citadel/textclient/commands.c

   1 /*
   2  * This file contains functions which implement parts of the
   3  * text-mode user interface.
   4  *
   5  * Copyright (c) 1987-2009 by the citadel.org team
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "sysdep.h"
  23 #include <stdlib.h>
  24 #include <unistd.h>
  25 #include <stdio.h>
  26 #include <fcntl.h>
  27 #include <ctype.h>
  28 #include <string.h>
  29 #include <sys/types.h>
  30
  31 #if TIME_WITH_SYS_TIME
  32 # include <sys/time.h>
  33 # include <time.h>
  34 #else
  35 # if HAVE_SYS_TIME_H
  36 #  include <sys/time.h>
  37 # else
  38 #  include <time.h>
  39 # endif
  40 #endif
  41
  42 #ifdef HAVE_TERMIOS_H
  43 #include <termios.h>
  44 #else
  45 #include <sgtty.h>
  46 #endif
  47
  48 #ifdef HAVE_SYS_SELECT_H
  49 #include <sys/select.h>
  50 #endif
  51
  52 #ifdef THREADED_CLIENT
  53 #include <pthread.h>
  54 #endif
  55
  56 #include <signal.h>
  57 #include <errno.h>
  58 #include <stdarg.h>
  59 #include <libcitadel.h>
  60 #include "citadel.h"
  61 #include "citadel_ipc.h"
  62 #include "commands.h"
  63 #include "messages.h"
  64 #include "citadel_decls.h"
  65 #include "routines.h"
  66 #include "routines2.h"
  67 #include "rooms.h"
  68 #include "client_chat.h"
  69 #include "citadel_dirs.h"
  70 #ifndef HAVE_SNPRINTF
  71 #include "snprintf.h"
  72 #endif
  73 #include "screen.h"
  74 #include "ecrash.h"
  75
  76 struct citcmd {
  77         struct citcmd *next;
  78         int c_cmdnum;
  79         int c_axlevel;
  80         char c_keys[5][64];
  81 };
  82
  83 #define IFNEXPERT if ((userflags&US_EXPERT)==0)
  84
  85
  86 int rc_exp_beep;
  87 char rc_exp_cmd[1024];
  88 int rc_allow_attachments;
  89 int rc_display_message_numbers;
  90 int rc_force_mail_prompts;
  91 int rc_remember_passwords;
  92 int rc_ansi_color;
  93 int rc_color_use_bg;
  94 int rc_prompt_control = 0;
  95 time_t rc_idle_threshold = (time_t)900;
  96 char rc_url_cmd[SIZ];
  97 char rc_open_cmd[SIZ];
  98 char rc_gotmail_cmd[SIZ];
  99
 100 char *gl_string;
 101 int next_lazy_cmd = 5;
 102
 103 int lines_printed = 0;          /* line count for paginator */
 104 extern int screenwidth, screenheight;
 105 extern int termn8;
 106 extern CtdlIPC *ipc_for_signal_handlers;        /* KLUDGE cover your eyes */
 107
 108 struct citcmd *cmdlist = NULL;
 109
 110
 111 /* these variables are local to this module */
 112 char keepalives_enabled = KA_YES;       /* send NOOPs to server when idle */
 113 int ok_to_interrupt = 0;                /* print instant msgs asynchronously */
 114 time_t AnsiDetect;                      /* when did we send the detect code? */
 115 int enable_color = 0;                   /* nonzero for ANSI color */
 116
 117
 118
 119
 120 /*
 121  * If an interesting key has been pressed, return its value, otherwise 0
 122  */
 123 char was_a_key_pressed(void) {
 124         fd_set rfds;
 125         struct timeval tv;
 126         int the_character;
 127         int retval;
 128
 129         FD_ZERO(&rfds);
 130         FD_SET(0, &rfds);
 131         tv.tv_sec = 0;
 132         tv.tv_usec = 0;
 133         retval = select(1, &rfds, NULL, NULL, &tv);
 134
 135         /* Careful!  Disable keepalives during keyboard polling; we're probably
 136          * in the middle of a data transfer from the server, in which case
 137          * sending a NOOP would throw the client protocol out of sync.
 138          */
 139         if (FD_ISSET(0, &rfds)) {
 140                 set_keepalives(KA_NO);
 141                 the_character = inkey();
 142                 set_keepalives(KA_YES);
 143         }
 144         else {
 145                 the_character = 0;
 146         }
 147         return(the_character);
 148 }
 149
 150
 151
 152
 153
 154 /*
 155  * Check to see if we need to pause at the end of a screen.
 156  * If we do, we have to switch to half keepalives during the pause because
 157  * we are probably in the middle of a server operation and the NOOP command
 158  * would confuse everything.
 159  */
 160 int checkpagin(int lp, unsigned int pagin, unsigned int height)
 161 {
 162         int thekey;
 163
 164         if (sigcaught) return(lp);
 165         thekey = was_a_key_pressed();
 166         if (thekey == 'q' || thekey == 'Q' || thekey == 's' || thekey == 'S')
 167                 thekey = STOP_KEY;
 168         if (thekey == 'n' || thekey == 'N')
 169                 thekey = NEXT_KEY;
 170         if ( (thekey == NEXT_KEY) || (thekey == STOP_KEY)) sigcaught = thekey;
 171         if (sigcaught) return(lp);
 172
 173         if (!pagin) return(0);
 174         if (lp>=(height-1)) {
 175                 set_keepalives(KA_HALF);
 176                 hit_any_key(ipc_for_signal_handlers);   /* Cheating -IO */
 177                 set_keepalives(KA_YES);
 178                 return(0);
 179         }
 180         return(lp);
 181 }
 182
 183
 184
 185
 186 /*
 187  * pprintf()  ...   paginated version of printf()
 188  */
 189 void pprintf(const char *format, ...) {
 190         va_list arg_ptr;
 191         static char buf[4096];  /* static for performance, change if needed */
 192         int i;
 193
 194         /* If sigcaught is nonzero, a keypress has interrupted this and we
 195          * should just drain output.
 196          */
 197         if (sigcaught) return;
 198
 199         /* Otherwise, start spewing... */
 200         va_start(arg_ptr, format);
 201         vsnprintf(buf, sizeof(buf), format, arg_ptr);
 202         va_end(arg_ptr);
 203
 204         for (i=0; !IsEmptyStr(&buf[i]); ++i) {
 205                 scr_putc(buf[i]);
 206                 if (buf[i]==10) {
 207                         ++lines_printed;
 208                         lines_printed = checkpagin(lines_printed,
 209                                 (userflags & US_PAGINATOR),
 210                                 screenheight);
 211                 }
 212         }
 213 }
 214
 215
 216
 217 /*
 218  * print_instant()  -  print instant messages if there are any
 219  */
 220 void print_instant(void)
 221 {
 222         char buf[1024];
 223         FILE *outpipe;
 224         time_t timestamp;
 225         struct tm stamp;
 226         int flags = 0;
 227         char sender[64];
 228         char node[64];
 229         char *listing = NULL;
 230         int r;                  /* IPC result code */
 231
 232         if (instant_msgs == 0)
 233                 return;
 234
 235         if (rc_exp_beep) {
 236                 ctdl_beep();
 237         }
 238         if (IsEmptyStr(rc_exp_cmd)) {
 239                 color(BRIGHT_RED);
 240                 scr_printf("\r---");
 241         }
 242
 243         while (instant_msgs != 0) {
 244                 r = CtdlIPCGetInstantMessage(ipc_for_signal_handlers, &listing, buf);
 245                 if (r / 100 != 1)
 246                         return;
 247
 248                 instant_msgs = extract_int(buf, 0);
 249                 timestamp = extract_long(buf, 1);
 250                 flags = extract_int(buf, 2);
 251                 extract_token(sender, buf, 3, '|', sizeof sender);
 252                 extract_token(node, buf, 4, '|', sizeof node);
 253                 strcpy(last_paged, sender);
 254
 255                 localtime_r(&timestamp, &stamp);
 256
 257                 /* If the page is a Logoff Request, honor it. */
 258                 if (flags & 2) {
 259                         termn8 = 1;
 260                         return;
 261                 }
 262
 263                 if (!IsEmptyStr(rc_exp_cmd)) {
 264                         outpipe = popen(rc_exp_cmd, "w");
 265                         if (outpipe != NULL) {
 266                                 /* Header derived from flags */
 267                                 if (flags & 2)
 268                                         fprintf(outpipe,
 269                                                "Please log off now, as requested ");
 270                                 else if (flags & 1)
 271                                         fprintf(outpipe, "Broadcast message ");
 272                                 else if (flags & 4)
 273                                         fprintf(outpipe, "Chat request ");
 274                                 else
 275                                         fprintf(outpipe, "Message ");
 276                                 /* Timestamp.  Can this be improved? */
 277                                 if (stamp.tm_hour == 0 || stamp.tm_hour == 12)
 278                                         fprintf(outpipe, "at 12:%02d%cm",
 279                                                 stamp.tm_min,
 280                                                 stamp.tm_hour ? 'p' : 'a');
 281                                 else if (stamp.tm_hour > 12)            /* pm */
 282                                         fprintf(outpipe, "at %d:%02dpm",
 283                                                 stamp.tm_hour - 12,
 284                                                 stamp.tm_min);
 285                                 else                                    /* am */
 286                                         fprintf(outpipe, "at %d:%02dam",
 287                                                 stamp.tm_hour, stamp.tm_min);
 288                                 fprintf(outpipe, " from %s", sender);
 289                                 if (strncmp(ipc_for_signal_handlers->ServInfo.nodename, node, 32))
 290                                         fprintf(outpipe, " @%s", node);
 291                                 fprintf(outpipe, ":\n%s\n", listing);
 292                                 pclose(outpipe);
 293                                 if (instant_msgs == 0)
 294                                         return;
 295                                 continue;
 296                         }
 297                 }
 298                 /* fall back to built-in instant message display */
 299                 scr_printf("\n");
 300                 lines_printed++;
 301
 302                 /* Header derived from flags */
 303                 if (flags & 2)
 304                         scr_printf("Please log off now, as requested ");
 305                 else if (flags & 1)
 306                         scr_printf("Broadcast message ");
 307                 else if (flags & 4)
 308                         scr_printf("Chat request ");
 309                 else
 310                         scr_printf("Message ");
 311
 312                 /* Timestamp.  Can this be improved? */
 313                 if (stamp.tm_hour == 0 || stamp.tm_hour == 12)/* 12am/12pm */
 314                         scr_printf("at 12:%02d%cm", stamp.tm_min,
 315                                 stamp.tm_hour ? 'p' : 'a');
 316                 else if (stamp.tm_hour > 12)                    /* pm */
 317                         scr_printf("at %d:%02dpm",
 318                                 stamp.tm_hour - 12, stamp.tm_min);
 319                 else                                            /* am */
 320                         scr_printf("at %d:%02dam", stamp.tm_hour, stamp.tm_min);
 321
 322                 /* Sender */
 323                 scr_printf(" from %s", sender);
 324
 325                 /* Remote node, if any */
 326                 if (strncmp(ipc_for_signal_handlers->ServInfo.nodename, node, 32))
 327                         scr_printf(" @%s", node);
 328
 329                 scr_printf(":\n");
 330                 lines_printed++;
 331                 fmout(screenwidth, NULL, listing, NULL, 1, screenheight, -1, 0);
 332                 free(listing);
 333
 334                 lines_printed = 0;
 335         }
 336         scr_printf("\n---\n");
 337         color(BRIGHT_WHITE);
 338
 339
 340 }
 341
 342
 343 void set_keepalives(int s)
 344 {
 345         keepalives_enabled = (char) s;
 346 }
 347
 348 /*
 349  * This loop handles the "keepalive" messages sent to the server when idling.
 350  */
 351
 352 static time_t idlet = 0;
 353 static void really_do_keepalive(void) {
 354         int r;                          /* IPC response code */
 355
 356         time(&idlet);
 357
 358         /* This may sometimes get called before we are actually connected
 359          * to the server.  Don't do anything if we aren't connected. -IO
 360          */
 361         if (!ipc_for_signal_handlers)
 362                 return;
 363
 364         /* If full keepalives are enabled, send a NOOP to the server and
 365          * wait for a response.
 366          */
 367         if (keepalives_enabled == KA_YES) {
 368                 r = CtdlIPCNoop(ipc_for_signal_handlers);
 369                 if (instant_msgs > 0) {
 370                         if (ok_to_interrupt == 1) {
 371                                 scr_printf("\r%64s\r", "");
 372                                 print_instant();
 373                                 scr_printf("%s%c ", room_name,
 374                                        room_prompt(room_flags));
 375                                 scr_flush();
 376                         }
 377                 }
 378         }
 379
 380         /* If half keepalives are enabled, send a QNOP to the server (if the
 381          * server supports it) and then do nothing.
 382          */
 383         if ( (keepalives_enabled == KA_HALF)
 384            && (ipc_for_signal_handlers->ServInfo.supports_qnop > 0) ) {
 385                 CtdlIPC_chat_send(ipc_for_signal_handlers, "QNOP");
 386         }
 387 }
 388
 389 /* threaded nonblocking keepalive stuff starts here. I'm going for a simple
 390    encapsulated interface; in theory there should be no need to touch these
 391    globals outside of the async_ka_* functions. */
 392
 393 #ifdef THREADED_CLIENT
 394 static pthread_t ka_thr_handle;
 395 static int ka_thr_active = 0;
 396 static int async_ka_enabled = 0;
 397
 398 static void *ka_thread(void *arg)
 399 {
 400 #ifdef HAVE_BACKTRACE
 401         char threadName[256];
 402
 403         // Set up our name
 404         sprintf(threadName, "ka_Thread n");
 405
 406         // Register for tracing
 407         eCrash_RegisterThread(threadName, 0);
 408 #endif
 409         really_do_keepalive();
 410         pthread_detach(ka_thr_handle);
 411         ka_thr_active = 0;
 412
 413 #ifdef HAVE_BACKTRACE
 414         eCrash_UnregisterThread();
 415 #endif
 416         return NULL;
 417 }
 418
 419 /* start up a thread to handle a keepalive in the background */
 420 static void async_ka_exec(void)
 421 {
 422         if (!ka_thr_active) {
 423                 ka_thr_active = 1;
 424                 if (pthread_create(&ka_thr_handle, NULL, ka_thread, NULL)) {
 425                         perror("pthread_create");
 426                         exit(1);
 427                 }
 428         }
 429 }
 430 #endif /* THREADED_CLIENT */
 431
 432 /* I changed this from static to not because I need to call it from
 433    screen.c, either that or make something in screen.c not static.
 434    Fix it how you like. Why all the staticness? stu */
 435
 436 void do_keepalive(void)
 437 {
 438         time_t now;
 439
 440         time(&now);
 441         if ((now - idlet) < ((long) S_KEEPALIVE))
 442                 return;
 443
 444         /* Do a space-backspace to keep telnet sessions from idling out */
 445         scr_printf(" %c", 8);
 446         scr_flush();
 447
 448 #ifdef THREADED_CLIENT
 449         if (async_ka_enabled)
 450                 async_ka_exec();
 451         else
 452 #endif
 453                 really_do_keepalive();
 454 }
 455
 456
 457 /* Now the actual async-keepalve API that we expose to higher levels:
 458    async_ka_start() and async_ka_end(). These do nothing when we don't have
 459    threading enabled, so we avoid sprinkling ifdef's throughout the code. */
 460
 461 /* wait for a background keepalive to complete. this must be done before
 462    attempting any further server requests! */
 463 void async_ka_end(void)
 464 {
 465 #ifdef THREADED_CLIENT
 466         if (ka_thr_active)
 467                 pthread_join(ka_thr_handle, NULL);
 468
 469         async_ka_enabled--;
 470 #endif
 471 }
 472
 473 /* tell do_keepalive() that keepalives are asynchronous. */
 474 void async_ka_start(void)
 475 {
 476 #ifdef THREADED_CLIENT
 477         async_ka_enabled++;
 478 #endif
 479 }
 480
 481
 482 int inkey(void)
 483 {                               /* get a character from the keyboard, with   */
 484         int a;                  /* the watchdog timer in effect if necessary */
 485         fd_set rfds;
 486         struct timeval tv;
 487         time_t start_time;
 488
 489         scr_flush();
 490         lines_printed = 0;
 491         time(&start_time);
 492
 493         do {
 494                 /* This loop waits for keyboard input.  If the keepalive
 495                  * timer expires, it sends a keepalive to the server if
 496                  * necessary and then waits again.
 497                  */
 498                 do {
 499                         scr_set_windowsize(ipc_for_signal_handlers);
 500                         do_keepalive();
 501                         scr_set_windowsize(ipc_for_signal_handlers);
 502
 503                         FD_ZERO(&rfds);
 504                         FD_SET(0, &rfds);
 505                         tv.tv_sec = S_KEEPALIVE;
 506                         tv.tv_usec = 0;
 507
 508                         select(1, &rfds, NULL, NULL, &tv);
 509                 } while (!FD_ISSET(0, &rfds));
 510
 511                 /* At this point, there's input, so fetch it.
 512                  * (There's a hole in the bucket...)
 513                  */
 514                 a = scr_getc(SCR_BLOCK);
 515                 if (a == 127) {
 516                         a = 8;
 517                 }
 518                 if (a == 13) {
 519                         a = 10;
 520                 }
 521 /* not so fast there dude, we have to handle UTF-8 and ISO-8859-1...
 522                 if (a > 126) {
 523                         a = 0;
 524                 }
 525                 if (((a != 23) && (a != 4) && (a != 10) && (a != 8) && (a != NEXT_KEY) && (a != STOP_KEY))
 526                     && ((a < 32) || (a > 126))) {
 527                         a = 0;
 528                 }
 529  */
 530         } while (a == 0);
 531         return (a);
 532 }
 533
 534
 535 int yesno(void)
 536 {                               /* Returns 1 for yes, 0 for no */
 537         int a;
 538         while (1) {
 539                 a = inkey();
 540                 a = tolower(a);
 541                 if (a == 'y') {
 542                         scr_printf("Yes\n");
 543                         return (1);
 544                 }
 545                 if (a == 'n') {
 546                         scr_printf("No\n");
 547                         return (0);
 548                 }
 549         }
 550 }
 551
 552 /* Returns 1 for yes, 0 for no, arg is default value */
 553 int yesno_d(int d)
 554 {
 555         int a;
 556         while (1) {
 557                 a = inkey();
 558                 a = tolower(a);
 559                 if (a == 10)
 560                         a = (d ? 'y' : 'n');
 561                 if (a == 'y') {
 562                         scr_printf("Yes\n");
 563                         return (1);
 564                 }
 565                 if (a == 'n') {
 566                         scr_printf("No\n");
 567                         return (0);
 568                 }
 569         }
 570 }
 571
 572
 573
 574
 575 /* Gets a line from the terminal */
 576 /* string == Pointer to string buffer */
 577 /* lim == Maximum length - if negative, no-show */
 578 void ctdl_getline(char *string, int lim)
 579 {
 580         int a, b;
 581         char flag = 0;
 582
 583         if (lim < 0) {
 584                 lim = (0 - lim);
 585                 flag = 1;
 586         }
 587         strcpy(string, "");
 588         gl_string = string;
 589         async_ka_start();
 590
 591 GLA:    a = inkey();
 592         /* a = (a & 127); ** commented out because it isn't just an ASCII world anymore */
 593         if ((a == 8 || a == 23) && (IsEmptyStr(string)))
 594                 goto GLA;
 595         if ((a != 10) && (a != 8) && (strlen(string) == lim))
 596                 goto GLA;
 597         if ((a == 8) && (string[0] != 0)) {
 598                 string[strlen(string) - 1] = 0;
 599                 scr_putc(8); scr_putc(32); scr_putc(8);
 600                 goto GLA;
 601         }
 602         if ((a == 23) && (string[0] != 0)) {
 603                 do {
 604                         string[strlen(string) - 1] = 0;
 605                         scr_putc(8); scr_putc(32); scr_putc(8);
 606                 } while (!IsEmptyStr(string) && string[strlen(string) - 1] != ' ');
 607                 goto GLA;
 608         }
 609         if ((a == 10)) {
 610                 scr_putc(10);
 611                 async_ka_end();
 612                 return;
 613         }
 614         if (a < 32)
 615                 a = '.';
 616         b = strlen(string);
 617         string[b] = a;
 618         string[b + 1] = 0;
 619         if (flag == 0)
 620                 scr_putc(a);
 621         if (flag == 1)
 622                 scr_putc('*');
 623         goto GLA;
 624 }
 625
 626
 627 /*
 628  * strprompt()  -  prompt for a string, print the existing value and
 629  *                 allow the user to press return to keep it...
 630  */
 631 void strprompt(char *prompt, char *str, int len)
 632 {
 633         int i;
 634         char buf[128];
 635
 636         print_instant();
 637         color(DIM_WHITE);
 638         scr_printf("%s ", prompt);
 639         color(DIM_MAGENTA);
 640         scr_printf("[");
 641         color(BRIGHT_MAGENTA);
 642
 643         if (len >= 0) {
 644                 scr_printf("%s", str);
 645         }
 646         else {
 647                 for (i=0; !IsEmptyStr(&str[i]); ++i) {
 648                         scr_printf("*");
 649                 }
 650         }
 651
 652         color(DIM_MAGENTA);
 653         scr_printf("]");
 654         color(DIM_WHITE);
 655         scr_printf(": ");
 656         color(BRIGHT_CYAN);
 657         ctdl_getline(buf, len);
 658         if (buf[0] != 0)
 659                 strcpy(str, buf);
 660         color(DIM_WHITE);
 661 }
 662
 663 /*
 664  * boolprompt()  -  prompt for a yes/no, print the existing value and
 665  *                  allow the user to press return to keep it...
 666  */
 667 int boolprompt(char *prompt, int prev_val)
 668 {
 669         int r;
 670
 671         color(DIM_WHITE);
 672         scr_printf("%s ", prompt);
 673         color(DIM_MAGENTA);
 674         scr_printf("[");
 675         color(BRIGHT_MAGENTA);
 676         scr_printf("%s", (prev_val ? "Yes" : "No"));
 677         color(DIM_MAGENTA);
 678         scr_printf("]: ");
 679         color(BRIGHT_CYAN);
 680         r = (yesno_d(prev_val));
 681         color(DIM_WHITE);
 682         return r;
 683 }
 684
 685 /*
 686  * intprompt()  -  like strprompt(), except for an integer
 687  *                 (note that it RETURNS the new value!)
 688  */
 689 int intprompt(char *prompt, int ival, int imin, int imax)
 690 {
 691         char buf[16];
 692         int i;
 693         int p;
 694
 695         do {
 696                 i = ival;
 697                 snprintf(buf, sizeof buf, "%d", i);
 698                 strprompt(prompt, buf, 15);
 699                 i = atoi(buf);
 700                 for (p=0; !IsEmptyStr(&buf[p]); ++p) {
 701                         if ( (!isdigit(buf[p]))
 702                            && ( (buf[p]!='-') || (p!=0) )  )
 703                                 i = imin - 1;
 704                 }
 705                 if (i < imin)
 706                         scr_printf("*** Must be no less than %d.\n", imin);
 707                 if (i > imax)
 708                         scr_printf("*** Must be no more than %d.\n", imax);
 709         } while ((i < imin) || (i > imax));
 710         return (i);
 711 }
 712
 713 /*
 714  * newprompt()  -  prompt for a string with no existing value
 715  *                 (clears out string buffer first)
 716  */
 717 void newprompt(char *prompt, char *str, int len)
 718 {
 719         color(BRIGHT_MAGENTA);
 720         scr_printf("%s", prompt);
 721         color(DIM_MAGENTA);
 722         ctdl_getline(str, len);
 723         color(DIM_WHITE);
 724 }
 725
 726
 727 int lkey(void)
 728 {                               /* returns a lower case value */
 729         int a;
 730         a = inkey();
 731         if (isupper(a))
 732                 a = tolower(a);
 733         return (a);
 734 }
 735
 736 /*
 737  * parse the citadel.rc file
 738  */
 739 void load_command_set(void)
 740 {
 741         FILE *ccfile;
 742         char buf[1024];
 743         char editor_key[100];
 744         struct citcmd *cptr;
 745         struct citcmd *lastcmd = NULL;
 746         int a, d;
 747         int b = 0;
 748         int i;
 749
 750
 751         /* first, set up some defaults for non-required variables */
 752
 753         for (i = 0; i < MAX_EDITORS; i++)
 754                 strcpy(editor_paths[i], "");
 755         strcpy(printcmd, "");
 756         strcpy(imagecmd, "");
 757         strcpy(rc_username, "");
 758         strcpy(rc_password, "");
 759         rc_floor_mode = 0;
 760         rc_exp_beep = 1;
 761         rc_allow_attachments = 0;
 762         rc_remember_passwords = 0;
 763         strcpy(rc_exp_cmd, "");
 764         rc_display_message_numbers = 0;
 765         rc_force_mail_prompts = 0;
 766         rc_ansi_color = 0;
 767         rc_color_use_bg = 0;
 768         strcpy(rc_url_cmd, "");
 769         strcpy(rc_open_cmd, "");
 770         strcpy(rc_gotmail_cmd, "");
 771 #ifdef HAVE_OPENSSL
 772         rc_encrypt = RC_DEFAULT;
 773 #endif
 774         rc_alt_semantics = 0;
 775
 776         /* now try to open the citadel.rc file */
 777
 778         ccfile = NULL;
 779         if (getenv("HOME") != NULL) {
 780                 snprintf(buf, sizeof buf, "%s/.citadelrc", getenv("HOME"));
 781                 ccfile = fopen(buf, "r");
 782         }
 783         if (ccfile == NULL) {
 784                 ccfile = fopen(file_citadel_rc, "r");
 785         }
 786         if (ccfile == NULL) {
 787                 ccfile = fopen("/etc/citadel.rc", "r");
 788         }
 789         if (ccfile == NULL) {
 790                 ccfile = fopen("./citadel.rc", "r");
 791         }
 792         if (ccfile == NULL) {
 793                 perror("commands: cannot open citadel.rc");
 794                 logoff(NULL, 3);
 795         }
 796         while (fgets(buf, sizeof buf, ccfile) != NULL) {
 797                 while ((!IsEmptyStr(buf)) ? (isspace(buf[strlen(buf) - 1])) : 0)
 798                         buf[strlen(buf) - 1] = 0;
 799
 800                 if (!strncasecmp(buf, "encrypt=", 8)) {
 801                         if (!strcasecmp(&buf[8], "yes")) {
 802 #ifdef HAVE_OPENSSL
 803                                 rc_encrypt = RC_YES;
 804 #else
 805                                 fprintf(stderr, "citadel.rc requires encryption support but citadel is not compiled with OpenSSL");
 806                                 logoff(NULL, 3);
 807 #endif
 808                         }
 809 #ifdef HAVE_OPENSSL
 810                         else if (!strcasecmp(&buf[8], "no")) {
 811                                 rc_encrypt = RC_NO;
 812                         }
 813                         else if (!strcasecmp(&buf[8], "default")) {
 814                                 rc_encrypt = RC_DEFAULT;
 815                         }
 816 #endif
 817                 }
 818
 819                 if (!strncasecmp(buf, "editor=", 7))
 820                         strcpy(editor_paths[0], &buf[7]);
 821
 822                 for (i = 0; i < MAX_EDITORS; i++)
 823                 {
 824                         sprintf(editor_key, "editor%d=", i);
 825                         if (!strncasecmp(buf, editor_key, strlen(editor_key)))
 826                                 strcpy(editor_paths[i], &buf[strlen(editor_key)]);
 827                 }
 828
 829                 if (!strncasecmp(buf, "printcmd=", 9))
 830                         strcpy(printcmd, &buf[9]);
 831
 832                 if (!strncasecmp(buf, "imagecmd=", 9))
 833                         strcpy(imagecmd, &buf[9]);
 834
 835                 if (!strncasecmp(buf, "expcmd=", 7))
 836                         strcpy(rc_exp_cmd, &buf[7]);
 837
 838                 if (!strncasecmp(buf, "local_screen_dimensions=", 24))
 839                         have_xterm = (char) atoi(&buf[24]);
 840
 841                 if (!strncasecmp(buf, "use_floors=", 11)) {
 842                         if (!strcasecmp(&buf[11], "yes"))
 843                                 rc_floor_mode = RC_YES;
 844                         if (!strcasecmp(&buf[11], "no"))
 845                                 rc_floor_mode = RC_NO;
 846                         if (!strcasecmp(&buf[11], "default"))
 847                                 rc_floor_mode = RC_DEFAULT;
 848                 }
 849                 if (!strncasecmp(buf, "beep=", 5)) {
 850                         rc_exp_beep = atoi(&buf[5]);
 851                 }
 852                 if (!strncasecmp(buf, "allow_attachments=", 18)) {
 853                         rc_allow_attachments = atoi(&buf[18]);
 854                 }
 855                 if (!strncasecmp(buf, "idle_threshold=", 15)) {
 856                         rc_idle_threshold = atol(&buf[15]);
 857                 }
 858                 if (!strncasecmp(buf, "remember_passwords=", 19)) {
 859                         rc_remember_passwords = atoi(&buf[19]);
 860                 }
 861                 if (!strncasecmp(buf, "display_message_numbers=", 24)) {
 862                         rc_display_message_numbers = atoi(&buf[24]);
 863                 }
 864                 if (!strncasecmp(buf, "force_mail_prompts=", 19)) {
 865                         rc_force_mail_prompts = atoi(&buf[19]);
 866                 }
 867                 if (!strncasecmp(buf, "ansi_color=", 11)) {
 868                         if (!strncasecmp(&buf[11], "on", 2))
 869                                 rc_ansi_color = 1;
 870                         if (!strncasecmp(&buf[11], "auto", 4))
 871                                 rc_ansi_color = 2;      /* autodetect */
 872                         if (!strncasecmp(&buf[11], "user", 4))
 873                                 rc_ansi_color = 3;      /* user config */
 874                 }
 875                 if (!strncasecmp(buf, "use_background=", 15)) {
 876                         if (!strncasecmp(&buf[15], "on", 2))
 877                                 rc_color_use_bg = 9;
 878                 }
 879                 if (!strncasecmp(buf, "prompt_control=", 15)) {
 880                         if (!strncasecmp(&buf[15], "on", 2))
 881                                 rc_prompt_control = 1;
 882                         if (!strncasecmp(&buf[15], "user", 4))
 883                                 rc_prompt_control = 3;  /* user config */
 884                 }
 885                 if (!strncasecmp(buf, "username=", 9))
 886                         strcpy(rc_username, &buf[9]);
 887
 888                 if (!strncasecmp(buf, "password=", 9))
 889                         strcpy(rc_password, &buf[9]);
 890
 891                 if (!strncasecmp(buf, "urlcmd=", 7))
 892                         strcpy(rc_url_cmd, &buf[7]);
 893
 894                 if (!strncasecmp(buf, "opencmd=", 7))
 895                         strcpy(rc_open_cmd, &buf[8]);
 896
 897                 if (!strncasecmp(buf, "gotmailcmd=", 11))
 898                         strcpy(rc_gotmail_cmd, &buf[11]);
 899
 900                 if (!strncasecmp(buf, "alternate_semantics=", 20)) {
 901                         if (!strncasecmp(&buf[20], "yes", 3)) {
 902                                 rc_alt_semantics = 1;
 903                         }
 904                         else {
 905                                 rc_alt_semantics = 0;
 906                         }
 907                 }
 908
 909                 if (!strncasecmp(buf, "cmd=", 4)) {
 910                         strcpy(buf, &buf[4]);
 911
 912                         cptr = (struct citcmd *) malloc(sizeof(struct citcmd));
 913
 914                         cptr->c_cmdnum = atoi(buf);
 915                         for (d = strlen(buf); d >= 0; --d)
 916                                 if (buf[d] == ',')
 917                                         b = d;
 918                         strcpy(buf, &buf[b + 1]);
 919
 920                         cptr->c_axlevel = atoi(buf);
 921                         for (d = strlen(buf); d >= 0; --d)
 922                                 if (buf[d] == ',')
 923                                         b = d;
 924                         strcpy(buf, &buf[b + 1]);
 925
 926                         for (a = 0; a < 5; ++a)
 927                                 cptr->c_keys[a][0] = 0;
 928
 929                         a = 0;
 930                         b = 0;
 931                         buf[strlen(buf) + 1] = 0;
 932                         while (!IsEmptyStr(buf)) {
 933                                 b = strlen(buf);
 934                                 for (d = strlen(buf); d >= 0; --d)
 935                                         if (buf[d] == ',')
 936                                                 b = d;
 937                                 strncpy(cptr->c_keys[a], buf, b);
 938                                 cptr->c_keys[a][b] = 0;
 939                                 if (buf[b] == ',')
 940                                         strcpy(buf, &buf[b + 1]);
 941                                 else
 942                                         strcpy(buf, "");
 943                                 ++a;
 944                         }
 945
 946                         cptr->next = NULL;
 947                         if (cmdlist == NULL)
 948                                 cmdlist = cptr;
 949                         else
 950                                 lastcmd->next = cptr;
 951                         lastcmd = cptr;
 952                 }
 953         }
 954         fclose(ccfile);
 955 }
 956
 957
 958
 959 /*
 960  * return the key associated with a command
 961  */
 962 char keycmd(char *cmdstr)
 963 {
 964         int a;
 965
 966         for (a = 0; !IsEmptyStr(&cmdstr[a]); ++a)
 967                 if (cmdstr[a] == '&')
 968                         return (tolower(cmdstr[a + 1]));
 969         return (0);
 970 }
 971
 972
 973 /*
 974  * Output the string from a key command without the ampersand
 975  * "mode" should be set to 0 for normal or 1 for <C>ommand key highlighting
 976  */
 977 char *cmd_expand(char *strbuf, int mode)
 978 {
 979         int a;
 980         static char exp[64];
 981         char buf[1024];
 982
 983         strcpy(exp, strbuf);
 984
 985         for (a = 0; exp[a]; ++a) {
 986                 if (strbuf[a] == '&') {
 987
 988                         /* dont echo these non mnemonic command keys */
 989                         int noecho = strbuf[a+1] == '<' || strbuf[a+1] == '>' || strbuf[a+1] == '+' || strbuf[a+1] == '-';
 990
 991                         if (mode == 0) {
 992                                 strcpy(&exp[a], &exp[a + 1 + noecho]);
 993                         }
 994                         if (mode == 1) {
 995                                 exp[a] = '<';
 996                                 strcpy(buf, &exp[a + 2]);
 997                                 exp[a + 2] = '>';
 998                                 exp[a + 3] = 0;
 999                                 strcat(exp, buf);
1000                         }
1001                 }
1002                 if (!strncmp(&exp[a], "^r", 2)) {
1003                         strcpy(buf, exp);
1004                         strcpy(&exp[a], room_name);
1005                         strcat(exp, &buf[a + 2]);
1006                 }
1007                 if (!strncmp(&exp[a], "^c", 2)) {
1008                         exp[a] = ',';
1009                         strcpy(&exp[a + 1], &exp[a + 2]);
1010                 }
1011         }
1012
1013         return (exp);
1014 }
1015
1016
1017
1018 /*
1019  * Comparison function to determine if entered commands match a
1020  * command loaded from the config file.
1021  */
1022 int cmdmatch(char *cmdbuf, struct citcmd *cptr, int ncomp)
1023 {
1024         int a;
1025         int cmdax;
1026
1027         cmdax = 0;
1028         if (is_room_aide)
1029                 cmdax = 1;
1030         if (axlevel >= 6)
1031                 cmdax = 2;
1032
1033         for (a = 0; a < ncomp; ++a) {
1034                 if ((tolower(cmdbuf[a]) != keycmd(cptr->c_keys[a]))
1035                     || (cptr->c_axlevel > cmdax))
1036                         return (0);
1037         }
1038         return (1);
1039 }
1040
1041
1042 /*
1043  * This function returns 1 if a given command requires a string input
1044  */
1045 int requires_string(struct citcmd *cptr, int ncomp)
1046 {
1047         int a;
1048         char buf[64];
1049
1050         strcpy(buf, cptr->c_keys[ncomp - 1]);
1051         for (a = 0; !IsEmptyStr(&buf[a]); ++a) {
1052                 if (buf[a] == ':')
1053                         return (1);
1054         }
1055         return (0);
1056 }
1057
1058
1059 /*
1060  * Input a command at the main prompt.
1061  * This function returns an integer command number.  If the command prompts
1062  * for a string then it is placed in the supplied buffer.
1063  */
1064 int getcmd(CtdlIPC *ipc, char *argbuf)
1065 {
1066         char cmdbuf[5];
1067         int cmdspaces[5];
1068         int cmdpos;
1069         int ch;
1070         int a;
1071         int got;
1072         int this_lazy_cmd;
1073         struct citcmd *cptr;
1074
1075         /*
1076          * Starting a new command now, so set sigcaught to 0.  This variable
1077          * is set to nonzero (usually NEXT_KEY or STOP_KEY) if a command has
1078          * been interrupted by a keypress.
1079          */
1080         sigcaught = 0;
1081
1082         /* Switch color support on or off if we're in user mode */
1083         if (rc_ansi_color == 3) {
1084                 if (userflags & US_COLOR)
1085                         enable_color = 1;
1086                 else
1087                         enable_color = 0;
1088         }
1089         /* if we're running in idiot mode, display a cute little menu */
1090         IFNEXPERT formout(ipc, "mainmenu");
1091
1092         print_instant();
1093         strcpy(argbuf, "");
1094         cmdpos = 0;
1095         for (a = 0; a < 5; ++a)
1096                 cmdbuf[a] = 0;
1097         /* now the room prompt... */
1098         ok_to_interrupt = 1;
1099         color(BRIGHT_WHITE);
1100         scr_printf("\n%s", room_name);
1101         color(DIM_WHITE);
1102         scr_printf("%c ", room_prompt(room_flags));
1103         scr_flush();
1104
1105         while (1) {
1106                 ch = inkey();
1107                 ok_to_interrupt = 0;
1108
1109                 /* Handle the backspace key, but only if there's something
1110                  * to backspace over...
1111                  */
1112                 if ((ch == 8) && (cmdpos > 0)) {
1113                         back(cmdspaces[cmdpos - 1] + 1);
1114                         cmdbuf[cmdpos] = 0;
1115                         --cmdpos;
1116                 }
1117                 /* Spacebar invokes "lazy traversal" commands */
1118                 if ((ch == 32) && (cmdpos == 0)) {
1119                         this_lazy_cmd = next_lazy_cmd;
1120                         if (this_lazy_cmd == 13)
1121                                 next_lazy_cmd = 5;
1122                         if (this_lazy_cmd == 5)
1123                                 next_lazy_cmd = 13;
1124                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1125                                 if (cptr->c_cmdnum == this_lazy_cmd) {
1126                                         for (a = 0; a < 5; ++a)
1127                                                 if (cptr->c_keys[a][0] != 0)
1128                                                         scr_printf("%s ", cmd_expand(
1129                                                                                         cptr->c_keys[a], 0));
1130                                         scr_printf("\n");
1131                                         return (this_lazy_cmd);
1132                                 }
1133                         }
1134                         scr_printf("\n");
1135                         return (this_lazy_cmd);
1136                 }
1137                 /* Otherwise, process the command */
1138                 cmdbuf[cmdpos] = tolower(ch);
1139
1140                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1141                         if (cmdmatch(cmdbuf, cptr, cmdpos + 1)) {
1142
1143                                 scr_printf("%s", cmd_expand(cptr->c_keys[cmdpos], 0));
1144                                 cmdspaces[cmdpos] = strlen(
1145                                     cmd_expand(cptr->c_keys[cmdpos], 0));
1146                                 if (cmdpos < 4)
1147                                         if ((cptr->c_keys[cmdpos + 1]) != 0)
1148                                                 scr_putc(' ');
1149                                 ++cmdpos;
1150                         }
1151                 }
1152
1153                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1154                         if (cmdmatch(cmdbuf, cptr, 5)) {
1155                                 /* We've found our command. */
1156                                 if (requires_string(cptr, cmdpos)) {
1157                                         ctdl_getline(argbuf, 64);
1158                                 } else {
1159                                         scr_printf("\n");
1160                                 }
1161
1162                                 /* If this command is one that changes rooms,
1163                                  * then the next lazy-command (space bar)
1164                                  * should be "read new" instead of "goto"
1165                                  */
1166                                 if ((cptr->c_cmdnum == 5)
1167                                     || (cptr->c_cmdnum == 6)
1168                                     || (cptr->c_cmdnum == 47)
1169                                     || (cptr->c_cmdnum == 52)
1170                                     || (cptr->c_cmdnum == 16)
1171                                     || (cptr->c_cmdnum == 20))
1172                                         next_lazy_cmd = 13;
1173
1174                                 /* If this command is "read new"
1175                                  * then the next lazy-command (space bar)
1176                                  * should be "goto"
1177                                  */
1178                                 if (cptr->c_cmdnum == 13)
1179                                         next_lazy_cmd = 5;
1180
1181                                 return (cptr->c_cmdnum);
1182
1183                         }
1184                 }
1185
1186                 if (ch == '?') {
1187                         pprintf("\rOne of ...                         \n");
1188                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1189                                 if (cmdmatch(cmdbuf, cptr, cmdpos)) {
1190                                         for (a = 0; a < 5; ++a) {
1191                                            keyopt(cmd_expand(cptr->c_keys[a], 1));
1192                                    pprintf(" ");
1193                                         }
1194                                         pprintf("\n");
1195                                 }
1196                         }
1197                 sigcaught = 0;
1198
1199                         pprintf("\n%s%c ", room_name, room_prompt(room_flags));
1200                         got = 0;
1201                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1202                                 if ((got == 0) && (cmdmatch(cmdbuf, cptr, cmdpos))) {
1203                                         for (a = 0; a < cmdpos; ++a) {
1204                                                 pprintf("%s ",
1205                                                        cmd_expand(cptr->c_keys[a], 0));
1206                                         }
1207                                         got = 1;
1208                                 }
1209                         }
1210                 }
1211         }
1212
1213 }
1214
1215
1216
1217
1218
1219 /*
1220  * set tty modes.  commands are:
1221  *
1222  * 01- set to Citadel mode
1223  * 2 - save current settings for later restoral
1224  * 3 - restore saved settings
1225  */
1226 #ifdef HAVE_TERMIOS_H
1227 void stty_ctdl(int cmd)
1228 {                               /* SysV version of stty_ctdl() */
1229         struct termios live;
1230         static struct termios saved_settings;
1231         static int last_cmd = 0;
1232
1233         if (cmd == SB_LAST)
1234                 cmd = last_cmd;
1235         else
1236                 last_cmd = cmd;
1237
1238         if ((cmd == 0) || (cmd == 1)) {
1239                 tcgetattr(0, &live);
1240                 live.c_iflag = ISTRIP | IXON | IXANY;
1241                 live.c_oflag = OPOST | ONLCR;
1242                 live.c_lflag = ISIG | NOFLSH;
1243
1244                 live.c_cc[VINTR] = 0;
1245                 live.c_cc[VQUIT] = 0;
1246
1247 #ifdef hpux
1248                 live.c_cc[VMIN] = 0;
1249                 live.c_cc[VTIME] = 0;
1250 #endif
1251
1252                 /* do we even need this stuff anymore? */
1253                 /* live.c_line=0; */
1254                 live.c_cc[VERASE] = 8;
1255                 live.c_cc[VKILL] = 24;
1256                 live.c_cc[VEOF] = 1;
1257                 live.c_cc[VEOL] = 255;
1258                 live.c_cc[VEOL2] = 0;
1259                 live.c_cc[VSTART] = 0;
1260                 tcsetattr(0, TCSADRAIN, &live);
1261         }
1262         if (cmd == 2) {
1263                 tcgetattr(0, &saved_settings);
1264         }
1265         if (cmd == 3) {
1266                 tcsetattr(0, TCSADRAIN, &saved_settings);
1267         }
1268
1269 }
1270 #else
1271 void stty_ctdl(int cmd)
1272 {                               /* BSD version of stty_ctdl() */
1273         struct sgttyb live;
1274         static struct sgttyb saved_settings;
1275         static int last_cmd = 0;
1276
1277         if (cmd == SB_LAST)
1278                 cmd = last_cmd;
1279         else
1280                 last_cmd = cmd;
1281
1282         if ((cmd == 0) || (cmd == 1)) {
1283                 gtty(0, &live);
1284                 live.sg_flags |= CBREAK;
1285                 live.sg_flags |= CRMOD;
1286                 live.sg_flags |= NL1;
1287                 live.sg_flags &= ~ECHO;
1288                 if (cmd == 1)
1289                         live.sg_flags |= NOFLSH;
1290                 stty(0, &live);
1291         }
1292         if (cmd == 2) {
1293                 gtty(0, &saved_settings);
1294         }
1295         if (cmd == 3) {
1296                 stty(0, &saved_settings);
1297         }
1298 }
1299 #endif
1300
1301
1302 /*
1303  * display_help()  -  help file viewer
1304  */
1305 void display_help(CtdlIPC *ipc, char *name)
1306 {
1307         formout(ipc, name);
1308 }
1309
1310
1311 /*
1312  * fmout() - Citadel text formatter and paginator
1313  */
1314 int fmout(
1315         int width,      /* screen width to use */
1316         FILE *fpin,     /* file to read from, or NULL to format given text */
1317         char *text,     /* text to be formatted (when fpin is NULL */
1318         FILE *fpout,    /* file to write to, or NULL to write to screen */
1319         char pagin,     /* nonzero if we should use the paginator */
1320         int height,     /* screen height to use */
1321         int starting_lp,/* starting value for lines_printed, -1 for global */
1322         int subst)      /* nonzero if we should use hypertext mode */
1323 {
1324         char *buffer = NULL;    /* The current message */
1325         char *word = NULL;      /* What we are about to actually print */
1326         char *e;                /* Pointer to position in text */
1327         char old = 0;           /* The previous character */
1328         int column = 0;         /* Current column */
1329         size_t i;               /* Generic counter */
1330
1331         /* Space for a single word, which can be at most screenwidth */
1332         word = (char *)calloc(1, width);
1333         if (!word) {
1334                 scr_printf("Can't alloc memory to print message: %s!\n",
1335                                 strerror(errno));
1336                 logoff(NULL, 3);
1337         }
1338
1339         /* Read the entire message body into memory */
1340         if (fpin) {
1341                 buffer = load_message_from_file(fpin);
1342                 if (!buffer) {
1343                         scr_printf("Can't print message: %s!\n",
1344                                         strerror(errno));
1345                         logoff(NULL, 3);
1346                 }
1347         } else {
1348                 buffer = text;
1349         }
1350         e = buffer;
1351
1352         if (starting_lp >= 0)
1353                 lines_printed = starting_lp;
1354
1355         /* Run the message body */
1356         while (*e) {
1357                 /* Catch characters that shouldn't be there at all */
1358                 if (*e == '\r') {
1359                         e++;
1360                         continue;
1361                 }
1362                 /* First, are we looking at a newline? */
1363                 if (*e == '\n') {
1364                         e++;
1365                         if (*e == ' ') {        /* Paragraph */
1366                                 if (fpout) {
1367                                         fprintf(fpout, "\n");
1368                                 } else {
1369                                         scr_printf("\n");
1370                                         ++lines_printed;
1371                                         lines_printed = checkpagin(lines_printed, pagin, height);
1372                                 }
1373                                 column = 0;
1374                         } else if (old != ' ') {/* Don't print two spaces */
1375                                 if (fpout) {
1376                                         fprintf(fpout, " ");
1377                                 } else {
1378                                         scr_printf(" ");
1379                                 }
1380                                 column++;
1381                         }
1382                         old = '\n';
1383                         continue;
1384                 }
1385
1386                 /* Are we looking at a nonprintable?
1387                  * (This section is now commented out because we could be displaying
1388                  * a character set like UTF-8 or ISO-8859-1.)
1389                 if ( (*e < 32) || (*e > 126) ) {
1390                         e++;
1391                         continue;
1392                 } */
1393
1394                 /* Or are we looking at a space? */
1395                 if (*e == ' ') {
1396                         e++;
1397                         if (column >= width - 1) {
1398                                 /* Are we in the rightmost column? */
1399                                 if (fpout) {
1400                                         fprintf(fpout, "\n");
1401                                 } else {
1402                                         scr_printf("\n");
1403                                         ++lines_printed;
1404                                         lines_printed = checkpagin(lines_printed, pagin, height);
1405                                 }
1406                                 column = 0;
1407                         } else if (!(column == 0 && old == ' ')) {
1408                                 /* Eat only the first space on a line */
1409                                 if (fpout) {
1410                                         fprintf(fpout, " ");
1411                                 } else {
1412                                         scr_printf(" ");
1413                                 }
1414                                 column++;
1415                         }
1416                         /* ONLY eat the FIRST space on a line */
1417                         old = ' ';
1418                         continue;
1419                 }
1420                 old = *e;
1421
1422                 /* Read a word, slightly messy */
1423                 i = 0;
1424                 while (e[i]) {
1425                         if (!isprint(e[i]) && !isspace(e[i]))
1426                                 e[i] = ' ';
1427                         if (isspace(e[i]))
1428                                 break;
1429                         i++;
1430                 }
1431
1432                 /* We should never see these, but... slightly messy */
1433                 if (e[i] == '\t' || e[i] == '\f' || e[i] == '\v')
1434                         e[i] = ' ';
1435
1436                 /* Break up really long words */
1437                 /* TODO: auto-hyphenation someday? */
1438                 if (i >= width)
1439                         i = width - 1;
1440                 strncpy(word, e, i);
1441                 word[i] = 0;
1442
1443                 /* Decide where to print the word */
1444                 if (column + i >= width) {
1445                         /* Wrap to the next line */
1446                         if (fpout) {
1447                                 fprintf(fpout, "\n");
1448                         } else {
1449                                 scr_printf("\n");
1450                                 ++lines_printed;
1451                                 lines_printed = checkpagin(lines_printed, pagin, height);
1452                         }
1453                         column = 0;
1454                 }
1455
1456                 /* Print the word */
1457                 if (fpout) {
1458                         fprintf(fpout, "%s", word);
1459                 } else {
1460                         scr_printf("%s", word);
1461                 }
1462                 column += i;
1463                 e += i;         /* Start over with the whitepsace! */
1464         }
1465
1466         free(word);
1467         if (fpin)               /* We allocated this, remember? */
1468                 free(buffer);
1469
1470         /* Is this necessary?  It makes the output kind of spacey. */
1471         if (fpout) {
1472                 fprintf(fpout, "\n");
1473         } else {
1474                 scr_printf("\n");
1475                 ++lines_printed;
1476                 lines_printed = checkpagin(lines_printed, pagin, height);
1477         }
1478
1479         return sigcaught;
1480 }
1481
1482
1483 /*
1484  * support ANSI color if defined
1485  */
1486 void color(int colornum)
1487 {
1488         static int hold_color;
1489         static int current_color;
1490
1491         if (colornum == COLOR_PUSH) {
1492                 hold_color = current_color;
1493                 return;
1494         }
1495
1496         if (colornum == COLOR_POP) {
1497                 color(hold_color);
1498                 return;
1499         }
1500
1501         current_color = colornum;
1502         if (enable_color) {
1503                 /* When switching to dim white, actually output an 'original
1504                  * pair' sequence -- this looks better on black-on-white
1505                  * terminals. - Changed to ORIGINAL_PAIR as this actually
1506                  * wound up looking horrible on black-on-white terminals, not
1507                  * to mention transparent terminals.
1508                  */
1509                 if (colornum == ORIGINAL_PAIR)
1510                         printf("\033[0;39;49m");
1511                 else
1512                         printf("\033[%d;3%d;4%dm",
1513                                         (colornum & 8) ? 1 : 0,
1514                                         (colornum & 7),
1515                                         rc_color_use_bg);
1516
1517                 scr_flush();
1518         }
1519 }
1520
1521 void cls(int colornum)
1522 {
1523         if (enable_color) {
1524                 printf("\033[4%dm\033[2J\033[H\033[0m",
1525                                 colornum ? colornum : rc_color_use_bg);
1526                 scr_flush();
1527         }
1528 }
1529
1530
1531 /*
1532  * Detect whether ANSI color is available (answerback)
1533  */
1534 void send_ansi_detect(void)
1535 {
1536         if (rc_ansi_color == 2) {
1537                 printf("\033[c");
1538                 scr_flush();
1539                 time(&AnsiDetect);
1540         }
1541 }
1542
1543 void look_for_ansi(void)
1544 {
1545         fd_set rfds;
1546         struct timeval tv;
1547         char abuf[512];
1548         time_t now;
1549         int a, rv;
1550
1551         if (rc_ansi_color == 0) {
1552                 enable_color = 0;
1553         } else if (rc_ansi_color == 1) {
1554                 enable_color = 1;
1555         } else if (rc_ansi_color == 2) {
1556
1557                 /* otherwise, do the auto-detect */
1558
1559                 strcpy(abuf, "");
1560
1561                 time(&now);
1562                 if ((now - AnsiDetect) < 2)
1563                         sleep(1);
1564
1565                 do {
1566                         FD_ZERO(&rfds);
1567                         FD_SET(0, &rfds);
1568                         tv.tv_sec = 0;
1569                         tv.tv_usec = 1;
1570
1571                         select(1, &rfds, NULL, NULL, &tv);
1572                         if (FD_ISSET(0, &rfds)) {
1573                                 abuf[strlen(abuf) + 1] = 0;
1574                                 rv = read(0, &abuf[strlen(abuf)], 1);
1575                         }
1576                 } while (FD_ISSET(0, &rfds));
1577
1578                 for (a = 0; !IsEmptyStr(&abuf[a]); ++a) {
1579                         if ((abuf[a] == 27) && (abuf[a + 1] == '[')
1580                             && (abuf[a + 2] == '?')) {
1581                                 enable_color = 1;
1582                         }
1583                 }
1584         }
1585 }
1586
1587
1588 /*
1589  * Display key options (highlight hotkeys inside angle brackets)
1590  */
1591 void keyopt(char *buf) {
1592         int i;
1593
1594         color(DIM_WHITE);
1595         for (i=0; !IsEmptyStr(&buf[i]); ++i) {
1596                 if (buf[i]=='<') {
1597                         pprintf("%c", buf[i]);
1598                         color(BRIGHT_MAGENTA);
1599                 } else {
1600                         if (buf[i]=='>'&& buf[i+1] != '>') {
1601                                 color(DIM_WHITE);
1602                         }
1603                         pprintf("%c", buf[i]);
1604                 }
1605         }
1606         color(DIM_WHITE);
1607 }
1608
1609
1610
1611 /*
1612  * Present a key-menu line choice type of thing
1613  */
1614 char keymenu(char *menuprompt, char *menustring) {
1615         int i, c, a;
1616         int choices;
1617         int do_prompt = 0;
1618         char buf[1024];
1619         int ch;
1620         int display_prompt = 1;
1621
1622         choices = num_tokens(menustring, '|');
1623
1624         if (menuprompt != NULL) do_prompt = 1;
1625         if ((menuprompt != NULL) && (IsEmptyStr(menuprompt))) do_prompt = 0;
1626
1627         while (1) {
1628                 if (display_prompt) {
1629                         if (do_prompt) {
1630                                 scr_printf("%s ", menuprompt);
1631                         }
1632                         else {
1633                                 for (i=0; i<choices; ++i) {
1634                                         extract_token(buf, menustring, i, '|', sizeof buf);
1635                                         keyopt(buf);
1636                                         scr_printf(" ");
1637                                 }
1638                         }
1639                         scr_printf("-> ");
1640                         display_prompt = 0;
1641                 }
1642                 ch = lkey();
1643
1644                 if ( (do_prompt) && (ch=='?') ) {
1645                         scr_printf("\rOne of...                               ");
1646                         scr_printf("                                      \n");
1647                         for (i=0; i<choices; ++i) {
1648                                 extract_token(buf, menustring, i, '|', sizeof buf);
1649                                 scr_printf("   ");
1650                                 keyopt(buf);
1651                                 scr_printf("\n");
1652                         }
1653                         scr_printf("\n");
1654                         display_prompt = 1;
1655                 }
1656
1657                 for (i=0; i<choices; ++i) {
1658                         extract_token(buf, menustring, i, '|', sizeof buf);
1659                         for (c=1; !IsEmptyStr(&buf[c]); ++c) {
1660                                 if ( (ch == tolower(buf[c]))
1661                                    && (buf[c-1]=='<')
1662                                    && (buf[c+1]=='>') ) {
1663                                         for (a=0; !IsEmptyStr(&buf[a]); ++a) {
1664                                                 if ( (a!=(c-1)) && (a!=(c+1))) {
1665                                                         scr_putc(buf[a]);
1666                                                 }
1667                                         }
1668                                         scr_printf("\n");
1669                                         return ch;
1670                                 }
1671                         }
1672                 }
1673         }
1674 }