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                 lines_printed++;
 278
 279                 /* Header derived from flags */
 280                 if (flags & 2)
 281                         printf("Please log off now, as requested ");
 282                 else if (flags & 1)
 283                         printf("Broadcast message ");
 284                 else if (flags & 4)
 285                         printf("Chat request ");
 286                 else
 287                         printf("Message ");
 288
 289                 /* Timestamp.  Can this be improved? */
 290                 if (stamp->tm_hour == 0 || stamp->tm_hour == 12)/* 12am/12pm */
 291                         printf("at 12:%02d%cm", stamp->tm_min,
 292                                 stamp->tm_hour ? 'p' : 'a');
 293                 else if (stamp->tm_hour > 12)                   /* pm */
 294                         printf("at %d:%02dpm",
 295                                 stamp->tm_hour - 12, stamp->tm_min);
 296                 else                                            /* am */
 297                         printf("at %d:%02dam", stamp->tm_hour, stamp->tm_min);
 298
 299                 /* Sender */
 300                 printf(" from %s", sender);
 301
 302                 /* Remote node, if any */
 303                 if (strncmp(serv_info.serv_nodename, node, 32))
 304                         printf(" @%s", node);
 305
 306                 printf(":\n");
 307                 lines_printed++;
 308                 fmout(screenwidth, NULL, 1, screenheight, -1, 0);
 309         }
 310         printf("\n---\n");
 311         color(BRIGHT_WHITE);
 312
 313
 314 }
 315
 316
 317 void set_keepalives(int s)
 318 {
 319         keepalives_enabled = (char) s;
 320 }
 321
 322 /*
 323  * This loop handles the "keepalive" messages sent to the server when idling.
 324  */
 325
 326 static time_t idlet = 0;
 327 static void really_do_keepalive(void) {
 328         char buf[1024];
 329
 330         time(&idlet);
 331         if (keepalives_enabled == KA_YES) {
 332                 serv_puts("NOOP");
 333                 serv_gets(buf);
 334                 if (buf[3] == '*') {
 335                         express_msgs = 1;
 336                         if (ok_to_interrupt == 1) {
 337                                 printf("\r%64s\r", "");
 338                                 print_express();
 339                                 printf("%s%c ", room_name,
 340                                        room_prompt(room_flags));
 341                                 fflush(stdout);
 342                         }
 343                 }
 344         }
 345 }
 346
 347 /* threaded nonblocking keepalive stuff starts here. I'm going for a simple
 348    encapsulated interface; in theory there should be no need to touch these
 349    globals outside of the async_ka_* functions. */
 350
 351 #ifdef THREADED_CLIENT
 352 static pthread_t ka_thr_handle;
 353 static int ka_thr_active = 0;
 354 static int async_ka_enabled = 0;
 355
 356 static void *ka_thread(void *arg)
 357 {
 358         really_do_keepalive();
 359         pthread_detach(ka_thr_handle);
 360         ka_thr_active = 0;
 361         return NULL;
 362 }
 363
 364 /* start up a thread to handle a keepalive in the background */
 365 static void async_ka_exec(void)
 366 {
 367         if (!ka_thr_active) {
 368                 ka_thr_active = 1;
 369                 if (pthread_create(&ka_thr_handle, NULL, ka_thread, NULL)) {
 370                         perror("pthread_create");
 371                         exit(1);
 372                 }
 373         }
 374 }
 375 #endif /* THREADED_CLIENT */
 376
 377 static void do_keepalive(void)
 378 {
 379         time_t now;
 380
 381         time(&now);
 382         if ((now - idlet) < ((long) S_KEEPALIVE))
 383                 return;
 384
 385         /* Do a space-backspace to keep telnet sessions from idling out */
 386         printf(" %c", 8);
 387         fflush(stdout);
 388
 389 #ifdef THREADED_CLIENT
 390         if (async_ka_enabled)
 391                 async_ka_exec();
 392         else
 393 #endif
 394                 really_do_keepalive();
 395 }
 396
 397
 398 /* Now the actual async-keepalve API that we expose to higher levels:
 399    async_ka_start() and async_ka_end(). These do nothing when we don't have
 400    threading enabled, so we avoid sprinkling ifdef's throughout the code. */
 401
 402 /* wait for a background keepalive to complete. this must be done before
 403    attempting any further server requests! */
 404 void async_ka_end(void)
 405 {
 406 #ifdef THREADED_CLIENT
 407         if (ka_thr_active)
 408                 pthread_join(ka_thr_handle, NULL);
 409
 410         async_ka_enabled--;
 411 #endif
 412 }
 413
 414 /* tell do_keepalive() that keepalives are asynchronous. */
 415 void async_ka_start(void)
 416 {
 417 #ifdef THREADED_CLIENT
 418         async_ka_enabled++;
 419 #endif
 420 }
 421
 422
 423 int inkey(void)
 424 {                               /* get a character from the keyboard, with   */
 425         int a;                  /* the watchdog timer in effect if necessary */
 426         fd_set rfds;
 427         struct timeval tv;
 428         time_t start_time, now;
 429         char inbuf[2];
 430
 431         fflush(stdout);
 432         lines_printed = 0;
 433         time(&start_time);
 434
 435         do {
 436
 437                 /* This loop waits for keyboard input.  If the keepalive
 438                  * timer expires, it sends a keepalive to the server if
 439                  * necessary and then waits again.
 440                  */
 441                 do {
 442                         do_keepalive();
 443
 444                         FD_ZERO(&rfds);
 445                         FD_SET(0, &rfds);
 446                         tv.tv_sec = S_KEEPALIVE;
 447                         tv.tv_usec = 0;
 448
 449                         time(&now);
 450                         select(1, &rfds, NULL, NULL, &tv);
 451                 } while (!FD_ISSET(0, &rfds));
 452
 453
 454
 455
 456                 /* At this point, there's input, so fetch it.
 457                  * (There's a hole in the bucket...)
 458                  */
 459                 read(0, inbuf, 1);
 460                 a = inbuf[0];
 461                 if (a == 127)
 462                         a = 8;
 463                 if (a > 126)
 464                         a = 0;
 465                 if (a == 10)
 466                         a = 13;
 467                 if (((a != 4) && (a != 13) && (a != 8) && (a != NEXT_KEY) && (a != STOP_KEY))
 468                     && ((a < 32) || (a > 126)))
 469                         a = 0;
 470         } while (a == 0);
 471         return (a);
 472 }
 473
 474
 475 int yesno(void)
 476 {                               /* Returns 1 for yes, 0 for no */
 477         int a;
 478         while (1) {
 479                 a = inkey();
 480                 a = tolower(a);
 481                 if (a == 'y') {
 482                         printf("Yes\n");
 483                         return (1);
 484                 }
 485                 if (a == 'n') {
 486                         printf("No\n");
 487                         return (0);
 488                 }
 489         }
 490 }
 491
 492 /* Returns 1 for yes, 0 for no, arg is default value */
 493 int yesno_d(int d)
 494 {
 495         int a;
 496         while (1) {
 497                 a = inkey();
 498                 a = tolower(a);
 499                 if (a == 13)
 500                         a = (d ? 'y' : 'n');
 501                 if (a == 'y') {
 502                         printf("Yes\n");
 503                         return (1);
 504                 }
 505                 if (a == 'n') {
 506                         printf("No\n");
 507                         return (0);
 508                 }
 509         }
 510 }
 511
 512
 513
 514
 515 /* Gets a line from the terminal */
 516 /* string == Pointer to string buffer */
 517 /* lim == Maximum length - if negative, no-show */
 518 void getline(char *string, int lim)
 519 {
 520         int a, b;
 521         char flag = 0;
 522
 523         if (lim < 0) {
 524                 lim = (0 - lim);
 525                 flag = 1;
 526         }
 527         strcpy(string, "");
 528         gl_string = string;
 529         async_ka_start();
 530       GLA:a = inkey();
 531         a = (a & 127);
 532         if ((a == 8) && (strlen(string) == 0))
 533                 goto GLA;
 534         if ((a != 13) && (a != 8) && (strlen(string) == lim))
 535                 goto GLA;
 536         if ((a == 8) && (string[0] != 0)) {
 537                 string[strlen(string) - 1] = 0;
 538                 putc(8, stdout);
 539                 putc(32, stdout);
 540                 putc(8, stdout);
 541                 goto GLA;
 542         }
 543         if ((a == 13) || (a == 10)) {
 544                 putc(13, stdout);
 545                 putc(10, stdout);
 546                 async_ka_end();
 547                 return;
 548         }
 549         if (a < 32)
 550                 a = '.';
 551         b = strlen(string);
 552         string[b] = a;
 553         string[b + 1] = 0;
 554         if (flag == 0)
 555                 putc(a, stdout);
 556         if (flag == 1)
 557                 putc('*', stdout);
 558         goto GLA;
 559 }
 560
 561
 562 /*
 563  * strprompt()  -  prompt for a string, print the existing value and
 564  *                 allow the user to press return to keep it...
 565  */
 566 void strprompt(char *prompt, char *str, int len)
 567 {
 568         char buf[128];
 569         print_express();
 570         color(DIM_WHITE);
 571         printf("%s ", prompt);
 572         color(DIM_MAGENTA);
 573         printf("[");
 574         color(BRIGHT_MAGENTA);
 575         printf("%s", str);
 576         color(DIM_MAGENTA);
 577         printf("]");
 578         color(DIM_WHITE);
 579         printf(": ");
 580         color(BRIGHT_CYAN);
 581         getline(buf, len);
 582         if (buf[0] != 0)
 583                 strcpy(str, buf);
 584         color(DIM_WHITE);
 585 }
 586
 587 /*
 588  * boolprompt()  -  prompt for a yes/no, print the existing value and
 589  *                  allow the user to press return to keep it...
 590  */
 591 int boolprompt(char *prompt, int prev_val)
 592 {
 593         int r;
 594
 595         color(DIM_WHITE);
 596         printf("%s ", prompt);
 597         color(DIM_MAGENTA);
 598         printf(" [");
 599         color(BRIGHT_MAGENTA);
 600         printf("%s", (prev_val ? "Yes" : "No"));
 601         color(DIM_MAGENTA);
 602         printf("]: ");
 603         color(BRIGHT_CYAN);
 604         r = (yesno_d(prev_val));
 605         color(DIM_WHITE);
 606         return r;
 607 }
 608
 609 /*
 610  * intprompt()  -  like strprompt(), except for an integer
 611  *                 (note that it RETURNS the new value!)
 612  */
 613 int intprompt(char *prompt, int ival, int imin, int imax)
 614 {
 615         char buf[16];
 616         int i;
 617         int p;
 618
 619         do {
 620                 i = ival;
 621                 snprintf(buf, sizeof buf, "%d", i);
 622                 strprompt(prompt, buf, 15);
 623                 i = atoi(buf);
 624                 for (p=0; p<strlen(buf); ++p) {
 625                         if ( (!isdigit(buf[p]))
 626                            && ( (buf[p]!='-') || (p!=0) )  )
 627                                 i = imin - 1;
 628                 }
 629                 if (i < imin)
 630                         printf("*** Must be no less than %d.\n", imin);
 631                 if (i > imax)
 632                         printf("*** Must be no more than %d.\n", imax);
 633         } while ((i < imin) || (i > imax));
 634         return (i);
 635 }
 636
 637 /*
 638  * newprompt()  -  prompt for a string with no existing value
 639  *                 (clears out string buffer first)
 640  */
 641 void newprompt(char *prompt, char *str, int len)
 642 {
 643         color(BRIGHT_MAGENTA);
 644         printf("%s", prompt);
 645         color(DIM_MAGENTA);
 646         getline(str, len);
 647         color(DIM_WHITE);
 648 }
 649
 650
 651 int lkey(void)
 652 {                               /* returns a lower case value */
 653         int a;
 654         a = inkey();
 655         if (isupper(a))
 656                 a = tolower(a);
 657         return (a);
 658 }
 659
 660 /*
 661  * parse the citadel.rc file
 662  */
 663 void load_command_set(void)
 664 {
 665         FILE *ccfile;
 666         char buf[1024];
 667         struct citcmd *cptr;
 668         struct citcmd *lastcmd = NULL;
 669         int a, d;
 670         int b = 0;
 671
 672
 673         /* first, set up some defaults for non-required variables */
 674
 675         strcpy(editor_path, "");
 676         strcpy(printcmd, "");
 677         strcpy(rc_username, "");
 678         strcpy(rc_password, "");
 679         rc_floor_mode = 0;
 680         rc_exp_beep = 1;
 681         rc_allow_attachments = 0;
 682         rc_remember_passwords = 0;
 683         strcpy(rc_exp_cmd, "");
 684         rc_display_message_numbers = 0;
 685         rc_force_mail_prompts = 0;
 686         rc_ansi_color = 0;
 687         strcpy(rc_url_cmd, "");
 688
 689         /* now try to open the citadel.rc file */
 690
 691         ccfile = NULL;
 692         if (getenv("HOME") != NULL) {
 693                 snprintf(buf, sizeof buf, "%s/.citadelrc", getenv("HOME"));
 694                 ccfile = fopen(buf, "r");
 695         }
 696         if (ccfile == NULL) {
 697                 ccfile = fopen("/usr/local/lib/citadel.rc", "r");
 698         }
 699         if (ccfile == NULL) {
 700                 snprintf(buf, sizeof buf, "%s/citadel.rc", BBSDIR);
 701                 ccfile = fopen(buf, "r");
 702         }
 703         if (ccfile == NULL) {
 704                 ccfile = fopen("./citadel.rc", "r");
 705         }
 706         if (ccfile == NULL) {
 707                 perror("commands: cannot open citadel.rc");
 708                 logoff(errno);
 709         }
 710         while (fgets(buf, sizeof buf, ccfile) != NULL) {
 711                 while ((strlen(buf) > 0) ? (isspace(buf[strlen(buf) - 1])) : 0)
 712                         buf[strlen(buf) - 1] = 0;
 713
 714                 if (!strncasecmp(buf, "editor=", 7))
 715                         strcpy(editor_path, &buf[7]);
 716
 717                 if (!strncasecmp(buf, "printcmd=", 9))
 718                         strcpy(printcmd, &buf[9]);
 719
 720                 if (!strncasecmp(buf, "expcmd=", 7))
 721                         strcpy(rc_exp_cmd, &buf[7]);
 722
 723                 if (!strncasecmp(buf, "local_screen_dimensions=", 24))
 724                         have_xterm = (char) atoi(&buf[24]);
 725
 726                 if (!strncasecmp(buf, "use_floors=", 11)) {
 727                         if (!strcasecmp(&buf[11], "yes"))
 728                                 rc_floor_mode = RC_YES;
 729                         if (!strcasecmp(&buf[11], "no"))
 730                                 rc_floor_mode = RC_NO;
 731                         if (!strcasecmp(&buf[11], "default"))
 732                                 rc_floor_mode = RC_DEFAULT;
 733                 }
 734                 if (!strncasecmp(buf, "beep=", 5)) {
 735                         rc_exp_beep = atoi(&buf[5]);
 736                 }
 737                 if (!strncasecmp(buf, "allow_attachments=", 18)) {
 738                         rc_allow_attachments = atoi(&buf[18]);
 739                 }
 740                 if (!strncasecmp(buf, "remember_passwords=", 19)) {
 741                         rc_remember_passwords = atoi(&buf[19]);
 742                 }
 743                 if (!strncasecmp(buf, "display_message_numbers=", 24)) {
 744                         rc_display_message_numbers = atoi(&buf[24]);
 745                 }
 746                 if (!strncasecmp(buf, "force_mail_prompts=", 19)) {
 747                         rc_force_mail_prompts = atoi(&buf[19]);
 748                 }
 749                 if (!strncasecmp(buf, "ansi_color=", 11)) {
 750                         if (!strncasecmp(&buf[11], "on", 2))
 751                                 rc_ansi_color = 1;
 752                         if (!strncasecmp(&buf[11], "auto", 4))
 753                                 rc_ansi_color = 2;      /* autodetect */
 754                         if (!strncasecmp(&buf[11], "user", 4))
 755                                 rc_ansi_color = 3;      /* user config */
 756                 }
 757                 if (!strncasecmp(buf, "username=", 9))
 758                         strcpy(rc_username, &buf[9]);
 759
 760                 if (!strncasecmp(buf, "password=", 9))
 761                         strcpy(rc_password, &buf[9]);
 762
 763                 if (!strncasecmp(buf, "urlcmd=", 7))
 764                         strcpy(rc_url_cmd, &buf[7]);
 765
 766                 if (!strncasecmp(buf, "cmd=", 4)) {
 767                         strcpy(buf, &buf[4]);
 768
 769                         cptr = (struct citcmd *) malloc(sizeof(struct citcmd));
 770
 771                         cptr->c_cmdnum = atoi(buf);
 772                         for (d = strlen(buf); d >= 0; --d)
 773                                 if (buf[d] == ',')
 774                                         b = d;
 775                         strcpy(buf, &buf[b + 1]);
 776
 777                         cptr->c_axlevel = atoi(buf);
 778                         for (d = strlen(buf); d >= 0; --d)
 779                                 if (buf[d] == ',')
 780                                         b = d;
 781                         strcpy(buf, &buf[b + 1]);
 782
 783                         for (a = 0; a < 5; ++a)
 784                                 cptr->c_keys[a][0] = 0;
 785
 786                         a = 0;
 787                         b = 0;
 788                         buf[strlen(buf) + 1] = 0;
 789                         while (strlen(buf) > 0) {
 790                                 b = strlen(buf);
 791                                 for (d = strlen(buf); d >= 0; --d)
 792                                         if (buf[d] == ',')
 793                                                 b = d;
 794                                 strncpy(cptr->c_keys[a], buf, b);
 795                                 cptr->c_keys[a][b] = 0;
 796                                 if (buf[b] == ',')
 797                                         strcpy(buf, &buf[b + 1]);
 798                                 else
 799                                         strcpy(buf, "");
 800                                 ++a;
 801                         }
 802
 803                         cptr->next = NULL;
 804                         if (cmdlist == NULL)
 805                                 cmdlist = cptr;
 806                         else
 807                                 lastcmd->next = cptr;
 808                         lastcmd = cptr;
 809                 }
 810         }
 811         fclose(ccfile);
 812 }
 813
 814
 815
 816 /*
 817  * return the key associated with a command
 818  */
 819 char keycmd(char *cmdstr)
 820 {
 821         int a;
 822
 823         for (a = 0; a < strlen(cmdstr); ++a)
 824                 if (cmdstr[a] == '&')
 825                         return (tolower(cmdstr[a + 1]));
 826         return (0);
 827 }
 828
 829
 830 /*
 831  * Output the string from a key command without the ampersand
 832  * "mode" should be set to 0 for normal or 1 for <C>ommand key highlighting
 833  */
 834 char *cmd_expand(char *strbuf, int mode)
 835 {
 836         int a;
 837         static char exp[64];
 838         char buf[1024];
 839
 840         strcpy(exp, strbuf);
 841
 842         for (a = 0; a < strlen(exp); ++a) {
 843                 if (strbuf[a] == '&') {
 844
 845                         if (mode == 0) {
 846                                 strcpy(&exp[a], &exp[a + 1]);
 847                         }
 848                         if (mode == 1) {
 849                                 exp[a] = '<';
 850                                 strcpy(buf, &exp[a + 2]);
 851                                 exp[a + 2] = '>';
 852                                 exp[a + 3] = 0;
 853                                 strcat(exp, buf);
 854                         }
 855                 }
 856                 if (!strncmp(&exp[a], "^r", 2)) {
 857                         strcpy(buf, exp);
 858                         strcpy(&exp[a], room_name);
 859                         strcat(exp, &buf[a + 2]);
 860                 }
 861                 if (!strncmp(&exp[a], "^c", 2)) {
 862                         exp[a] = ',';
 863                         strcpy(&exp[a + 1], &exp[a + 2]);
 864                 }
 865         }
 866
 867         return (exp);
 868 }
 869
 870
 871
 872 /*
 873  * Comparison function to determine if entered commands match a
 874  * command loaded from the config file.
 875  */
 876 int cmdmatch(char *cmdbuf, struct citcmd *cptr, int ncomp)
 877 {
 878         int a;
 879         int cmdax;
 880
 881         cmdax = 0;
 882         if (is_room_aide)
 883                 cmdax = 1;
 884         if (axlevel >= 6)
 885                 cmdax = 2;
 886
 887         for (a = 0; a < ncomp; ++a) {
 888                 if ((tolower(cmdbuf[a]) != keycmd(cptr->c_keys[a]))
 889                     || (cptr->c_axlevel > cmdax))
 890                         return (0);
 891         }
 892         return (1);
 893 }
 894
 895
 896 /*
 897  * This function returns 1 if a given command requires a string input
 898  */
 899 int requires_string(struct citcmd *cptr, int ncomp)
 900 {
 901         int a;
 902         char buf[64];
 903
 904         strcpy(buf, cptr->c_keys[ncomp - 1]);
 905         for (a = 0; a < strlen(buf); ++a) {
 906                 if (buf[a] == ':')
 907                         return (1);
 908         }
 909         return (0);
 910 }
 911
 912
 913 /*
 914  * Input a command at the main prompt.
 915  * This function returns an integer command number.  If the command prompts
 916  * for a string then it is placed in the supplied buffer.
 917  */
 918 int getcmd(char *argbuf)
 919 {
 920         char cmdbuf[5];
 921         int cmdspaces[5];
 922         int cmdpos;
 923         int ch;
 924         int a;
 925         int got;
 926         int this_lazy_cmd;
 927         struct citcmd *cptr;
 928
 929         /*
 930          * Starting a new command now, so set sigcaught to 0.  This variable
 931          * is set to nonzero (usually NEXT_KEY or STOP_KEY) if a command has
 932          * been interrupted by a keypress.
 933          */
 934         sigcaught = 0;
 935
 936         /* Switch color support on or off if we're in user mode */
 937         if (rc_ansi_color == 3) {
 938                 if (userflags & US_COLOR)
 939                         enable_color = 1;
 940                 else
 941                         enable_color = 0;
 942         }
 943         /* if we're running in idiot mode, display a cute little menu */
 944         IFNEXPERT formout("mainmenu");
 945
 946         print_express();        /* print express messages if there are any */
 947         strcpy(argbuf, "");
 948         cmdpos = 0;
 949         for (a = 0; a < 5; ++a)
 950                 cmdbuf[a] = 0;
 951         /* now the room prompt... */
 952         ok_to_interrupt = 1;
 953         color(BRIGHT_WHITE);
 954         printf("\n%s", room_name);
 955         color(DIM_WHITE);
 956         printf("%c ", room_prompt(room_flags));
 957         fflush(stdout);
 958
 959         while (1) {
 960                 ch = inkey();
 961                 ok_to_interrupt = 0;
 962
 963                 /* Handle the backspace key, but only if there's something
 964                  * to backspace over...
 965                  */
 966                 if ((ch == 8) && (cmdpos > 0)) {
 967                         back(cmdspaces[cmdpos - 1] + 1);
 968                         cmdbuf[cmdpos] = 0;
 969                         --cmdpos;
 970                 }
 971                 /* Spacebar invokes "lazy traversal" commands */
 972                 if ((ch == 32) && (cmdpos == 0)) {
 973                         this_lazy_cmd = next_lazy_cmd;
 974                         if (this_lazy_cmd == 13)
 975                                 next_lazy_cmd = 5;
 976                         if (this_lazy_cmd == 5)
 977                                 next_lazy_cmd = 13;
 978                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
 979                                 if (cptr->c_cmdnum == this_lazy_cmd) {
 980                                         for (a = 0; a < 5; ++a)
 981                                                 if (cptr->c_keys[a][0] != 0)
 982                                                         printf("%s ", cmd_expand(
 983                                                                                         cptr->c_keys[a], 0));
 984                                         printf("\n");
 985                                         return (this_lazy_cmd);
 986                                 }
 987                         }
 988                         printf("\n");
 989                         return (this_lazy_cmd);
 990                 }
 991                 /* Otherwise, process the command */
 992                 cmdbuf[cmdpos] = tolower(ch);
 993
 994                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
 995                         if (cmdmatch(cmdbuf, cptr, cmdpos + 1)) {
 996
 997                                 printf("%s", cmd_expand(cptr->c_keys[cmdpos], 0));
 998                                 cmdspaces[cmdpos] = strlen(
 999                                     cmd_expand(cptr->c_keys[cmdpos], 0));
1000                                 if (cmdpos < 4)
1001                                         if ((cptr->c_keys[cmdpos + 1]) != 0)
1002                                                 putc(' ', stdout);
1003                                 ++cmdpos;
1004                         }
1005                 }
1006
1007                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1008                         if (cmdmatch(cmdbuf, cptr, 5)) {
1009                                 /* We've found our command. */
1010                                 if (requires_string(cptr, cmdpos)) {
1011                                         getline(argbuf, 32);
1012                                 } else {
1013                                         printf("\n");
1014                                 }
1015
1016                                 /* If this command is one that changes rooms,
1017                                  * then the next lazy-command (space bar)
1018                                  * should be "read new" instead of "goto"
1019                                  */
1020                                 if ((cptr->c_cmdnum == 5)
1021                                     || (cptr->c_cmdnum == 6)
1022                                     || (cptr->c_cmdnum == 47)
1023                                     || (cptr->c_cmdnum == 52)
1024                                     || (cptr->c_cmdnum == 16)
1025                                     || (cptr->c_cmdnum == 20))
1026                                         next_lazy_cmd = 13;
1027
1028                                 return (cptr->c_cmdnum);
1029
1030                         }
1031                 }
1032
1033                 if (ch == '?') {
1034                         pprintf("\rOne of ...                         \n");
1035                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1036                                 if (cmdmatch(cmdbuf, cptr, cmdpos)) {
1037                                         for (a = 0; a < 5; ++a) {
1038                                                 pprintf("%s ", cmd_expand(cptr->c_keys[a], 1));
1039                                         }
1040                                         pprintf("\n");
1041                                 }
1042                         }
1043
1044                         pprintf("\n%s%c ", room_name, room_prompt(room_flags));
1045                         got = 0;
1046                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1047                                 if ((got == 0) && (cmdmatch(cmdbuf, cptr, cmdpos))) {
1048                                         for (a = 0; a < cmdpos; ++a) {
1049                                                 pprintf("%s ",
1050                                                        cmd_expand(cptr->c_keys[a], 0));
1051                                         }
1052                                         got = 1;
1053                                 }
1054                         }
1055                 }
1056         }
1057
1058 }
1059
1060
1061
1062
1063
1064 /*
1065  * set tty modes.  commands are:
1066  *
1067  * 01- set to bbs mode
1068  * 2 - save current settings for later restoral
1069  * 3 - restore saved settings
1070  */
1071 #ifdef HAVE_TERMIOS_H
1072 void sttybbs(int cmd)
1073 {                               /* SysV version of sttybbs() */
1074         struct termios live;
1075         static struct termios saved_settings;
1076         static int last_cmd = 0;
1077
1078         if (cmd == SB_LAST)
1079                 cmd = last_cmd;
1080         else
1081                 last_cmd = cmd;
1082
1083         if ((cmd == 0) || (cmd == 1)) {
1084                 tcgetattr(0, &live);
1085                 live.c_iflag = ISTRIP | IXON | IXANY;
1086                 live.c_oflag = OPOST | ONLCR;
1087                 live.c_lflag = ISIG | NOFLSH;
1088
1089                 live.c_cc[VINTR] = (-1);
1090                 live.c_cc[VQUIT] = (-1);
1091
1092 #ifdef hpux
1093                 live.c_cc[VMIN] = 0;
1094                 live.c_cc[VTIME] = 0;
1095 #endif
1096
1097                 /* do we even need this stuff anymore? */
1098                 /* live.c_line=0; */
1099                 live.c_cc[VERASE] = 8;
1100                 live.c_cc[VKILL] = 24;
1101                 live.c_cc[VEOF] = 1;
1102                 live.c_cc[VEOL] = 255;
1103                 live.c_cc[VEOL2] = 0;
1104                 live.c_cc[VSTART] = 0;
1105                 tcsetattr(0, TCSADRAIN, &live);
1106         }
1107         if (cmd == 2) {
1108                 tcgetattr(0, &saved_settings);
1109         }
1110         if (cmd == 3) {
1111                 tcsetattr(0, TCSADRAIN, &saved_settings);
1112         }
1113 }
1114 #else
1115 void sttybbs(int cmd)
1116 {                               /* BSD version of sttybbs() */
1117         struct sgttyb live;
1118         static struct sgttyb saved_settings;
1119
1120         if ((cmd == 0) || (cmd == 1)) {
1121                 gtty(0, &live);
1122                 live.sg_flags |= CBREAK;
1123                 live.sg_flags |= CRMOD;
1124                 live.sg_flags |= NL1;
1125                 live.sg_flags &= ~ECHO;
1126                 if (cmd == 1)
1127                         live.sg_flags |= NOFLSH;
1128                 stty(0, &live);
1129         }
1130         if (cmd == 2) {
1131                 gtty(0, &saved_settings);
1132         }
1133         if (cmd == 3) {
1134                 stty(0, &saved_settings);
1135         }
1136 }
1137 #endif
1138
1139
1140 /*
1141  * display_help()  -  help file viewer
1142  */
1143 void display_help(char *name)
1144 {
1145         formout(name);
1146 }
1147
1148
1149 /*
1150  * fmout()  -  Citadel text formatter and paginator
1151  */
1152 int fmout(
1153         int width,      /* screen width to use */
1154         FILE *fp,       /* file to read from, or NULL to read from server */
1155         char pagin,     /* nonzero if we should use the paginator */
1156         int height,     /* screen height to use */
1157         int starting_lp,/* starting value for lines_printed, -1 for global */
1158         char subst)     /* nonzero if we should use hypertext mode */
1159 {
1160         int a, b, c, d, old;
1161         int real = (-1);
1162         char aaa[140];
1163         char buffer[512];
1164         int eof_flag = 0;
1165
1166         num_urls = 0;   /* Start with a clean slate of embedded URL's */
1167
1168         if (starting_lp >= 0) {
1169                 lines_printed = starting_lp;
1170         }
1171         strcpy(aaa, "");
1172         old = 255;
1173         strcpy(buffer, "");
1174         c = 1;                  /* c is the current pos */
1175
1176 FMTA:   while ((eof_flag == 0) && (strlen(buffer) < 126)) {
1177                 if (fp != NULL) {       /* read from file */
1178                         if (feof(fp))
1179                                 eof_flag = 1;
1180                         if (eof_flag == 0) {
1181                                 a = getc(fp);
1182                                 buffer[strlen(buffer) + 1] = 0;
1183                                 buffer[strlen(buffer)] = a;
1184                         }
1185                 } else {        /* read from server */
1186                         d = strlen(buffer);
1187                         serv_gets(&buffer[d]);
1188                         while ((!isspace(buffer[d])) && (isspace(buffer[strlen(buffer) - 1])))
1189                                 buffer[strlen(buffer) - 1] = 0;
1190                         if (!strcmp(&buffer[d], "000")) {
1191                                 buffer[d] = 0;
1192                                 eof_flag = 1;
1193                                 while (isspace(buffer[strlen(buffer) - 1]))
1194                                         buffer[strlen(buffer) - 1] = 0;
1195                         }
1196                         d = strlen(buffer);
1197                         buffer[d] = 10;
1198                         buffer[d + 1] = 0;
1199                 }
1200         }
1201
1202         if ( (!strncasecmp(buffer, "http://", 7))
1203            || (!strncasecmp(buffer, "ftp://", 6)) ) {
1204                 safestrncpy(urls[num_urls], buffer, (SIZ-1));
1205                 for (a=0; a<strlen(urls[num_urls]); ++a) {
1206                         b = urls[num_urls][a];
1207                         if ( (b==' ') || (b==')') || (b=='>') || (b==10)
1208                            || (b==13) || (b==9) || (b=='\"') )
1209                                 urls[num_urls][a] = 0;
1210                 }
1211                 ++num_urls;
1212         }
1213
1214         buffer[strlen(buffer) + 1] = 0;
1215         a = buffer[0];
1216         strcpy(buffer, &buffer[1]);
1217
1218         old = real;
1219         real = a;
1220         if (a <= 0)
1221                 goto FMTEND;
1222
1223         if (((a == 13) || (a == 10)) && (old != 13) && (old != 10))
1224                 a = 32;
1225         if (((old == 13) || (old == 10)) && (isspace(real))) {
1226                 printf("\n");
1227                 ++lines_printed;
1228                 lines_printed = checkpagin(lines_printed, pagin, height);
1229                 c = 1;
1230         }
1231         if (a > 126)
1232                 goto FMTA;
1233
1234         if (a > 32) {
1235                 if (((strlen(aaa) + c) > (width - 5)) && (strlen(aaa) > (width - 5))) {
1236                         printf("\n%s", aaa);
1237                         c = strlen(aaa);
1238                         aaa[0] = 0;
1239                         ++lines_printed;
1240                         lines_printed = checkpagin(lines_printed, pagin, height);
1241                 }
1242                 b = strlen(aaa);
1243                 aaa[b] = a;
1244                 aaa[b + 1] = 0;
1245         }
1246         if (a == 32) {
1247                 if ((strlen(aaa) + c) > (width - 5)) {
1248                         c = 1;
1249                         printf("\n");
1250                         ++lines_printed;
1251                         lines_printed = checkpagin(lines_printed, pagin, height);
1252                 }
1253                 printf("%s ", aaa);
1254                 ++c;
1255                 c = c + strlen(aaa);
1256                 strcpy(aaa, "");
1257                 goto FMTA;
1258         }
1259         if ((a == 13) || (a == 10)) {
1260                 printf("%s\n", aaa);
1261                 c = 1;
1262                 ++lines_printed;
1263                 lines_printed = checkpagin(lines_printed, pagin, height);
1264                 if (sigcaught) goto OOPS;
1265                 strcpy(aaa, "");
1266                 goto FMTA;
1267         }
1268         goto FMTA;
1269
1270         /* keypress caught; drain the server */
1271 OOPS:   do {
1272                 serv_gets(aaa);
1273         } while (strcmp(aaa, "000"));
1274
1275 FMTEND: printf("\n");
1276         ++lines_printed;
1277         lines_printed = checkpagin(lines_printed, pagin, height);
1278         return (sigcaught);
1279 }
1280
1281
1282 /*
1283  * support ANSI color if defined
1284  */
1285 void color(int colornum)
1286 {
1287         static int is_bold = 0;
1288         static int hold_color, current_color;
1289
1290         if (colornum == COLOR_PUSH) {
1291                 hold_color = current_color;
1292                 return;
1293         }
1294
1295         if (colornum == COLOR_POP) {
1296                 color(hold_color);
1297                 return;
1298         }
1299
1300         current_color = colornum;
1301         if (enable_color) {
1302                 /* When switching to dim white, actually output an 'original
1303                  * pair' sequence -- this looks better on black-on-white
1304                  * terminals.
1305                  */
1306                 if (colornum == DIM_WHITE)
1307                         printf("\033[39;49m");
1308                 else
1309                         printf("\033[3%d;40m", (colornum & 7));
1310
1311                 if ((colornum >= 8) && (is_bold == 0)) {
1312                         printf("\033[1m");
1313                         is_bold = 1;
1314                 } else if ((colornum < 8) && (is_bold == 1)) {
1315                         printf("\033[0m");
1316                         is_bold = 0;
1317                 }
1318                 fflush(stdout);
1319         }
1320 }
1321
1322 void cls(int colornum)
1323 {
1324         if (enable_color) {
1325                 printf("\033[4%dm\033[2J\033[H\033[0m", colornum);
1326                 fflush(stdout);
1327         }
1328 }
1329
1330
1331 /*
1332  * Detect whether ANSI color is available (answerback)
1333  */
1334 void send_ansi_detect(void)
1335 {
1336         if (rc_ansi_color == 2) {
1337                 printf("\033[c");
1338                 fflush(stdout);
1339                 time(&AnsiDetect);
1340         }
1341 }
1342
1343 void look_for_ansi(void)
1344 {
1345         fd_set rfds;
1346         struct timeval tv;
1347         char abuf[512];
1348         time_t now;
1349         int a;
1350
1351         if (rc_ansi_color == 0) {
1352                 enable_color = 0;
1353         } else if (rc_ansi_color == 1) {
1354                 enable_color = 1;
1355         } else if (rc_ansi_color == 2) {
1356
1357                 /* otherwise, do the auto-detect */
1358
1359                 strcpy(abuf, "");
1360
1361                 time(&now);
1362                 if ((now - AnsiDetect) < 2)
1363                         sleep(1);
1364
1365                 do {
1366                         FD_ZERO(&rfds);
1367                         FD_SET(0, &rfds);
1368                         tv.tv_sec = 0;
1369                         tv.tv_usec = 1;
1370
1371                         select(1, &rfds, NULL, NULL, &tv);
1372                         if (FD_ISSET(0, &rfds)) {
1373                                 abuf[strlen(abuf) + 1] = 0;
1374                                 read(0, &abuf[strlen(abuf)], 1);
1375                         }
1376                 } while (FD_ISSET(0, &rfds));
1377
1378                 for (a = 0; a < strlen(abuf); ++a) {
1379                         if ((abuf[a] == 27) && (abuf[a + 1] == '[')
1380                             && (abuf[a + 2] == '?')) {
1381                                 enable_color = 1;
1382                         }
1383                 }
1384         }
1385 }
1386
1387
1388 /*
1389  * Display key options (highlight hotkeys inside angle brackets)
1390  */
1391 void keyopt(char *buf) {
1392         int i;
1393
1394         color(DIM_WHITE);
1395         for (i=0; i<strlen(buf); ++i) {
1396                 if (buf[i]=='<') {
1397                         putc(buf[i], stdout);
1398                         color(BRIGHT_MAGENTA);
1399                 } else {
1400                         if (buf[i]=='>') {
1401                                 color(DIM_WHITE);
1402                         }
1403                         putc(buf[i], stdout);
1404                 }
1405         }
1406         color(DIM_WHITE);
1407 }
1408
1409
1410
1411 /*
1412  * Present a key-menu line choice type of thing
1413  */
1414 char keymenu(char *menuprompt, char *menustring) {
1415         int i, c, a;
1416         int choices;
1417         int do_prompt = 0;
1418         char buf[1024];
1419         int ch;
1420         int display_prompt = 1;
1421
1422         choices = num_tokens(menustring, '|');
1423
1424         if (menuprompt != NULL) do_prompt = 1;
1425         if (menuprompt != NULL) if (strlen(menuprompt)==0) do_prompt = 0;
1426
1427         while (1) {
1428                 if (display_prompt) {
1429                         if (do_prompt) {
1430                                 printf("%s ", menuprompt);
1431                         }
1432                         else {
1433                                 for (i=0; i<choices; ++i) {
1434                                         extract(buf, menustring, i);
1435                                         keyopt(buf);
1436                                         printf(" ");
1437                                 }
1438                         }
1439                         printf(" -> ");
1440                         display_prompt = 0;
1441                 }
1442                 ch = lkey();
1443
1444                 if ( (do_prompt) && (ch=='?') ) {
1445                         printf("\rOne of...                               ");
1446                         printf("                                      \n");
1447                         for (i=0; i<choices; ++i) {
1448                                 extract(buf, menustring, i);
1449                                 printf("   ");
1450                                 keyopt(buf);
1451                                 printf("\n");
1452                         }
1453                         printf("\n");
1454                         display_prompt = 1;
1455                 }
1456
1457                 for (i=0; i<choices; ++i) {
1458                         extract(buf, menustring, i);
1459                         for (c=1; c<strlen(buf); ++c) {
1460                                 if ( (ch == tolower(buf[c]))
1461                                    && (buf[c-1]=='<')
1462                                    && (buf[c+1]=='>') ) {
1463                                         for (a=0; a<strlen(buf); ++a) {
1464                                                 if ( (a!=(c-1)) && (a!=(c+1))) {
1465                                                         putc(buf[a], stdout);
1466                                                 }
1467                                         }
1468                                         printf("\n\n");
1469                                         return ch;
1470                                 }
1471                         }
1472                 }
1473         }
1474 }