='?') ) {
1544                         scr_printf("\rOne of...                               ");
1545                         scr_printf("                                      \n");
1546                         for (i=0; i<choices; ++i) {
1547                                 extract_token(buf, menustring, i, '|', sizeof buf);
1548                                 scr_printf("   ");
1549                                 keyopt(buf);
1550                                 scr_printf("\n");
1551                         }
1552                         scr_printf("\n");
1553                         display_prompt = 1;
1554                 }
1555
1556                 for (i=0; i<choices; ++i) {
1557                         extract_token(buf, menustring, i, '|', sizeof buf);
1558                         for (c=1; !IsEmptyStr(&buf[c]); ++c) {
1559                                 if ( (ch == tolower(buf[c]))
1560                                    && (buf[c-1]=='<')
1561                                    && (buf[c+1]=='>') ) {
1562                                         for (a=0; !IsEmptyStr(&buf[a]); ++a) {
1563                                                 if ( (a!=(c-1)) && (a!=(c+1))) {
1564                                                         scr_putc(buf[a]);
1565                                                 }
1566                                         }
1567                                         scr_printf("\n");
1568                                         return ch;
1569                                 }
1570                         }
1571                 }
1572         }
1573 }