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                         if (((now - start_time) > SLEEPING)
 452                             && (SLEEPING != 0) && (getppid() == 1)) {
 453                                 printf("Sleeping? Call again.\n");
 454                                 logoff(SIGALRM);
 455                         }
 456                         select(1, &rfds, NULL, NULL, &tv);
 457                 } while (!FD_ISSET(0, &rfds));
 458
 459
 460
 461
 462                 /* At this point, there's input, so fetch it.
 463                  * (There's a hole in the bucket...)
 464                  */
 465                 read(0, inbuf, 1);
 466                 a = inbuf[0];
 467                 if (a == 127)
 468                         a = 8;
 469                 if (a > 126)
 470                         a = 0;
 471                 if (a == 10)
 472                         a = 13;
 473                 if (((a != 4) && (a != 13) && (a != 8) && (a != NEXT_KEY) && (a != STOP_KEY))
 474                     && ((a < 32) || (a > 126)))
 475                         a = 0;
 476         } while (a == 0);
 477         return (a);
 478 }
 479
 480
 481 int yesno(void)
 482 {                               /* Returns 1 for yes, 0 for no */
 483         int a;
 484         while (1) {
 485                 a = inkey();
 486                 a = tolower(a);
 487                 if (a == 'y') {
 488                         printf("Yes\n");
 489                         return (1);
 490                 }
 491                 if (a == 'n') {
 492                         printf("No\n");
 493                         return (0);
 494                 }
 495         }
 496 }
 497
 498 /* Returns 1 for yes, 0 for no, arg is default value */
 499 int yesno_d(int d)
 500 {
 501         int a;
 502         while (1) {
 503                 a = inkey();
 504                 a = tolower(a);
 505                 if (a == 13)
 506                         a = (d ? 'y' : 'n');
 507                 if (a == 'y') {
 508                         printf("Yes\n");
 509                         return (1);
 510                 }
 511                 if (a == 'n') {
 512                         printf("No\n");
 513                         return (0);
 514                 }
 515         }
 516 }
 517
 518
 519
 520
 521 /* Gets a line from the terminal */
 522 /* string == Pointer to string buffer */
 523 /* lim == Maximum length - if negative, no-show */
 524 void getline(char *string, int lim)
 525 {
 526         int a, b;
 527         char flag = 0;
 528
 529         if (lim < 0) {
 530                 lim = (0 - lim);
 531                 flag = 1;
 532         }
 533         strcpy(string, "");
 534         gl_string = string;
 535         async_ka_start();
 536       GLA:a = inkey();
 537         a = (a & 127);
 538         if ((a == 8) && (strlen(string) == 0))
 539                 goto GLA;
 540         if ((a != 13) && (a != 8) && (strlen(string) == lim))
 541                 goto GLA;
 542         if ((a == 8) && (string[0] != 0)) {
 543                 string[strlen(string) - 1] = 0;
 544                 putc(8, stdout);
 545                 putc(32, stdout);
 546                 putc(8, stdout);
 547                 goto GLA;
 548         }
 549         if ((a == 13) || (a == 10)) {
 550                 putc(13, stdout);
 551                 putc(10, stdout);
 552                 async_ka_end();
 553                 return;
 554         }
 555         if (a < 32)
 556                 a = '.';
 557         b = strlen(string);
 558         string[b] = a;
 559         string[b + 1] = 0;
 560         if (flag == 0)
 561                 putc(a, stdout);
 562         if (flag == 1)
 563                 putc('*', stdout);
 564         goto GLA;
 565 }
 566
 567
 568 /*
 569  * strprompt()  -  prompt for a string, print the existing value and
 570  *                 allow the user to press return to keep it...
 571  */
 572 void strprompt(char *prompt, char *str, int len)
 573 {
 574         char buf[128];
 575         print_express();
 576         color(DIM_WHITE);
 577         printf("%s ", prompt);
 578         color(DIM_MAGENTA);
 579         printf("[");
 580         color(BRIGHT_MAGENTA);
 581         printf("%s", str);
 582         color(DIM_MAGENTA);
 583         printf("]");
 584         color(DIM_WHITE);
 585         printf(": ");
 586         color(BRIGHT_CYAN);
 587         getline(buf, len);
 588         if (buf[0] != 0)
 589                 strcpy(str, buf);
 590         color(DIM_WHITE);
 591 }
 592
 593 /*
 594  * boolprompt()  -  prompt for a yes/no, print the existing value and
 595  *                  allow the user to press return to keep it...
 596  */
 597 int boolprompt(char *prompt, int prev_val)
 598 {
 599         int r;
 600
 601         color(DIM_WHITE);
 602         printf("%s ", prompt);
 603         color(DIM_MAGENTA);
 604         printf(" [");
 605         color(BRIGHT_MAGENTA);
 606         printf("%s", (prev_val ? "Yes" : "No"));
 607         color(DIM_MAGENTA);
 608         printf("]: ");
 609         color(BRIGHT_CYAN);
 610         r = (yesno_d(prev_val));
 611         color(DIM_WHITE);
 612         return r;
 613 }
 614
 615 /*
 616  * intprompt()  -  like strprompt(), except for an integer
 617  *                 (note that it RETURNS the new value!)
 618  */
 619 int intprompt(char *prompt, int ival, int imin, int imax)
 620 {
 621         char buf[16];
 622         int i;
 623         int p;
 624
 625         do {
 626                 i = ival;
 627                 snprintf(buf, sizeof buf, "%d", i);
 628                 strprompt(prompt, buf, 15);
 629                 i = atoi(buf);
 630                 for (p=0; p<strlen(buf); ++p) {
 631                         if ( (!isdigit(buf[p]))
 632                            && ( (buf[p]!='-') || (p!=0) )  )
 633                                 i = imin - 1;
 634                 }
 635                 if (i < imin)
 636                         printf("*** Must be no less than %d.\n", imin);
 637                 if (i > imax)
 638                         printf("*** Must be no more than %d.\n", imax);
 639         } while ((i < imin) || (i > imax));
 640         return (i);
 641 }
 642
 643 /*
 644  * newprompt()  -  prompt for a string with no existing value
 645  *                 (clears out string buffer first)
 646  */
 647 void newprompt(char *prompt, char *str, int len)
 648 {
 649         color(BRIGHT_MAGENTA);
 650         printf("%s", prompt);
 651         color(DIM_MAGENTA);
 652         getline(str, len);
 653         color(DIM_WHITE);
 654 }
 655
 656
 657 int lkey(void)
 658 {                               /* returns a lower case value */
 659         int a;
 660         a = inkey();
 661         if (isupper(a))
 662                 a = tolower(a);
 663         return (a);
 664 }
 665
 666 /*
 667  * parse the citadel.rc file
 668  */
 669 void load_command_set(void)
 670 {
 671         FILE *ccfile;
 672         char buf[1024];
 673         struct citcmd *cptr;
 674         struct citcmd *lastcmd = NULL;
 675         int a, d;
 676         int b = 0;
 677
 678
 679         /* first, set up some defaults for non-required variables */
 680
 681         strcpy(editor_path, "");
 682         strcpy(printcmd, "");
 683         strcpy(rc_username, "");
 684         strcpy(rc_password, "");
 685         rc_floor_mode = 0;
 686         rc_exp_beep = 1;
 687         rc_allow_attachments = 0;
 688         rc_remember_passwords = 0;
 689         strcpy(rc_exp_cmd, "");
 690         rc_display_message_numbers = 0;
 691         rc_force_mail_prompts = 0;
 692         rc_ansi_color = 0;
 693         strcpy(rc_url_cmd, "");
 694
 695         /* now try to open the citadel.rc file */
 696
 697         ccfile = NULL;
 698         if (getenv("HOME") != NULL) {
 699                 snprintf(buf, sizeof buf, "%s/.citadelrc", getenv("HOME"));
 700                 ccfile = fopen(buf, "r");
 701         }
 702         if (ccfile == NULL) {
 703                 ccfile = fopen("/usr/local/lib/citadel.rc", "r");
 704         }
 705         if (ccfile == NULL) {
 706                 snprintf(buf, sizeof buf, "%s/citadel.rc", BBSDIR);
 707                 ccfile = fopen(buf, "r");
 708         }
 709         if (ccfile == NULL) {
 710                 ccfile = fopen("./citadel.rc", "r");
 711         }
 712         if (ccfile == NULL) {
 713                 perror("commands: cannot open citadel.rc");
 714                 logoff(errno);
 715         }
 716         while (fgets(buf, sizeof buf, ccfile) != NULL) {
 717                 while ((strlen(buf) > 0) ? (isspace(buf[strlen(buf) - 1])) : 0)
 718                         buf[strlen(buf) - 1] = 0;
 719
 720                 if (!strncasecmp(buf, "editor=", 7))
 721                         strcpy(editor_path, &buf[7]);
 722
 723                 if (!strncasecmp(buf, "printcmd=", 9))
 724                         strcpy(printcmd, &buf[9]);
 725
 726                 if (!strncasecmp(buf, "expcmd=", 7))
 727                         strcpy(rc_exp_cmd, &buf[7]);
 728
 729                 if (!strncasecmp(buf, "local_screen_dimensions=", 24))
 730                         have_xterm = (char) atoi(&buf[24]);
 731
 732                 if (!strncasecmp(buf, "use_floors=", 11)) {
 733                         if (!strcasecmp(&buf[11], "yes"))
 734                                 rc_floor_mode = RC_YES;
 735                         if (!strcasecmp(&buf[11], "no"))
 736                                 rc_floor_mode = RC_NO;
 737                         if (!strcasecmp(&buf[11], "default"))
 738                                 rc_floor_mode = RC_DEFAULT;
 739                 }
 740                 if (!strncasecmp(buf, "beep=", 5)) {
 741                         rc_exp_beep = atoi(&buf[5]);
 742                 }
 743                 if (!strncasecmp(buf, "allow_attachments=", 18)) {
 744                         rc_allow_attachments = atoi(&buf[18]);
 745                 }
 746                 if (!strncasecmp(buf, "remember_passwords=", 19)) {
 747                         rc_remember_passwords = atoi(&buf[19]);
 748                 }
 749                 if (!strncasecmp(buf, "display_message_numbers=", 24)) {
 750                         rc_display_message_numbers = atoi(&buf[24]);
 751                 }
 752                 if (!strncasecmp(buf, "force_mail_prompts=", 19)) {
 753                         rc_force_mail_prompts = atoi(&buf[19]);
 754                 }
 755                 if (!strncasecmp(buf, "ansi_color=", 11)) {
 756                         if (!strncasecmp(&buf[11], "on", 2))
 757                                 rc_ansi_color = 1;
 758                         if (!strncasecmp(&buf[11], "auto", 4))
 759                                 rc_ansi_color = 2;      /* autodetect */
 760                         if (!strncasecmp(&buf[11], "user", 4))
 761                                 rc_ansi_color = 3;      /* user config */
 762                 }
 763                 if (!strncasecmp(buf, "username=", 9))
 764                         strcpy(rc_username, &buf[9]);
 765
 766                 if (!strncasecmp(buf, "password=", 9))
 767                         strcpy(rc_password, &buf[9]);
 768
 769                 if (!strncasecmp(buf, "urlcmd=", 7))
 770                         strcpy(rc_url_cmd, &buf[7]);
 771
 772                 if (!strncasecmp(buf, "cmd=", 4)) {
 773                         strcpy(buf, &buf[4]);
 774
 775                         cptr = (struct citcmd *) malloc(sizeof(struct citcmd));
 776
 777                         cptr->c_cmdnum = 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                         cptr->c_axlevel = atoi(buf);
 784                         for (d = strlen(buf); d >= 0; --d)
 785                                 if (buf[d] == ',')
 786                                         b = d;
 787                         strcpy(buf, &buf[b + 1]);
 788
 789                         for (a = 0; a < 5; ++a)
 790                                 cptr->c_keys[a][0] = 0;
 791
 792                         a = 0;
 793                         b = 0;
 794                         buf[strlen(buf) + 1] = 0;
 795                         while (strlen(buf) > 0) {
 796                                 b = strlen(buf);
 797                                 for (d = strlen(buf); d >= 0; --d)
 798                                         if (buf[d] == ',')
 799                                                 b = d;
 800                                 strncpy(cptr->c_keys[a], buf, b);
 801                                 cptr->c_keys[a][b] = 0;
 802                                 if (buf[b] == ',')
 803                                         strcpy(buf, &buf[b + 1]);
 804                                 else
 805                                         strcpy(buf, "");
 806                                 ++a;
 807                         }
 808
 809                         cptr->next = NULL;
 810                         if (cmdlist == NULL)
 811                                 cmdlist = cptr;
 812                         else
 813                                 lastcmd->next = cptr;
 814                         lastcmd = cptr;
 815                 }
 816         }
 817         fclose(ccfile);
 818 }
 819
 820
 821
 822 /*
 823  * return the key associated with a command
 824  */
 825 char keycmd(char *cmdstr)
 826 {
 827         int a;
 828
 829         for (a = 0; a < strlen(cmdstr); ++a)
 830                 if (cmdstr[a] == '&')
 831                         return (tolower(cmdstr[a + 1]));
 832         return (0);
 833 }
 834
 835
 836 /*
 837  * Output the string from a key command without the ampersand
 838  * "mode" should be set to 0 for normal or 1 for <C>ommand key highlighting
 839  */
 840 char *cmd_expand(char *strbuf, int mode)
 841 {
 842         int a;
 843         static char exp[64];
 844         char buf[1024];
 845
 846         strcpy(exp, strbuf);
 847
 848         for (a = 0; a < strlen(exp); ++a) {
 849                 if (strbuf[a] == '&') {
 850
 851                         if (mode == 0) {
 852                                 strcpy(&exp[a], &exp[a + 1]);
 853                         }
 854                         if (mode == 1) {
 855                                 exp[a] = '<';
 856                                 strcpy(buf, &exp[a + 2]);
 857                                 exp[a + 2] = '>';
 858                                 exp[a + 3] = 0;
 859                                 strcat(exp, buf);
 860                         }
 861                 }
 862                 if (!strncmp(&exp[a], "^r", 2)) {
 863                         strcpy(buf, exp);
 864                         strcpy(&exp[a], room_name);
 865                         strcat(exp, &buf[a + 2]);
 866                 }
 867                 if (!strncmp(&exp[a], "^c", 2)) {
 868                         exp[a] = ',';
 869                         strcpy(&exp[a + 1], &exp[a + 2]);
 870                 }
 871         }
 872
 873         return (exp);
 874 }
 875
 876
 877
 878 /*
 879  * Comparison function to determine if entered commands match a
 880  * command loaded from the config file.
 881  */
 882 int cmdmatch(char *cmdbuf, struct citcmd *cptr, int ncomp)
 883 {
 884         int a;
 885         int cmdax;
 886
 887         cmdax = 0;
 888         if (is_room_aide)
 889                 cmdax = 1;
 890         if (axlevel >= 6)
 891                 cmdax = 2;
 892
 893         for (a = 0; a < ncomp; ++a) {
 894                 if ((tolower(cmdbuf[a]) != keycmd(cptr->c_keys[a]))
 895                     || (cptr->c_axlevel > cmdax))
 896                         return (0);
 897         }
 898         return (1);
 899 }
 900
 901
 902 /*
 903  * This function returns 1 if a given command requires a string input
 904  */
 905 int requires_string(struct citcmd *cptr, int ncomp)
 906 {
 907         int a;
 908         char buf[64];
 909
 910         strcpy(buf, cptr->c_keys[ncomp - 1]);
 911         for (a = 0; a < strlen(buf); ++a) {
 912                 if (buf[a] == ':')
 913                         return (1);
 914         }
 915         return (0);
 916 }
 917
 918
 919 /*
 920  * Input a command at the main prompt.
 921  * This function returns an integer command number.  If the command prompts
 922  * for a string then it is placed in the supplied buffer.
 923  */
 924 int getcmd(char *argbuf)
 925 {
 926         char cmdbuf[5];
 927         int cmdspaces[5];
 928         int cmdpos;
 929         int ch;
 930         int a;
 931         int got;
 932         int this_lazy_cmd;
 933         struct citcmd *cptr;
 934
 935         /*
 936          * Starting a new command now, so set sigcaught to 0.  This variable
 937          * is set to nonzero (usually NEXT_KEY or STOP_KEY) if a command has
 938          * been interrupted by a keypress.
 939          */
 940         sigcaught = 0;
 941
 942         /* Switch color support on or off if we're in user mode */
 943         if (rc_ansi_color == 3) {
 944                 if (userflags & US_COLOR)
 945                         enable_color = 1;
 946                 else
 947                         enable_color = 0;
 948         }
 949         /* if we're running in idiot mode, display a cute little menu */
 950         IFNEXPERT formout("mainmenu");
 951
 952         print_express();        /* print express messages if there are any */
 953         strcpy(argbuf, "");
 954         cmdpos = 0;
 955         for (a = 0; a < 5; ++a)
 956                 cmdbuf[a] = 0;
 957         /* now the room prompt... */
 958         ok_to_interrupt = 1;
 959         color(BRIGHT_WHITE);
 960         printf("\n%s", room_name);
 961         color(DIM_WHITE);
 962         printf("%c ", room_prompt(room_flags));
 963         fflush(stdout);
 964
 965         while (1) {
 966                 ch = inkey();
 967                 ok_to_interrupt = 0;
 968
 969                 /* Handle the backspace key, but only if there's something
 970                  * to backspace over...
 971                  */
 972                 if ((ch == 8) && (cmdpos > 0)) {
 973                         back(cmdspaces[cmdpos - 1] + 1);
 974                         cmdbuf[cmdpos] = 0;
 975                         --cmdpos;
 976                 }
 977                 /* Spacebar invokes "lazy traversal" commands */
 978                 if ((ch == 32) && (cmdpos == 0)) {
 979                         this_lazy_cmd = next_lazy_cmd;
 980                         if (this_lazy_cmd == 13)
 981                                 next_lazy_cmd = 5;
 982                         if (this_lazy_cmd == 5)
 983                                 next_lazy_cmd = 13;
 984                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
 985                                 if (cptr->c_cmdnum == this_lazy_cmd) {
 986                                         for (a = 0; a < 5; ++a)
 987                                                 if (cptr->c_keys[a][0] != 0)
 988                                                         printf("%s ", cmd_expand(
 989                                                                                         cptr->c_keys[a], 0));
 990                                         printf("\n");
 991                                         return (this_lazy_cmd);
 992                                 }
 993                         }
 994                         printf("\n");
 995                         return (this_lazy_cmd);
 996                 }
 997                 /* Otherwise, process the command */
 998                 cmdbuf[cmdpos] = tolower(ch);
 999
1000                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1001                         if (cmdmatch(cmdbuf, cptr, cmdpos + 1)) {
1002
1003                                 printf("%s", cmd_expand(cptr->c_keys[cmdpos], 0));
1004                                 cmdspaces[cmdpos] = strlen(
1005                                     cmd_expand(cptr->c_keys[cmdpos], 0));
1006                                 if (cmdpos < 4)
1007                                         if ((cptr->c_keys[cmdpos + 1]) != 0)
1008                                                 putc(' ', stdout);
1009                                 ++cmdpos;
1010                         }
1011                 }
1012
1013                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1014                         if (cmdmatch(cmdbuf, cptr, 5)) {
1015                                 /* We've found our command. */
1016                                 if (requires_string(cptr, cmdpos)) {
1017                                         getline(argbuf, 32);
1018                                 } else {
1019                                         printf("\n");
1020                                 }
1021
1022                                 /* If this command is one that changes rooms,
1023                                  * then the next lazy-command (space bar)
1024                                  * should be "read new" instead of "goto"
1025                                  */
1026                                 if ((cptr->c_cmdnum == 5)
1027                                     || (cptr->c_cmdnum == 6)
1028                                     || (cptr->c_cmdnum == 47)
1029                                     || (cptr->c_cmdnum == 52)
1030                                     || (cptr->c_cmdnum == 16)
1031                                     || (cptr->c_cmdnum == 20))
1032                                         next_lazy_cmd = 13;
1033
1034                                 return (cptr->c_cmdnum);
1035
1036                         }
1037                 }
1038
1039                 if (ch == '?') {
1040                         printf("\rOne of ...                         \n");
1041                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1042                                 if (cmdmatch(cmdbuf, cptr, cmdpos)) {
1043                                         for (a = 0; a < 5; ++a) {
1044                                                 printf("%s ", cmd_expand(cptr->c_keys[a], 1));
1045                                         }
1046                                         printf("\n");
1047                                 }
1048                         }
1049
1050                         printf("\n%s%c ", room_name, room_prompt(room_flags));
1051                         got = 0;
1052                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1053                                 if ((got == 0) && (cmdmatch(cmdbuf, cptr, cmdpos))) {
1054                                         for (a = 0; a < cmdpos; ++a) {
1055                                                 printf("%s ",
1056                                                        cmd_expand(cptr->c_keys[a], 0));
1057                                         }
1058                                         got = 1;
1059                                 }
1060                         }
1061                 }
1062         }
1063
1064 }
1065
1066
1067
1068
1069
1070 /*
1071  * set tty modes.  commands are:
1072  *
1073  * 01- set to bbs mode
1074  * 2 - save current settings for later restoral
1075  * 3 - restore saved settings
1076  */
1077 #ifdef HAVE_TERMIOS_H
1078 void sttybbs(int cmd)
1079 {                               /* SysV version of sttybbs() */
1080         struct termios live;
1081         static struct termios saved_settings;
1082         static int last_cmd = 0;
1083
1084         if (cmd == SB_LAST)
1085                 cmd = last_cmd;
1086         else
1087                 last_cmd = cmd;
1088
1089         if ((cmd == 0) || (cmd == 1)) {
1090                 tcgetattr(0, &live);
1091                 live.c_iflag = ISTRIP | IXON | IXANY;
1092                 live.c_oflag = OPOST | ONLCR;
1093                 live.c_lflag = ISIG | NOFLSH;
1094
1095                 live.c_cc[VINTR] = (-1);
1096                 live.c_cc[VQUIT] = (-1);
1097
1098 #ifdef hpux
1099                 live.c_cc[VMIN] = 0;
1100                 live.c_cc[VTIME] = 0;
1101 #endif
1102
1103                 /* do we even need this stuff anymore? */
1104                 /* live.c_line=0; */
1105                 live.c_cc[VERASE] = 8;
1106                 live.c_cc[VKILL] = 24;
1107                 live.c_cc[VEOF] = 1;
1108                 live.c_cc[VEOL] = 255;
1109                 live.c_cc[VEOL2] = 0;
1110                 live.c_cc[VSTART] = 0;
1111                 tcsetattr(0, TCSADRAIN, &live);
1112         }
1113         if (cmd == 2) {
1114                 tcgetattr(0, &saved_settings);
1115         }
1116         if (cmd == 3) {
1117                 tcsetattr(0, TCSADRAIN, &saved_settings);
1118         }
1119 }
1120 #else
1121 void sttybbs(int cmd)
1122 {                               /* BSD version of sttybbs() */
1123         struct sgttyb live;
1124         static struct sgttyb saved_settings;
1125
1126         if ((cmd == 0) || (cmd == 1)) {
1127                 gtty(0, &live);
1128                 live.sg_flags |= CBREAK;
1129                 live.sg_flags |= CRMOD;
1130                 live.sg_flags |= NL1;
1131                 live.sg_flags &= ~ECHO;
1132                 if (cmd == 1)
1133                         live.sg_flags |= NOFLSH;
1134                 stty(0, &live);
1135         }
1136         if (cmd == 2) {
1137                 gtty(0, &saved_settings);
1138         }
1139         if (cmd == 3) {
1140                 stty(0, &saved_settings);
1141         }
1142 }
1143 #endif
1144
1145
1146 /*
1147  * display_help()  -  help file viewer
1148  */
1149 void display_help(char *name)
1150 {
1151         formout(name);
1152 }
1153
1154
1155 /*
1156  * fmout()  -  Citadel text formatter and paginator
1157  */
1158 int fmout(
1159         int width,      /* screen width to use */
1160         FILE *fp,       /* file to read from, or NULL to read from server */
1161         char pagin,     /* nonzero if we should use the paginator */
1162         int height,     /* screen height to use */
1163         int starting_lp,/* starting value for lines_printed, -1 for global */
1164         char subst)     /* nonzero if we should use hypertext mode */
1165 {
1166         int a, b, c, d, old;
1167         int real = (-1);
1168         char aaa[140];
1169         char buffer[512];
1170         int eof_flag = 0;
1171
1172         num_urls = 0;   /* Start with a clean slate of embedded URL's */
1173
1174         if (starting_lp >= 0) {
1175                 lines_printed = starting_lp;
1176         }
1177         strcpy(aaa, "");
1178         old = 255;
1179         strcpy(buffer, "");
1180         c = 1;                  /* c is the current pos */
1181
1182 FMTA:   while ((eof_flag == 0) && (strlen(buffer) < 126)) {
1183                 if (fp != NULL) {       /* read from file */
1184                         if (feof(fp))
1185                                 eof_flag = 1;
1186                         if (eof_flag == 0) {
1187                                 a = getc(fp);
1188                                 buffer[strlen(buffer) + 1] = 0;
1189                                 buffer[strlen(buffer)] = a;
1190                         }
1191                 } else {        /* read from server */
1192                         d = strlen(buffer);
1193                         serv_gets(&buffer[d]);
1194                         while ((!isspace(buffer[d])) && (isspace(buffer[strlen(buffer) - 1])))
1195                                 buffer[strlen(buffer) - 1] = 0;
1196                         if (!strcmp(&buffer[d], "000")) {
1197                                 buffer[d] = 0;
1198                                 eof_flag = 1;
1199                                 while (isspace(buffer[strlen(buffer) - 1]))
1200                                         buffer[strlen(buffer) - 1] = 0;
1201                         }
1202                         d = strlen(buffer);
1203                         buffer[d] = 10;
1204                         buffer[d + 1] = 0;
1205                 }
1206         }
1207
1208         if ( (!strncasecmp(buffer, "http://", 7))
1209            || (!strncasecmp(buffer, "ftp://", 6)) ) {
1210                 safestrncpy(urls[num_urls], buffer, (SIZ-1));
1211                 for (a=0; a<strlen(urls[num_urls]); ++a) {
1212                         b = urls[num_urls][a];
1213                         if ( (b==' ') || (b==')') || (b=='>') || (b==10)
1214                            || (b==13) || (b==9) || (b=='\"') )
1215                                 urls[num_urls][a] = 0;
1216                 }
1217                 ++num_urls;
1218         }
1219
1220         buffer[strlen(buffer) + 1] = 0;
1221         a = buffer[0];
1222         strcpy(buffer, &buffer[1]);
1223
1224         old = real;
1225         real = a;
1226         if (a <= 0)
1227                 goto FMTEND;
1228
1229         if (((a == 13) || (a == 10)) && (old != 13) && (old != 10))
1230                 a = 32;
1231         if (((old == 13) || (old == 10)) && (isspace(real))) {
1232                 printf("\n");
1233                 ++lines_printed;
1234                 lines_printed = checkpagin(lines_printed, pagin, height);
1235                 c = 1;
1236         }
1237         if (a > 126)
1238                 goto FMTA;
1239
1240         if (a > 32) {
1241                 if (((strlen(aaa) + c) > (width - 5)) && (strlen(aaa) > (width - 5))) {
1242                         printf("\n%s", aaa);
1243                         c = strlen(aaa);
1244                         aaa[0] = 0;
1245                         ++lines_printed;
1246                         lines_printed = checkpagin(lines_printed, pagin, height);
1247                 }
1248                 b = strlen(aaa);
1249                 aaa[b] = a;
1250                 aaa[b + 1] = 0;
1251         }
1252         if (a == 32) {
1253                 if ((strlen(aaa) + c) > (width - 5)) {
1254                         c = 1;
1255                         printf("\n");
1256                         ++lines_printed;
1257                         lines_printed = checkpagin(lines_printed, pagin, height);
1258                 }
1259                 printf("%s ", aaa);
1260                 ++c;
1261                 c = c + strlen(aaa);
1262                 strcpy(aaa, "");
1263                 goto FMTA;
1264         }
1265         if ((a == 13) || (a == 10)) {
1266                 printf("%s\n", aaa);
1267                 c = 1;
1268                 ++lines_printed;
1269                 lines_printed = checkpagin(lines_printed, pagin, height);
1270                 if (sigcaught) goto OOPS;
1271                 strcpy(aaa, "");
1272                 goto FMTA;
1273         }
1274         goto FMTA;
1275
1276         /* keypress caught; drain the server */
1277 OOPS:   do {
1278                 serv_gets(aaa);
1279         } while (strcmp(aaa, "000"));
1280
1281 FMTEND: printf("\n");
1282         ++lines_printed;
1283         lines_printed = checkpagin(lines_printed, pagin, height);
1284         return (sigcaught);
1285 }
1286
1287
1288 /*
1289  * support ANSI color if defined
1290  */
1291 void color(int colornum)
1292 {
1293         static int is_bold = 0;
1294         static int hold_color, current_color;
1295
1296         if (colornum == COLOR_PUSH) {
1297                 hold_color = current_color;
1298                 return;
1299         }
1300
1301         if (colornum == COLOR_POP) {
1302                 color(hold_color);
1303                 return;
1304         }
1305
1306         current_color = colornum;
1307         if (enable_color) {
1308                 /* When switching to dim white, actually output an 'original
1309                  * pair' sequence -- this looks better on black-on-white
1310                  * terminals.
1311                  */
1312                 if (colornum == DIM_WHITE)
1313                         printf("\033[39;49m");
1314                 else
1315                         printf("\033[3%d;40m", (colornum & 7));
1316
1317                 if ((colornum >= 8) && (is_bold == 0)) {
1318                         printf("\033[1m");
1319                         is_bold = 1;
1320                 } else if ((colornum < 8) && (is_bold == 1)) {
1321                         printf("\033[0m");
1322                         is_bold = 0;
1323                 }
1324                 fflush(stdout);
1325         }
1326 }
1327
1328 void cls(int colornum)
1329 {
1330         if (enable_color) {
1331                 printf("\033[4%dm\033[2J\033[H\033[0m", colornum);
1332                 fflush(stdout);
1333         }
1334 }
1335
1336
1337 /*
1338  * Detect whether ANSI color is available (answerback)
1339  */
1340 void send_ansi_detect(void)
1341 {
1342         if (rc_ansi_color == 2) {
1343                 printf("\033[c");
1344                 fflush(stdout);
1345                 time(&AnsiDetect);
1346         }
1347 }
1348
1349 void look_for_ansi(void)
1350 {
1351         fd_set rfds;
1352         struct timeval tv;
1353         char abuf[512];
1354         time_t now;
1355         int a;
1356
1357         if (rc_ansi_color == 0) {
1358                 enable_color = 0;
1359         } else if (rc_ansi_color == 1) {
1360                 enable_color = 1;
1361         } else if (rc_ansi_color == 2) {
1362
1363                 /* otherwise, do the auto-detect */
1364
1365                 strcpy(abuf, "");
1366
1367                 time(&now);
1368                 if ((now - AnsiDetect) < 2)
1369                         sleep(1);
1370
1371                 do {
1372                         FD_ZERO(&rfds);
1373                         FD_SET(0, &rfds);
1374                         tv.tv_sec = 0;
1375                         tv.tv_usec = 1;
1376
1377                         select(1, &rfds, NULL, NULL, &tv);
1378                         if (FD_ISSET(0, &rfds)) {
1379                                 abuf[strlen(abuf) + 1] = 0;
1380                                 read(0, &abuf[strlen(abuf)], 1);
1381                         }
1382                 } while (FD_ISSET(0, &rfds));
1383
1384                 for (a = 0; a < strlen(abuf); ++a) {
1385                         if ((abuf[a] == 27) && (abuf[a + 1] == '[')
1386                             && (abuf[a + 2] == '?')) {
1387                                 enable_color = 1;
1388                         }
1389                 }
1390         }
1391 }
1392
1393
1394 /*
1395  * Display key options (highlight hotkeys inside angle brackets)
1396  */
1397 void keyopt(char *buf) {
1398         int i;
1399
1400         color(DIM_WHITE);
1401         for (i=0; i<strlen(buf); ++i) {
1402                 if (buf[i]=='<') {
1403                         putc(buf[i], stdout);
1404                         color(BRIGHT_MAGENTA);
1405                 } else {
1406                         if (buf[i]=='>') {
1407                                 color(DIM_WHITE);
1408                         }
1409                         putc(buf[i], stdout);
1410                 }
1411         }
1412         color(DIM_WHITE);
1413 }
1414
1415
1416
1417 /*
1418  * Present a key-menu line choice type of thing
1419  */
1420 char keymenu(char *menuprompt, char *menustring) {
1421         int i, c, a;
1422         int choices;
1423         int do_prompt = 0;
1424         char buf[1024];
1425         int ch;
1426         int display_prompt = 1;
1427
1428         choices = num_tokens(menustring, '|');
1429
1430         if (menuprompt != NULL) do_prompt = 1;
1431         if (menuprompt != NULL) if (strlen(menuprompt)==0) do_prompt = 0;
1432
1433         while (1) {
1434                 if (display_prompt) {
1435                         if (do_prompt) {
1436                                 printf("%s ", menuprompt);
1437                         }
1438                         else {
1439                                 for (i=0; i<choices; ++i) {
1440                                         extract(buf, menustring, i);
1441                                         keyopt(buf);
1442                                         printf(" ");
1443                                 }
1444                         }
1445                         printf(" -> ");
1446                         display_prompt = 0;
1447                 }
1448                 ch = lkey();
1449
1450                 if ( (do_prompt) && (ch=='?') ) {
1451                         printf("\rOne of...                               ");
1452                         printf("                                      \n");
1453                         for (i=0; i<choices; ++i) {
1454                                 extract(buf, menustring, i);
1455                                 printf("   ");
1456                                 keyopt(buf);
1457                                 printf("\n");
1458                         }
1459                         printf("\n");
1460                         display_prompt = 1;
1461                 }
1462
1463                 for (i=0; i<choices; ++i) {
1464                         extract(buf, menustring, i);
1465                         for (c=1; c<strlen(buf); ++c) {
1466                                 if ( (ch == tolower(buf[c]))
1467                                    && (buf[c-1]=='<')
1468                                    && (buf[c+1]=='>') ) {
1469                                         for (a=0; a<strlen(buf); ++a) {
1470                                                 if ( (a!=(c-1)) && (a!=(c+1))) {
1471                                                         putc(buf[a], stdout);
1472                                                 }
1473                                         }
1474                                         printf("\n\n");
1475                                         return ch;
1476                                 }
1477                         }
1478                 }
1479         }
1480 }