citadel/commands.c

   1 /*
   2  * $Id$
   3  *
   4  * This file contains functions which implement parts of the
   5  * text-mode user interface.
   6  *
   7  */
   8
   9 #include "sysdep.h"
  10 #include <stdlib.h>
  11 #include <unistd.h>
  12 #include <stdio.h>
  13 #include <fcntl.h>
  14 #include <ctype.h>
  15 #include <string.h>
  16 #include <sys/types.h>
  17
  18 #if TIME_WITH_SYS_TIME
  19 # include <sys/time.h>
  20 # include <time.h>
  21 #else
  22 # if HAVE_SYS_TIME_H
  23 #  include <sys/time.h>
  24 # else
  25 #  include <time.h>
  26 # endif
  27 #endif
  28
  29 #ifdef HAVE_TERMIOS_H
  30 #include <termios.h>
  31 #else
  32 #include <sgtty.h>
  33 #endif
  34
  35 #ifdef HAVE_SYS_SELECT_H
  36 #include <sys/select.h>
  37 #endif
  38
  39 #ifdef THREADED_CLIENT
  40 #include <pthread.h>
  41 #endif
  42
  43 #include <signal.h>
  44 #include <errno.h>
  45 #include <stdarg.h>
  46 #include "citadel.h"
  47 #include "commands.h"
  48 #include "messages.h"
  49 #include "citadel_decls.h"
  50 #include "routines.h"
  51 #include "routines2.h"
  52 #include "tools.h"
  53 #include "rooms.h"
  54 #include "client_chat.h"
  55 #ifndef HAVE_SNPRINTF
  56 #include "snprintf.h"
  57 #endif
  58
  59 struct citcmd {
  60         struct citcmd *next;
  61         int c_cmdnum;
  62         int c_axlevel;
  63         char c_keys[5][64];
  64 };
  65
  66 #define IFNEXPERT if ((userflags&US_EXPERT)==0)
  67
  68
  69 int rc_exp_beep;
  70 char rc_exp_cmd[1024];
  71 int rc_allow_attachments;
  72 int rc_display_message_numbers;
  73 int rc_force_mail_prompts;
  74 int rc_remember_passwords;
  75 int rc_ansi_color;
  76 int num_urls = 0;
  77 char urls[MAXURLS][SIZ];
  78 char rc_url_cmd[SIZ];
  79
  80 char *gl_string;
  81 int next_lazy_cmd = 5;
  82
  83 int lines_printed = 0;          /* line count for paginator */
  84 extern int screenwidth, screenheight;
  85 extern int termn8;
  86
  87 struct citcmd *cmdlist = NULL;
  88
  89
  90 /* these variables are local to this module */
  91 char keepalives_enabled = KA_YES;       /* send NOOPs to server when idle */
  92 int ok_to_interrupt = 0;                /* print express msgs asynchronously */
  93 time_t AnsiDetect;                      /* when did we send the detect code? */
  94 int enable_color = 0;                   /* nonzero for ANSI color */
  95
  96
  97
  98
  99 /*
 100  * If an interesting key has been pressed, return its value, otherwise 0
 101  */
 102 char was_a_key_pressed(void) {
 103         fd_set rfds;
 104         struct timeval tv;
 105         int the_character;
 106         int retval;
 107
 108         FD_ZERO(&rfds);
 109         FD_SET(0, &rfds);
 110         tv.tv_sec = 0;
 111         tv.tv_usec = 0;
 112         retval = select(1, &rfds, NULL, NULL, &tv);
 113
 114         /* Careful!  Disable keepalives during keyboard polling; we're probably
 115          * in the middle of a data transfer from the server, in which case
 116          * sending a NOOP would throw the client protocol out of sync.
 117          */
 118         if (FD_ISSET(0, &rfds)) {
 119                 set_keepalives(KA_NO);
 120                 the_character = inkey();
 121                 set_keepalives(KA_YES);
 122         }
 123         else {
 124                 the_character = 0;
 125         }
 126         return(the_character);
 127 }
 128
 129
 130
 131
 132
 133 /*
 134  * Check to see if we need to pause at the end of a screen.
 135  * If we do, we have to disable server keepalives during the pause because
 136  * we are probably in the middle of a server operation and the NOOP command
 137  * would confuse everything.
 138  */
 139 int checkpagin(int lp, int pagin, int height)
 140 {
 141         int thekey;
 142
 143         if (sigcaught) return(lp);
 144         thekey = was_a_key_pressed();
 145         if ( (thekey == NEXT_KEY) || (thekey == STOP_KEY)) sigcaught = thekey;
 146         if (sigcaught) return(lp);
 147
 148         if (!pagin) return(0);
 149         if (lp>=(height-1)) {
 150                 set_keepalives(KA_NO);
 151                 hit_any_key();
 152                 set_keepalives(KA_YES);
 153                 return(0);
 154         }
 155         return(lp);
 156 }
 157
 158
 159
 160
 161 /*
 162  * pprintf()  ...   paginated version of printf()
 163  */
 164 void pprintf(const char *format, ...) {
 165         va_list arg_ptr;
 166         static char buf[4096];  /* static for performance, change if needed */
 167         int i;
 168
 169         /* If sigcaught is nonzero, a keypress has interrupted this and we
 170          * should just drain output.
 171          */
 172         if (sigcaught) return;
 173
 174         /* Otherwise, start spewing... */
 175         va_start(arg_ptr, format);
 176         vsprintf(buf, format, arg_ptr);
 177         va_end(arg_ptr);
 178
 179         for (i=0; i<strlen(buf); ++i) {
 180                 putc(buf[i], stdout);
 181                 if (buf[i]==10) {
 182                         ++lines_printed;
 183                         lines_printed = checkpagin(lines_printed,
 184                                 (userflags & US_PAGINATOR),
 185                                 screenheight);
 186                 }
 187         }
 188 }
 189
 190
 191
 192 /*
 193  * print_express()  -  print express messages if there are any
 194  */
 195 void print_express(void)
 196 {
 197         char buf[1024];
 198         FILE *outpipe;
 199         time_t timestamp;
 200         struct tm *stamp;
 201         int flags = 0;
 202         char sender[64];
 203         char node[64];
 204
 205         if (express_msgs == 0)
 206                 return;
 207
 208         if (rc_exp_beep) {
 209                 putc(7, stdout);
 210         }
 211         if (strlen(rc_exp_cmd) == 0) {
 212                 color(BRIGHT_RED);
 213                 printf("\r---");
 214         }
 215
 216         while (express_msgs != 0) {
 217                 serv_puts("GEXP");
 218                 serv_gets(buf);
 219                 if (buf[0] != '1')
 220                         return;
 221
 222                 express_msgs = extract_int(&buf[4], 0);
 223                 timestamp = extract_long(&buf[4], 1);
 224                 flags = extract_int(&buf[4], 2);
 225                 extract(sender, &buf[4], 3);
 226                 extract(node, &buf[4], 4);
 227                 strcpy(last_paged, sender);
 228
 229                 stamp = localtime(&timestamp);
 230
 231                 /* If the page is a Logoff Request, honor it. */
 232                 if (flags & 2) {
 233                         termn8 = 1;
 234                         return;
 235                 }
 236
 237                 if (strlen(rc_exp_cmd) > 0) {
 238                         outpipe = popen(rc_exp_cmd, "w");
 239                         if (outpipe != NULL) {
 240                                 /* Header derived from flags */
 241                                 if (flags & 2)
 242                                         fprintf(outpipe,
 243                                                "Please log off now, as requested ");
 244                                 else if (flags & 1)
 245                                         fprintf(outpipe, "Broadcast message ");
 246                                 else if (flags & 4)
 247                                         fprintf(outpipe, "Chat request ");
 248                                 else
 249                                         fprintf(outpipe, "Message ");
 250                                 /* Timestamp.  Can this be improved? */
 251                                 if (stamp->tm_hour == 0 || stamp->tm_hour == 12)
 252                                         fprintf(outpipe, "at 12:%02d%cm",
 253                                                 stamp->tm_min,
 254                                                 stamp->tm_hour ? 'p' : 'a');
 255                                 else if (stamp->tm_hour > 12)           /* pm */
 256                                         fprintf(outpipe, "at %d:%02dpm",
 257                                                 stamp->tm_hour - 12,
 258                                                 stamp->tm_min);
 259                                 else                                    /* am */
 260                                         fprintf(outpipe, "at %d:%02dam",
 261                                                 stamp->tm_hour, stamp->tm_min);
 262                                 fprintf(outpipe, " from %s", sender);
 263                                 if (strncmp(serv_info.serv_nodename, node, 32))
 264                                         fprintf(outpipe, " @%s", node);
 265                                 fprintf(outpipe, ":\n");
 266                                 while (serv_gets(buf), strcmp(buf, "000")) {
 267                                         fprintf(outpipe, "%s\n", buf);
 268                                 }
 269                                 pclose(outpipe);
 270                                 if (express_msgs == 0)
 271                                         return;
 272                                 continue;
 273                         }
 274                 }
 275                 /* fall back to built-in express message display */
 276                 printf("\n");
 277
 278                 /* Header derived from flags */
 279                 if (flags & 2)
 280                         printf("Please log off now, as requested ");
 281                 else if (flags & 1)
 282                         printf("Broadcast message ");
 283                 else if (flags & 4)
 284                         printf("Chat request ");
 285                 else
 286                         printf("Message ");
 287
 288                 /* Timestamp.  Can this be improved? */
 289                 if (stamp->tm_hour == 0 || stamp->tm_hour == 12)/* 12am/12pm */
 290                         printf("at 12:%02d%cm", stamp->tm_min,
 291                                 stamp->tm_hour ? 'p' : 'a');
 292                 else if (stamp->tm_hour > 12)                   /* pm */
 293                         printf("at %d:%02dpm",
 294                                 stamp->tm_hour - 12, stamp->tm_min);
 295                 else                                            /* am */
 296                         printf("at %d:%02dam", stamp->tm_hour, stamp->tm_min);
 297
 298                 /* Sender */
 299                 printf(" from %s", sender);
 300
 301                 /* Remote node, if any */
 302                 if (strncmp(serv_info.serv_nodename, node, 32))
 303                         printf(" @%s", node);
 304
 305                 printf(":\n");
 306
 307                 while (serv_gets(buf), strcmp(buf, "000")) {
 308                         printf("%s", buf);
 309                 }
 310         }
 311         printf("\n---\n");
 312         color(BRIGHT_WHITE);
 313
 314
 315 }
 316
 317
 318 void set_keepalives(int s)
 319 {
 320         keepalives_enabled = (char) s;
 321 }
 322
 323 /*
 324  * This loop handles the "keepalive" messages sent to the server when idling.
 325  */
 326
 327 static time_t idlet = 0;
 328 static void really_do_keepalive(void) {
 329         char buf[1024];
 330
 331         time(&idlet);
 332         if (keepalives_enabled == KA_YES) {
 333                 serv_puts("NOOP");
 334                 serv_gets(buf);
 335                 if (buf[3] == '*') {
 336                         express_msgs = 1;
 337                         if (ok_to_interrupt == 1) {
 338                                 printf("\r%64s\r", "");
 339                                 print_express();
 340                                 printf("%s%c ", room_name,
 341                                        room_prompt(room_flags));
 342                                 fflush(stdout);
 343                         }
 344                 }
 345         }
 346 }
 347
 348 /* threaded nonblocking keepalive stuff starts here. I'm going for a simple
 349    encapsulated interface; in theory there should be no need to touch these
 350    globals outside of the async_ka_* functions. */
 351
 352 #ifdef THREADED_CLIENT
 353 static pthread_t ka_thr_handle;
 354 static int ka_thr_active = 0;
 355 static int async_ka_enabled = 0;
 356
 357 static void *ka_thread(void *arg)
 358 {
 359         really_do_keepalive();
 360         pthread_detach(ka_thr_handle);
 361         ka_thr_active = 0;
 362         return NULL;
 363 }
 364
 365 /* start up a thread to handle a keepalive in the background */
 366 static void async_ka_exec(void)
 367 {
 368         if (!ka_thr_active) {
 369                 ka_thr_active = 1;
 370                 if (pthread_create(&ka_thr_handle, NULL, ka_thread, NULL)) {
 371                         perror("pthread_create");
 372                         exit(1);
 373                 }
 374         }
 375 }
 376 #endif /* THREADED_CLIENT */
 377
 378 static void do_keepalive(void)
 379 {
 380         time_t now;
 381
 382         time(&now);
 383         if ((now - idlet) < ((long) S_KEEPALIVE))
 384                 return;
 385
 386         /* Do a space-backspace to keep telnet sessions from idling out */
 387         printf(" %c", 8);
 388         fflush(stdout);
 389
 390 #ifdef THREADED_CLIENT
 391         if (async_ka_enabled)
 392                 async_ka_exec();
 393         else
 394 #endif
 395                 really_do_keepalive();
 396 }
 397
 398
 399 /* Now the actual async-keepalve API that we expose to higher levels:
 400    async_ka_start() and async_ka_end(). These do nothing when we don't have
 401    threading enabled, so we avoid sprinkling ifdef's throughout the code. */
 402
 403 /* wait for a background keepalive to complete. this must be done before
 404    attempting any further server requests! */
 405 void async_ka_end(void)
 406 {
 407 #ifdef THREADED_CLIENT
 408         if (ka_thr_active)
 409                 pthread_join(ka_thr_handle, NULL);
 410
 411         async_ka_enabled--;
 412 #endif
 413 }
 414
 415 /* tell do_keepalive() that keepalives are asynchronous. */
 416 void async_ka_start(void)
 417 {
 418 #ifdef THREADED_CLIENT
 419         async_ka_enabled++;
 420 #endif
 421 }
 422
 423
 424 int inkey(void)
 425 {                               /* get a character from the keyboard, with   */
 426         int a;                  /* the watchdog timer in effect if necessary */
 427         fd_set rfds;
 428         struct timeval tv;
 429         time_t start_time, now;
 430         char inbuf[2];
 431
 432         fflush(stdout);
 433         lines_printed = 0;
 434         time(&start_time);
 435
 436         do {
 437
 438                 /* This loop waits for keyboard input.  If the keepalive
 439                  * timer expires, it sends a keepalive to the server if
 440                  * necessary and then waits again.
 441                  */
 442                 do {
 443                         do_keepalive();
 444
 445                         FD_ZERO(&rfds);
 446                         FD_SET(0, &rfds);
 447                         tv.tv_sec = S_KEEPALIVE;
 448                         tv.tv_usec = 0;
 449
 450                         time(&now);
 451                         select(1, &rfds, NULL, NULL, &tv);
 452                 } while (!FD_ISSET(0, &rfds));
 453
 454
 455
 456
 457                 /* At this point, there's input, so fetch it.
 458                  * (There's a hole in the bucket...)
 459                  */
 460                 read(0, inbuf, 1);
 461                 a = inbuf[0];
 462                 if (a == 127)
 463                         a = 8;
 464                 if (a > 126)
 465                         a = 0;
 466                 if (a == 10)
 467                         a = 13;
 468                 if (((a != 4) && (a != 13) && (a != 8) && (a != NEXT_KEY) && (a != STOP_KEY))
 469                     && ((a < 32) || (a > 126)))
 470                         a = 0;
 471         } while (a == 0);
 472         return (a);
 473 }
 474
 475
 476 int yesno(void)
 477 {                               /* Returns 1 for yes, 0 for no */
 478         int a;
 479         while (1) {
 480                 a = inkey();
 481                 a = tolower(a);
 482                 if (a == 'y') {
 483                         printf("Yes\n");
 484                         return (1);
 485                 }
 486                 if (a == 'n') {
 487                         printf("No\n");
 488                         return (0);
 489                 }
 490         }
 491 }
 492
 493 /* Returns 1 for yes, 0 for no, arg is default value */
 494 int yesno_d(int d)
 495 {
 496         int a;
 497         while (1) {
 498                 a = inkey();
 499                 a = tolower(a);
 500                 if (a == 13)
 501                         a = (d ? 'y' : 'n');
 502                 if (a == 'y') {
 503                         printf("Yes\n");
 504                         return (1);
 505                 }
 506                 if (a == 'n') {
 507                         printf("No\n");
 508                         return (0);
 509                 }
 510         }
 511 }
 512
 513
 514
 515
 516 /* Gets a line from the terminal */
 517 /* string == Pointer to string buffer */
 518 /* lim == Maximum length - if negative, no-show */
 519 void getline(char *string, int lim)
 520 {
 521         int a, b;
 522         char flag = 0;
 523
 524         if (lim < 0) {
 525                 lim = (0 - lim);
 526                 flag = 1;
 527         }
 528         strcpy(string, "");
 529         gl_string = string;
 530         async_ka_start();
 531       GLA:a = inkey();
 532         a = (a & 127);
 533         if ((a == 8) && (strlen(string) == 0))
 534                 goto GLA;
 535         if ((a != 13) && (a != 8) && (strlen(string) == lim))
 536                 goto GLA;
 537         if ((a == 8) && (string[0] != 0)) {
 538                 string[strlen(string) - 1] = 0;
 539                 putc(8, stdout);
 540                 putc(32, stdout);
 541                 putc(8, stdout);
 542                 goto GLA;
 543         }
 544         if ((a == 13) || (a == 10)) {
 545                 putc(13, stdout);
 546                 putc(10, stdout);
 547                 async_ka_end();
 548                 return;
 549         }
 550         if (a < 32)
 551                 a = '.';
 552         b = strlen(string);
 553         string[b] = a;
 554         string[b + 1] = 0;
 555         if (flag == 0)
 556                 putc(a, stdout);
 557         if (flag == 1)
 558                 putc('*', stdout);
 559         goto GLA;
 560 }
 561
 562
 563 /*
 564  * strprompt()  -  prompt for a string, print the existing value and
 565  *                 allow the user to press return to keep it...
 566  */
 567 void strprompt(char *prompt, char *str, int len)
 568 {
 569         char buf[128];
 570         print_express();
 571         color(DIM_WHITE);
 572         printf("%s ", prompt);
 573         color(DIM_MAGENTA);
 574         printf("[");
 575         color(BRIGHT_MAGENTA);
 576         printf("%s", str);
 577         color(DIM_MAGENTA);
 578         printf("]");
 579         color(DIM_WHITE);
 580         printf(": ");
 581         color(BRIGHT_CYAN);
 582         getline(buf, len);
 583         if (buf[0] != 0)
 584                 strcpy(str, buf);
 585         color(DIM_WHITE);
 586 }
 587
 588 /*
 589  * boolprompt()  -  prompt for a yes/no, print the existing value and
 590  *                  allow the user to press return to keep it...
 591  */
 592 int boolprompt(char *prompt, int prev_val)
 593 {
 594         int r;
 595
 596         color(DIM_WHITE);
 597         printf("%s ", prompt);
 598         color(DIM_MAGENTA);
 599         printf(" [");
 600         color(BRIGHT_MAGENTA);
 601         printf("%s", (prev_val ? "Yes" : "No"));
 602         color(DIM_MAGENTA);
 603         printf("]: ");
 604         color(BRIGHT_CYAN);
 605         r = (yesno_d(prev_val));
 606         color(DIM_WHITE);
 607         return r;
 608 }
 609
 610 /*
 611  * intprompt()  -  like strprompt(), except for an integer
 612  *                 (note that it RETURNS the new value!)
 613  */
 614 int intprompt(char *prompt, int ival, int imin, int imax)
 615 {
 616         char buf[16];
 617         int i;
 618         int p;
 619
 620         do {
 621                 i = ival;
 622                 snprintf(buf, sizeof buf, "%d", i);
 623                 strprompt(prompt, buf, 15);
 624                 i = atoi(buf);
 625                 for (p=0; p<strlen(buf); ++p) {
 626                         if ( (!isdigit(buf[p]))
 627                            && ( (buf[p]!='-') || (p!=0) )  )
 628                                 i = imin - 1;
 629                 }
 630                 if (i < imin)
 631                         printf("*** Must be no less than %d.\n", imin);
 632                 if (i > imax)
 633                         printf("*** Must be no more than %d.\n", imax);
 634         } while ((i < imin) || (i > imax));
 635         return (i);
 636 }
 637
 638 /*
 639  * newprompt()  -  prompt for a string with no existing value
 640  *                 (clears out string buffer first)
 641  */
 642 void newprompt(char *prompt, char *str, int len)
 643 {
 644         color(BRIGHT_MAGENTA);
 645         printf("%s", prompt);
 646         color(DIM_MAGENTA);
 647         getline(str, len);
 648         color(DIM_WHITE);
 649 }
 650
 651
 652 int lkey(void)
 653 {                               /* returns a lower case value */
 654         int a;
 655         a = inkey();
 656         if (isupper(a))
 657                 a = tolower(a);
 658         return (a);
 659 }
 660
 661 /*
 662  * parse the citadel.rc file
 663  */
 664 void load_command_set(void)
 665 {
 666         FILE *ccfile;
 667         char buf[1024];
 668         struct citcmd *cptr;
 669         struct citcmd *lastcmd = NULL;
 670         int a, d;
 671         int b = 0;
 672
 673
 674         /* first, set up some defaults for non-required variables */
 675
 676         strcpy(editor_path, "");
 677         strcpy(printcmd, "");
 678         strcpy(rc_username, "");
 679         strcpy(rc_password, "");
 680         rc_floor_mode = 0;
 681         rc_exp_beep = 1;
 682         rc_allow_attachments = 0;
 683         rc_remember_passwords = 0;
 684         strcpy(rc_exp_cmd, "");
 685         rc_display_message_numbers = 0;
 686         rc_force_mail_prompts = 0;
 687         rc_ansi_color = 0;
 688         strcpy(rc_url_cmd, "");
 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("/usr/local/lib/citadel.rc", "r");
 699         }
 700         if (ccfile == NULL) {
 701                 snprintf(buf, sizeof buf, "%s/citadel.rc", BBSDIR);
 702                 ccfile = fopen(buf, "r");
 703         }
 704         if (ccfile == NULL) {
 705                 ccfile = fopen("./citadel.rc", "r");
 706         }
 707         if (ccfile == NULL) {
 708                 perror("commands: cannot open citadel.rc");
 709                 logoff(errno);
 710         }
 711         while (fgets(buf, sizeof buf, ccfile) != NULL) {
 712                 while ((strlen(buf) > 0) ? (isspace(buf[strlen(buf) - 1])) : 0)
 713                         buf[strlen(buf) - 1] = 0;
 714
 715                 if (!strncasecmp(buf, "editor=", 7))
 716                         strcpy(editor_path, &buf[7]);
 717
 718                 if (!strncasecmp(buf, "printcmd=", 9))
 719                         strcpy(printcmd, &buf[9]);
 720
 721                 if (!strncasecmp(buf, "expcmd=", 7))
 722                         strcpy(rc_exp_cmd, &buf[7]);
 723
 724                 if (!strncasecmp(buf, "local_screen_dimensions=", 24))
 725                         have_xterm = (char) atoi(&buf[24]);
 726
 727                 if (!strncasecmp(buf, "use_floors=", 11)) {
 728                         if (!strcasecmp(&buf[11], "yes"))
 729                                 rc_floor_mode = RC_YES;
 730                         if (!strcasecmp(&buf[11], "no"))
 731                                 rc_floor_mode = RC_NO;
 732                         if (!strcasecmp(&buf[11], "default"))
 733                                 rc_floor_mode = RC_DEFAULT;
 734                 }
 735                 if (!strncasecmp(buf, "beep=", 5)) {
 736                         rc_exp_beep = atoi(&buf[5]);
 737                 }
 738                 if (!strncasecmp(buf, "allow_attachments=", 18)) {
 739                         rc_allow_attachments = atoi(&buf[18]);
 740                 }
 741                 if (!strncasecmp(buf, "remember_passwords=", 19)) {
 742                         rc_remember_passwords = atoi(&buf[19]);
 743                 }
 744                 if (!strncasecmp(buf, "display_message_numbers=", 24)) {
 745                         rc_display_message_numbers = atoi(&buf[24]);
 746                 }
 747                 if (!strncasecmp(buf, "force_mail_prompts=", 19)) {
 748                         rc_force_mail_prompts = atoi(&buf[19]);
 749                 }
 750                 if (!strncasecmp(buf, "ansi_color=", 11)) {
 751                         if (!strncasecmp(&buf[11], "on", 2))
 752                                 rc_ansi_color = 1;
 753                         if (!strncasecmp(&buf[11], "auto", 4))
 754                                 rc_ansi_color = 2;      /* autodetect */
 755                         if (!strncasecmp(&buf[11], "user", 4))
 756                                 rc_ansi_color = 3;      /* user config */
 757                 }
 758                 if (!strncasecmp(buf, "username=", 9))
 759                         strcpy(rc_username, &buf[9]);
 760
 761                 if (!strncasecmp(buf, "password=", 9))
 762                         strcpy(rc_password, &buf[9]);
 763
 764                 if (!strncasecmp(buf, "urlcmd=", 7))
 765                         strcpy(rc_url_cmd, &buf[7]);
 766
 767                 if (!strncasecmp(buf, "cmd=", 4)) {
 768                         strcpy(buf, &buf[4]);
 769
 770                         cptr = (struct citcmd *) malloc(sizeof(struct citcmd));
 771
 772                         cptr->c_cmdnum = atoi(buf);
 773                         for (d = strlen(buf); d >= 0; --d)
 774                                 if (buf[d] == ',')
 775                                         b = d;
 776                         strcpy(buf, &buf[b + 1]);
 777
 778                         cptr->c_axlevel = atoi(buf);
 779                         for (d = strlen(buf); d >= 0; --d)
 780                                 if (buf[d] == ',')
 781                                         b = d;
 782                         strcpy(buf, &buf[b + 1]);
 783
 784                         for (a = 0; a < 5; ++a)
 785                                 cptr->c_keys[a][0] = 0;
 786
 787                         a = 0;
 788                         b = 0;
 789                         buf[strlen(buf) + 1] = 0;
 790                         while (strlen(buf) > 0) {
 791                                 b = strlen(buf);
 792                                 for (d = strlen(buf); d >= 0; --d)
 793                                         if (buf[d] == ',')
 794                                                 b = d;
 795                                 strncpy(cptr->c_keys[a], buf, b);
 796                                 cptr->c_keys[a][b] = 0;
 797                                 if (buf[b] == ',')
 798                                         strcpy(buf, &buf[b + 1]);
 799                                 else
 800                                         strcpy(buf, "");
 801                                 ++a;
 802                         }
 803
 804                         cptr->next = NULL;
 805                         if (cmdlist == NULL)
 806                                 cmdlist = cptr;
 807                         else
 808                                 lastcmd->next = cptr;
 809                         lastcmd = cptr;
 810                 }
 811         }
 812         fclose(ccfile);
 813 }
 814
 815
 816
 817 /*
 818  * return the key associated with a command
 819  */
 820 char keycmd(char *cmdstr)
 821 {
 822         int a;
 823
 824         for (a = 0; a < strlen(cmdstr); ++a)
 825                 if (cmdstr[a] == '&')
 826                         return (tolower(cmdstr[a + 1]));
 827         return (0);
 828 }
 829
 830
 831 /*
 832  * Output the string from a key command without the ampersand
 833  * "mode" should be set to 0 for normal or 1 for <C>ommand key highlighting
 834  */
 835 char *cmd_expand(char *strbuf, int mode)
 836 {
 837         int a;
 838         static char exp[64];
 839         char buf[1024];
 840
 841         strcpy(exp, strbuf);
 842
 843         for (a = 0; a < strlen(exp); ++a) {
 844                 if (strbuf[a] == '&') {
 845
 846                         if (mode == 0) {
 847                                 strcpy(&exp[a], &exp[a + 1]);
 848                         }
 849                         if (mode == 1) {
 850                                 exp[a] = '<';
 851                                 strcpy(buf, &exp[a + 2]);
 852                                 exp[a + 2] = '>';
 853                                 exp[a + 3] = 0;
 854                                 strcat(exp, buf);
 855                         }
 856                 }
 857                 if (!strncmp(&exp[a], "^r", 2)) {
 858                         strcpy(buf, exp);
 859                         strcpy(&exp[a], room_name);
 860                         strcat(exp, &buf[a + 2]);
 861                 }
 862                 if (!strncmp(&exp[a], "^c", 2)) {
 863                         exp[a] = ',';
 864                         strcpy(&exp[a + 1], &exp[a + 2]);
 865                 }
 866         }
 867
 868         return (exp);
 869 }
 870
 871
 872
 873 /*
 874  * Comparison function to determine if entered commands match a
 875  * command loaded from the config file.
 876  */
 877 int cmdmatch(char *cmdbuf, struct citcmd *cptr, int ncomp)
 878 {
 879         int a;
 880         int cmdax;
 881
 882         cmdax = 0;
 883         if (is_room_aide)
 884                 cmdax = 1;
 885         if (axlevel >= 6)
 886                 cmdax = 2;
 887
 888         for (a = 0; a < ncomp; ++a) {
 889                 if ((tolower(cmdbuf[a]) != keycmd(cptr->c_keys[a]))
 890                     || (cptr->c_axlevel > cmdax))
 891                         return (0);
 892         }
 893         return (1);
 894 }
 895
 896
 897 /*
 898  * This function returns 1 if a given command requires a string input
 899  */
 900 int requires_string(struct citcmd *cptr, int ncomp)
 901 {
 902         int a;
 903         char buf[64];
 904
 905         strcpy(buf, cptr->c_keys[ncomp - 1]);
 906         for (a = 0; a < strlen(buf); ++a) {
 907                 if (buf[a] == ':')
 908                         return (1);
 909         }
 910         return (0);
 911 }
 912
 913
 914 /*
 915  * Input a command at the main prompt.
 916  * This function returns an integer command number.  If the command prompts
 917  * for a string then it is placed in the supplied buffer.
 918  */
 919 int getcmd(char *argbuf)
 920 {
 921         char cmdbuf[5];
 922         int cmdspaces[5];
 923         int cmdpos;
 924         int ch;
 925         int a;
 926         int got;
 927         int this_lazy_cmd;
 928         struct citcmd *cptr;
 929
 930         /*
 931          * Starting a new command now, so set sigcaught to 0.  This variable
 932          * is set to nonzero (usually NEXT_KEY or STOP_KEY) if a command has
 933          * been interrupted by a keypress.
 934          */
 935         sigcaught = 0;
 936
 937         /* Switch color support on or off if we're in user mode */
 938         if (rc_ansi_color == 3) {
 939                 if (userflags & US_COLOR)
 940                         enable_color = 1;
 941                 else
 942                         enable_color = 0;
 943         }
 944         /* if we're running in idiot mode, display a cute little menu */
 945         IFNEXPERT formout("mainmenu");
 946
 947         print_express();        /* print express messages if there are any */
 948         strcpy(argbuf, "");
 949         cmdpos = 0;
 950         for (a = 0; a < 5; ++a)
 951                 cmdbuf[a] = 0;
 952         /* now the room prompt... */
 953         ok_to_interrupt = 1;
 954         color(BRIGHT_WHITE);
 955         printf("\n%s", room_name);
 956         color(DIM_WHITE);
 957         printf("%c ", room_prompt(room_flags));
 958         fflush(stdout);
 959
 960         while (1) {
 961                 ch = inkey();
 962                 ok_to_interrupt = 0;
 963
 964                 /* Handle the backspace key, but only if there's something
 965                  * to backspace over...
 966                  */
 967                 if ((ch == 8) && (cmdpos > 0)) {
 968                         back(cmdspaces[cmdpos - 1] + 1);
 969                         cmdbuf[cmdpos] = 0;
 970                         --cmdpos;
 971                 }
 972                 /* Spacebar invokes "lazy traversal" commands */
 973                 if ((ch == 32) && (cmdpos == 0)) {
 974                         this_lazy_cmd = next_lazy_cmd;
 975                         if (this_lazy_cmd == 13)
 976                                 next_lazy_cmd = 5;
 977                         if (this_lazy_cmd == 5)
 978                                 next_lazy_cmd = 13;
 979                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
 980                                 if (cptr->c_cmdnum == this_lazy_cmd) {
 981                                         for (a = 0; a < 5; ++a)
 982                                                 if (cptr->c_keys[a][0] != 0)
 983                                                         printf("%s ", cmd_expand(
 984                                                                                         cptr->c_keys[a], 0));
 985                                         printf("\n");
 986                                         return (this_lazy_cmd);
 987                                 }
 988                         }
 989                         printf("\n");
 990                         return (this_lazy_cmd);
 991                 }
 992                 /* Otherwise, process the command */
 993                 cmdbuf[cmdpos] = tolower(ch);
 994
 995                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
 996                         if (cmdmatch(cmdbuf, cptr, cmdpos + 1)) {
 997
 998                                 printf("%s", cmd_expand(cptr->c_keys[cmdpos], 0));
 999                                 cmdspaces[cmdpos] = strlen(
1000                                     cmd_expand(cptr->c_keys[cmdpos], 0));
1001                                 if (cmdpos < 4)
1002                                         if ((cptr->c_keys[cmdpos + 1]) != 0)
1003                                                 putc(' ', stdout);
1004                                 ++cmdpos;
1005                         }
1006                 }
1007
1008                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1009                         if (cmdmatch(cmdbuf, cptr, 5)) {
1010                                 /* We've found our command. */
1011                                 if (requires_string(cptr, cmdpos)) {
1012                                         getline(argbuf, 32);
1013                                 } else {
1014                                         printf("\n");
1015                                 }
1016
1017                                 /* If this command is one that changes rooms,
1018                                  * then the next lazy-command (space bar)
1019                                  * should be "read new" instead of "goto"
1020                                  */
1021                                 if ((cptr->c_cmdnum == 5)
1022                                     || (cptr->c_cmdnum == 6)
1023                                     || (cptr->c_cmdnum == 47)
1024                                     || (cptr->c_cmdnum == 52)
1025                                     || (cptr->c_cmdnum == 16)
1026                                     || (cptr->c_cmdnum == 20))
1027                                         next_lazy_cmd = 13;
1028
1029                                 return (cptr->c_cmdnum);
1030
1031                         }
1032                 }
1033
1034                 if (ch == '?') {
1035                         pprintf("\rOne of ...                         \n");
1036                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1037                                 if (cmdmatch(cmdbuf, cptr, cmdpos)) {
1038                                         for (a = 0; a < 5; ++a) {
1039                                                 pprintf("%s ", cmd_expand(cptr->c_keys[a], 1));
1040                                         }
1041                                         pprintf("\n");
1042                                 }
1043                         }
1044
1045                         pprintf("\n%s%c ", room_name, room_prompt(room_flags));
1046                         got = 0;
1047                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1048                                 if ((got == 0) && (cmdmatch(cmdbuf, cptr, cmdpos))) {
1049                                         for (a = 0; a < cmdpos; ++a) {
1050                                                 pprintf("%s ",
1051                                                        cmd_expand(cptr->c_keys[a], 0));
1052                                         }
1053                                         got = 1;
1054                                 }
1055                         }
1056                 }
1057         }
1058
1059 }
1060
1061
1062
1063
1064
1065 /*
1066  * set tty modes.  commands are:
1067  *
1068  * 01- set to bbs mode
1069  * 2 - save current settings for later restoral
1070  * 3 - restore saved settings
1071  */
1072 #ifdef HAVE_TERMIOS_H
1073 void sttybbs(int cmd)
1074 {                               /* SysV version of sttybbs() */
1075         struct termios live;
1076         static struct termios saved_settings;
1077         static int last_cmd = 0;
1078
1079         if (cmd == SB_LAST)
1080                 cmd = last_cmd;
1081         else
1082                 last_cmd = cmd;
1083
1084         if ((cmd == 0) || (cmd == 1)) {
1085                 tcgetattr(0, &live);
1086                 live.c_iflag = ISTRIP | IXON | IXANY;
1087                 live.c_oflag = OPOST | ONLCR;
1088                 live.c_lflag = ISIG | NOFLSH;
1089
1090                 live.c_cc[VINTR] = (-1);
1091                 live.c_cc[VQUIT] = (-1);
1092
1093 #ifdef hpux
1094                 live.c_cc[VMIN] = 0;
1095                 live.c_cc[VTIME] = 0;
1096 #endif
1097
1098                 /* do we even need this stuff anymore? */
1099                 /* live.c_line=0; */
1100                 live.c_cc[VERASE] = 8;
1101                 live.c_cc[VKILL] = 24;
1102                 live.c_cc[VEOF] = 1;
1103                 live.c_cc[VEOL] = 255;
1104                 live.c_cc[VEOL2] = 0;
1105                 live.c_cc[VSTART] = 0;
1106                 tcsetattr(0, TCSADRAIN, &live);
1107         }
1108         if (cmd == 2) {
1109                 tcgetattr(0, &saved_settings);
1110         }
1111         if (cmd == 3) {
1112                 tcsetattr(0, TCSADRAIN, &saved_settings);
1113         }
1114 }
1115 #else
1116 void sttybbs(int cmd)
1117 {                               /* BSD version of sttybbs() */
1118         struct sgttyb live;
1119         static struct sgttyb saved_settings;
1120
1121         if ((cmd == 0) || (cmd == 1)) {
1122                 gtty(0, &live);
1123                 live.sg_flags |= CBREAK;
1124                 live.sg_flags |= CRMOD;
1125                 live.sg_flags |= NL1;
1126                 live.sg_flags &= ~ECHO;
1127                 if (cmd == 1)
1128                         live.sg_flags |= NOFLSH;
1129                 stty(0, &live);
1130         }
1131         if (cmd == 2) {
1132                 gtty(0, &saved_settings);
1133         }
1134         if (cmd == 3) {
1135                 stty(0, &saved_settings);
1136         }
1137 }
1138 #endif
1139
1140
1141 /*
1142  * display_help()  -  help file viewer
1143  */
1144 void display_help(char *name)
1145 {
1146         formout(name);
1147 }
1148
1149
1150 /*
1151  * fmout()  -  Citadel text formatter and paginator
1152  */
1153 int fmout(
1154         int width,      /* screen width to use */
1155         FILE *fp,       /* file to read from, or NULL to read from server */
1156         char pagin,     /* nonzero if we should use the paginator */
1157         int height,     /* screen height to use */
1158         int starting_lp,/* starting value for lines_printed, -1 for global */
1159         char subst)     /* nonzero if we should use hypertext mode */
1160 {
1161         int a, b, c, d, old;
1162         int real = (-1);
1163         char aaa[140];
1164         char buffer[512];
1165         int eof_flag = 0;
1166
1167         num_urls = 0;   /* Start with a clean slate of embedded URL's */
1168
1169         if (starting_lp >= 0) {
1170                 lines_printed = starting_lp;
1171         }
1172         strcpy(aaa, "");
1173         old = 255;
1174         strcpy(buffer, "");
1175         c = 1;                  /* c is the current pos */
1176
1177 FMTA:   while ((eof_flag == 0) && (strlen(buffer) < 126)) {
1178                 if (fp != NULL) {       /* read from file */
1179                         if (feof(fp))
1180                                 eof_flag = 1;
1181                         if (eof_flag == 0) {
1182                                 a = getc(fp);
1183                                 buffer[strlen(buffer) + 1] = 0;
1184                                 buffer[strlen(buffer)] = a;
1185                         }
1186                 } else {        /* read from server */
1187                         d = strlen(buffer);
1188                         serv_gets(&buffer[d]);
1189                         while ((!isspace(buffer[d])) && (isspace(buffer[strlen(buffer) - 1])))
1190                                 buffer[strlen(buffer) - 1] = 0;
1191                         if (!strcmp(&buffer[d], "000")) {
1192                                 buffer[d] = 0;
1193                                 eof_flag = 1;
1194                                 while (isspace(buffer[strlen(buffer) - 1]))
1195                                         buffer[strlen(buffer) - 1] = 0;
1196                         }
1197                         d = strlen(buffer);
1198                         buffer[d] = 10;
1199                         buffer[d + 1] = 0;
1200                 }
1201         }
1202
1203         if ( (!strncasecmp(buffer, "http://", 7))
1204            || (!strncasecmp(buffer, "ftp://", 6)) ) {
1205                 safestrncpy(urls[num_urls], buffer, (SIZ-1));
1206                 for (a=0; a<strlen(urls[num_urls]); ++a) {
1207                         b = urls[num_urls][a];
1208                         if ( (b==' ') || (b==')') || (b=='>') || (b==10)
1209                            || (b==13) || (b==9) || (b=='\"') )
1210                                 urls[num_urls][a] = 0;
1211                 }
1212                 ++num_urls;
1213         }
1214
1215         buffer[strlen(buffer) + 1] = 0;
1216         a = buffer[0];
1217         strcpy(buffer, &buffer[1]);
1218
1219         old = real;
1220         real = a;
1221         if (a <= 0)
1222                 goto FMTEND;
1223
1224         if (((a == 13) || (a == 10)) && (old != 13) && (old != 10))
1225                 a = 32;
1226         if (((old == 13) || (old == 10)) && (isspace(real))) {
1227                 printf("\n");
1228                 ++lines_printed;
1229                 lines_printed = checkpagin(lines_printed, pagin, height);
1230                 c = 1;
1231         }
1232         if (a > 126)
1233                 goto FMTA;
1234
1235         if (a > 32) {
1236                 if (((strlen(aaa) + c) > (width - 5)) && (strlen(aaa) > (width - 5))) {
1237                         printf("\n%s", aaa);
1238                         c = strlen(aaa);
1239                         aaa[0] = 0;
1240                         ++lines_printed;
1241                         lines_printed = checkpagin(lines_printed, pagin, height);
1242                 }
1243                 b = strlen(aaa);
1244                 aaa[b] = a;
1245                 aaa[b + 1] = 0;
1246         }
1247         if (a == 32) {
1248                 if ((strlen(aaa) + c) > (width - 5)) {
1249                         c = 1;
1250                         printf("\n");
1251                         ++lines_printed;
1252                         lines_printed = checkpagin(lines_printed, pagin, height);
1253                 }
1254                 printf("%s ", aaa);
1255                 ++c;
1256                 c = c + strlen(aaa);
1257                 strcpy(aaa, "");
1258                 goto FMTA;
1259         }
1260         if ((a == 13) || (a == 10)) {
1261                 printf("%s\n", aaa);
1262                 c = 1;
1263                 ++lines_printed;
1264                 lines_printed = checkpagin(lines_printed, pagin, height);
1265                 if (sigcaught) goto OOPS;
1266                 strcpy(aaa, "");
1267                 goto FMTA;
1268         }
1269         goto FMTA;
1270
1271         /* keypress caught; drain the server */
1272 OOPS:   do {
1273                 serv_gets(aaa);
1274         } while (strcmp(aaa, "000"));
1275
1276 FMTEND: printf("\n");
1277         ++lines_printed;
1278         lines_printed = checkpagin(lines_printed, pagin, height);
1279         return (sigcaught);
1280 }
1281
1282
1283 /*
1284  * support ANSI color if defined
1285  */
1286 void color(int colornum)
1287 {
1288         static int is_bold = 0;
1289         static int hold_color, current_color;
1290
1291         if (colornum == COLOR_PUSH) {
1292                 hold_color = current_color;
1293                 return;
1294         }
1295
1296         if (colornum == COLOR_POP) {
1297                 color(hold_color);
1298                 return;
1299         }
1300
1301         current_color = colornum;
1302         if (enable_color) {
1303                 /* When switching to dim white, actually output an 'original
1304                  * pair' sequence -- this looks better on black-on-white
1305                  * terminals.
1306                  */
1307                 if (colornum == DIM_WHITE)
1308                         printf("\033[39;49m");
1309                 else
1310                         printf("\033[3%d;40m", (colornum & 7));
1311
1312                 if ((colornum >= 8) && (is_bold == 0)) {
1313                         printf("\033[1m");
1314                         is_bold = 1;
1315                 } else if ((colornum < 8) && (is_bold == 1)) {
1316                         printf("\033[0m");
1317                         is_bold = 0;
1318                 }
1319                 fflush(stdout);
1320         }
1321 }
1322
1323 void cls(int colornum)
1324 {
1325         if (enable_color) {
1326                 printf("\033[4%dm\033[2J\033[H\033[0m", colornum);
1327                 fflush(stdout);
1328         }
1329 }
1330
1331
1332 /*
1333  * Detect whether ANSI color is available (answerback)
1334  */
1335 void send_ansi_detect(void)
1336 {
1337         if (rc_ansi_color == 2) {
1338                 printf("\033[c");
1339                 fflush(stdout);
1340                 time(&AnsiDetect);
1341         }
1342 }
1343
1344 void look_for_ansi(void)
1345 {
1346         fd_set rfds;
1347         struct timeval tv;
1348         char abuf[512];
1349         time_t now;
1350         int a;
1351
1352         if (rc_ansi_color == 0) {
1353                 enable_color = 0;
1354         } else if (rc_ansi_color == 1) {
1355                 enable_color = 1;
1356         } else if (rc_ansi_color == 2) {
1357
1358                 /* otherwise, do the auto-detect */
1359
1360                 strcpy(abuf, "");
1361
1362                 time(&now);
1363                 if ((now - AnsiDetect) < 2)
1364                         sleep(1);
1365
1366                 do {
1367                         FD_ZERO(&rfds);
1368                         FD_SET(0, &rfds);
1369                         tv.tv_sec = 0;
1370                         tv.tv_usec = 1;
1371
1372                         select(1, &rfds, NULL, NULL, &tv);
1373                         if (FD_ISSET(0, &rfds)) {
1374                                 abuf[strlen(abuf) + 1] = 0;
1375                                 read(0, &abuf[strlen(abuf)], 1);
1376                         }
1377                 } while (FD_ISSET(0, &rfds));
1378
1379                 for (a = 0; a < strlen(abuf); ++a) {
1380                         if ((abuf[a] == 27) && (abuf[a + 1] == '[')
1381                             && (abuf[a + 2] == '?')) {
1382                                 enable_color = 1;
1383                         }
1384                 }
1385         }
1386 }
1387
1388
1389 /*
1390  * Display key options (highlight hotkeys inside angle brackets)
1391  */
1392 void keyopt(char *buf) {
1393         int i;
1394
1395         color(DIM_WHITE);
1396         for (i=0; i<strlen(buf); ++i) {
1397                 if (buf[i]=='<') {
1398                         putc(buf[i], stdout);
1399                         color(BRIGHT_MAGENTA);
1400                 } else {
1401                         if (buf[i]=='>') {
1402                                 color(DIM_WHITE);
1403                         }
1404                         putc(buf[i], stdout);
1405                 }
1406         }
1407         color(DIM_WHITE);
1408 }
1409
1410
1411
1412 /*
1413  * Present a key-menu line choice type of thing
1414  */
1415 char keymenu(char *menuprompt, char *menustring) {
1416         int i, c, a;
1417         int choices;
1418         int do_prompt = 0;
1419         char buf[1024];
1420         int ch;
1421         int display_prompt = 1;
1422
1423         choices = num_tokens(menustring, '|');
1424
1425         if (menuprompt != NULL) do_prompt = 1;
1426         if (menuprompt != NULL) if (strlen(menuprompt)==0) do_prompt = 0;
1427
1428         while (1) {
1429                 if (display_prompt) {
1430                         if (do_prompt) {
1431                                 printf("%s ", menuprompt);
1432                         }
1433                         else {
1434                                 for (i=0; i<choices; ++i) {
1435                                         extract(buf, menustring, i);
1436                                         keyopt(buf);
1437                                         printf(" ");
1438                                 }
1439                         }
1440                         printf(" -> ");
1441                         display_prompt = 0;
1442                 }
1443                 ch = lkey();
1444
1445                 if ( (do_prompt) && (ch=='?') ) {
1446                         printf("\rOne of...                               ");
1447                         printf("                                      \n");
1448                         for (i=0; i<choices; ++i) {
1449                                 extract(buf, menustring, i);
1450                                 printf("   ");
1451                                 keyopt(buf);
1452                                 printf("\n");
1453                         }
1454                         printf("\n");
1455                         display_prompt = 1;
1456                 }
1457
1458                 for (i=0; i<choices; ++i) {
1459                         extract(buf, menustring, i);
1460                         for (c=1; c<strlen(buf); ++c) {
1461                                 if ( (ch == tolower(buf[c]))
1462                                    && (buf[c-1]=='<')
1463                                    && (buf[c+1]=='>') ) {
1464                                         for (a=0; a<strlen(buf); ++a) {
1465                                                 if ( (a!=(c-1)) && (a!=(c+1))) {
1466                                                         putc(buf[a], stdout);
1467                                                 }
1468                                         }
1469                                         printf("\n\n");
1470                                         return ch;
1471                                 }
1472                         }
1473                 }
1474         }
1475 }