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 #include <sys/time.h>
  18
  19 #ifdef HAVE_TERMIOS_H
  20 #include <termios.h>
  21 #else
  22 #include <sgtty.h>
  23 #endif
  24
  25 #ifdef HAVE_SYS_SELECT_H
  26 #include <sys/select.h>
  27 #endif
  28
  29 #ifdef THREADED_CLIENT
  30 #include <pthread.h>
  31 #endif
  32
  33 #include <signal.h>
  34 #include <errno.h>
  35 #include <stdarg.h>
  36 #include "citadel.h"
  37 #include "commands.h"
  38 #include "messages.h"
  39 #include "citadel_decls.h"
  40 #include "routines.h"
  41 #include "routines2.h"
  42 #include "tools.h"
  43 #include "rooms.h"
  44 #ifndef HAVE_SNPRINTF
  45 #include "snprintf.h"
  46 #endif
  47
  48 struct citcmd {
  49         struct citcmd *next;
  50         int c_cmdnum;
  51         int c_axlevel;
  52         char c_keys[5][64];
  53 };
  54
  55 #define IFNEXPERT if ((userflags&US_EXPERT)==0)
  56
  57
  58 int rc_exp_beep;
  59 char rc_exp_cmd[256];
  60 int rc_allow_attachments;
  61 int rc_display_message_numbers;
  62 int rc_force_mail_prompts;
  63 int rc_remember_passwords;
  64 int rc_ansi_color;
  65 int num_urls = 0;
  66 char urls[MAXURLS][256];
  67 char rc_url_cmd[256];
  68
  69 char *gl_string;
  70 int next_lazy_cmd = 5;
  71
  72 int lines_printed = 0;          /* line count for paginator */
  73 extern int screenwidth, screenheight;
  74 extern int termn8;
  75
  76 struct citcmd *cmdlist = NULL;
  77
  78
  79 /* these variables are local to this module */
  80 char keepalives_enabled = KA_YES;       /* send NOOPs to server when idle */
  81 int ok_to_interrupt = 0;                /* print express msgs asynchronously */
  82 time_t AnsiDetect;                      /* when did we send the detect code? */
  83 int enable_color = 0;                   /* nonzero for ANSI color */
  84
  85
  86
  87
  88 /*
  89  * If an interesting key has been pressed, return its value, otherwise 0
  90  */
  91 char was_a_key_pressed(void) {
  92         fd_set rfds;
  93         struct timeval tv;
  94         int the_character;
  95         int retval;
  96
  97         FD_ZERO(&rfds);
  98         FD_SET(0, &rfds);
  99         tv.tv_sec = 0;
 100         tv.tv_usec = 0;
 101         retval = select(1, &rfds, NULL, NULL, &tv);
 102
 103         /* Careful!  Disable keepalives during keyboard polling; we're probably
 104          * in the middle of a data transfer from the server, in which case
 105          * sending a NOOP would throw the client protocol out of sync.
 106          */
 107         if (FD_ISSET(0, &rfds)) {
 108                 set_keepalives(KA_NO);
 109                 the_character = inkey();
 110                 set_keepalives(KA_YES);
 111         }
 112         else {
 113                 the_character = 0;
 114         }
 115         return(the_character);
 116 }
 117
 118
 119
 120
 121
 122 /*
 123  * Check to see if we need to pause at the end of a screen.
 124  * If we do, we have to disable server keepalives during the pause because
 125  * we are probably in the middle of a server operation and the NOOP command
 126  * would confuse everything.
 127  */
 128 int checkpagin(int lp, int pagin, int height)
 129 {
 130         int thekey;
 131
 132         if (sigcaught) return(lp);
 133         thekey = was_a_key_pressed();
 134         if ( (thekey == NEXT_KEY) || (thekey == STOP_KEY)) sigcaught = thekey;
 135         if (sigcaught) return(lp);
 136
 137         if (!pagin) return(0);
 138         if (lp>=(height-1)) {
 139                 set_keepalives(KA_NO);
 140                 hit_any_key();
 141                 set_keepalives(KA_YES);
 142                 return(0);
 143         }
 144         return(lp);
 145 }
 146
 147
 148
 149
 150 /*
 151  * pprintf()  ...   paginated version of printf()
 152  */
 153 void pprintf(const char *format, ...) {
 154         va_list arg_ptr;
 155         static char buf[4096];  /* static for performance, change if needed */
 156         int i;
 157
 158         /* If sigcaught is nonzero, a keypress has interrupted this and we
 159          * should just drain output.
 160          */
 161         if (sigcaught) return;
 162
 163         /* Otherwise, start spewing... */
 164         va_start(arg_ptr, format);
 165         vsprintf(buf, format, arg_ptr);
 166         va_end(arg_ptr);
 167
 168         for (i=0; i<strlen(buf); ++i) {
 169                 putc(buf[i], stdout);
 170                 if (buf[i]==10) {
 171                         ++lines_printed;
 172                         lines_printed = checkpagin(lines_printed,
 173                                 (userflags & US_PAGINATOR),
 174                                 screenheight);
 175                 }
 176         }
 177 }
 178
 179
 180
 181 /*
 182  * print_express()  -  print express messages if there are any
 183  */
 184 void print_express(void)
 185 {
 186         char buf[256];
 187         FILE *outpipe;
 188         time_t timestamp;
 189         struct tm *stamp;
 190         int flags = 0;
 191         char sender[64];
 192         char node[64];
 193
 194         if (express_msgs == 0)
 195                 return;
 196
 197         if (rc_exp_beep) {
 198                 putc(7, stdout);
 199         }
 200         if (strlen(rc_exp_cmd) == 0) {
 201                 color(BRIGHT_RED);
 202                 printf("\r---");
 203         }
 204
 205         while (express_msgs != 0) {
 206                 serv_puts("GEXP");
 207                 serv_gets(buf);
 208                 if (buf[0] != '1')
 209                         return;
 210
 211                 express_msgs = extract_int(&buf[4], 0);
 212                 timestamp = extract_long(&buf[4], 1);
 213                 flags = extract_int(&buf[4], 2);
 214                 extract(sender, &buf[4], 3);
 215                 extract(node, &buf[4], 4);
 216
 217                 stamp = localtime(&timestamp);
 218
 219                 if (strlen(rc_exp_cmd) > 0) {
 220                         outpipe = popen(rc_exp_cmd, "w");
 221                         if (outpipe != NULL) {
 222                                 /* Header derived from flags */
 223                                 if (flags & 2)
 224                                         fprintf(outpipe,
 225                                                "Please log off now, as requested ");
 226                                 else if (flags & 1)
 227                                         fprintf(outpipe, "Broadcast message ");
 228                                 else if (flags & 4)
 229                                         fprintf(outpipe, "Chat request ");
 230                                 else
 231                                         fprintf(outpipe, "Message ");
 232                                 /* Timestamp.  Can this be improved? */
 233                                 if (stamp->tm_hour == 0 || stamp->tm_hour == 12)
 234                                         fprintf(outpipe, "at 12:%02d%cm",
 235                                                 stamp->tm_min,
 236                                                 stamp->tm_hour ? 'p' : 'a');
 237                                 else if (stamp->tm_hour > 12)           /* pm */
 238                                         fprintf(outpipe, "at %d:%02dpm",
 239                                                 stamp->tm_hour - 12,
 240                                                 stamp->tm_min);
 241                                 else                                    /* am */
 242                                         fprintf(outpipe, "at %d:%02dam",
 243                                                 stamp->tm_hour, stamp->tm_min);
 244                                 fprintf(outpipe, " from %s", sender);
 245                                 if (strncmp(serv_info.serv_nodename, node, 32))
 246                                         fprintf(outpipe, " @%s", node);
 247                                 fprintf(outpipe, ":\n");
 248                                 while (serv_gets(buf), strcmp(buf, "000")) {
 249                                         fprintf(outpipe, "%s\n", buf);
 250                                 }
 251                                 pclose(outpipe);
 252                                 if (express_msgs == 0)
 253                                         return;
 254                                 continue;
 255                         }
 256                 }
 257                 /* fall back to built-in express message display */
 258                 printf("\n");
 259
 260                 /* Header derived from flags */
 261                 if (flags & 2)
 262                         printf("Please log off now, as requested ");
 263                 else if (flags & 1)
 264                         printf("Broadcast message ");
 265                 else if (flags & 4)
 266                         printf("Chat request ");
 267                 else
 268                         printf("Message ");
 269
 270                 /* Timestamp.  Can this be improved? */
 271                 if (stamp->tm_hour == 0 || stamp->tm_hour == 12)/* 12am/12pm */
 272                         printf("at 12:%02d%cm", stamp->tm_min,
 273                                 stamp->tm_hour ? 'p' : 'a');
 274                 else if (stamp->tm_hour > 12)                   /* pm */
 275                         printf("at %d:%02dpm",
 276                                 stamp->tm_hour - 12, stamp->tm_min);
 277                 else                                            /* am */
 278                         printf("at %d:%02dam", stamp->tm_hour, stamp->tm_min);
 279
 280                 /* Sender */
 281                 printf(" from %s", sender);
 282
 283                 /* Remote node, if any */
 284                 if (strncmp(serv_info.serv_nodename, node, 32))
 285                         printf(" @%s", node);
 286
 287                 printf(":\n");
 288
 289                 while (serv_gets(buf), strcmp(buf, "000")) {
 290                         printf("%s", buf);
 291                 }
 292         }
 293         printf("\n---\n");
 294         color(BRIGHT_WHITE);
 295
 296         /* If the page is a Logoff Request, honor it. */
 297         if (flags & 2) {
 298                 termn8 = 1;
 299         }
 300
 301 }
 302
 303
 304 void set_keepalives(int s)
 305 {
 306         keepalives_enabled = (char) s;
 307 }
 308
 309 /*
 310  * This loop handles the "keepalive" messages sent to the server when idling.
 311  */
 312
 313 static time_t idlet = 0;
 314 static void really_do_keepalive(void) {
 315         char buf[256];
 316
 317         time(&idlet);
 318         if (keepalives_enabled == KA_YES) {
 319                 serv_puts("NOOP");
 320                 serv_gets(buf);
 321                 if (buf[3] == '*') {
 322                         express_msgs = 1;
 323                         if (ok_to_interrupt == 1) {
 324                                 printf("\r%64s\r", "");
 325                                 print_express();
 326                                 printf("%s%c ", room_name,
 327                                        room_prompt(room_flags));
 328                                 fflush(stdout);
 329                         }
 330                 }
 331         }
 332 }
 333
 334 /* threaded nonblocking keepalive stuff starts here. I'm going for a simple
 335    encapsulated interface; in theory there should be no need to touch these
 336    globals outside of the async_ka_* functions. */
 337
 338 #ifdef THREADED_CLIENT
 339 static pthread_t ka_thr_handle;
 340 static int ka_thr_active = 0;
 341 static int async_ka_enabled = 0;
 342
 343 static void *ka_thread(void *arg)
 344 {
 345         really_do_keepalive();
 346         pthread_detach(ka_thr_handle);
 347         ka_thr_active = 0;
 348         return NULL;
 349 }
 350
 351 /* start up a thread to handle a keepalive in the background */
 352 static void async_ka_exec(void)
 353 {
 354         if (!ka_thr_active) {
 355                 ka_thr_active = 1;
 356                 if (pthread_create(&ka_thr_handle, NULL, ka_thread, NULL)) {
 357                         perror("pthread_create");
 358                         exit(1);
 359                 }
 360         }
 361 }
 362 #endif /* THREADED_CLIENT */
 363
 364 static void do_keepalive(void)
 365 {
 366         time_t now;
 367
 368         time(&now);
 369         if ((now - idlet) < ((long) S_KEEPALIVE))
 370                 return;
 371
 372         /* Do a space-backspace to keep telnet sessions from idling out */
 373         printf(" %c", 8);
 374         fflush(stdout);
 375
 376 #ifdef THREADED_CLIENT
 377         if (async_ka_enabled)
 378                 async_ka_exec();
 379         else
 380 #endif
 381                 really_do_keepalive();
 382 }
 383
 384
 385 /* Now the actual async-keepalve API that we expose to higher levels:
 386    async_ka_start() and async_ka_end(). These do nothing when we don't have
 387    threading enabled, so we avoid sprinkling ifdef's throughout the code. */
 388
 389 /* wait for a background keepalive to complete. this must be done before
 390    attempting any further server requests! */
 391 void async_ka_end(void)
 392 {
 393 #ifdef THREADED_CLIENT
 394         if (ka_thr_active)
 395                 pthread_join(ka_thr_handle, NULL);
 396
 397         async_ka_enabled--;
 398 #endif
 399 }
 400
 401 /* tell do_keepalive() that keepalives are asynchronous. */
 402 void async_ka_start(void)
 403 {
 404 #ifdef THREADED_CLIENT
 405         async_ka_enabled++;
 406 #endif
 407 }
 408
 409
 410 int inkey(void)
 411 {                               /* get a character from the keyboard, with   */
 412         int a;                  /* the watchdog timer in effect if necessary */
 413         fd_set rfds;
 414         struct timeval tv;
 415         time_t start_time, now;
 416         char inbuf[2];
 417
 418         fflush(stdout);
 419         lines_printed = 0;
 420         time(&start_time);
 421
 422         do {
 423
 424                 /* This loop waits for keyboard input.  If the keepalive
 425                  * timer expires, it sends a keepalive to the server if
 426                  * necessary and then waits again.
 427                  */
 428                 do {
 429                         do_keepalive();
 430
 431                         FD_ZERO(&rfds);
 432                         FD_SET(0, &rfds);
 433                         tv.tv_sec = S_KEEPALIVE;
 434                         tv.tv_usec = 0;
 435
 436                         time(&now);
 437                         if (((now - start_time) > SLEEPING)
 438                             && (SLEEPING != 0) && (getppid() == 1)) {
 439                                 printf("Sleeping? Call again.\n");
 440                                 logoff(SIGALRM);
 441                         }
 442                         select(1, &rfds, NULL, NULL, &tv);
 443                 } while (!FD_ISSET(0, &rfds));
 444
 445
 446
 447
 448                 /* At this point, there's input, so fetch it.
 449                  * (There's a hole in the bucket...)
 450                  */
 451                 read(0, inbuf, 1);
 452                 a = inbuf[0];
 453                 if (a == 127)
 454                         a = 8;
 455                 if (a > 126)
 456                         a = 0;
 457                 if (a == 10)
 458                         a = 13;
 459                 if (((a != 4) && (a != 13) && (a != 8) && (a != NEXT_KEY) && (a != STOP_KEY))
 460                     && ((a < 32) || (a > 126)))
 461                         a = 0;
 462         } while (a == 0);
 463         return (a);
 464 }
 465
 466
 467 int yesno(void)
 468 {                               /* Returns 1 for yes, 0 for no */
 469         int a;
 470         while (1) {
 471                 a = inkey();
 472                 a = tolower(a);
 473                 if (a == 'y') {
 474                         printf("Yes\n");
 475                         return (1);
 476                 }
 477                 if (a == 'n') {
 478                         printf("No\n");
 479                         return (0);
 480                 }
 481         }
 482 }
 483
 484 /* Returns 1 for yes, 0 for no, arg is default value */
 485 int yesno_d(int d)
 486 {
 487         int a;
 488         while (1) {
 489                 a = inkey();
 490                 a = tolower(a);
 491                 if (a == 13)
 492                         a = (d ? 'y' : 'n');
 493                 if (a == 'y') {
 494                         printf("Yes\n");
 495                         return (1);
 496                 }
 497                 if (a == 'n') {
 498                         printf("No\n");
 499                         return (0);
 500                 }
 501         }
 502 }
 503
 504
 505
 506
 507 /* Gets a line from the terminal */
 508 /* string == Pointer to string buffer */
 509 /* lim == Maximum length - if negative, no-show */
 510 void getline(char *string, int lim)
 511 {
 512         int a, b;
 513         char flag = 0;
 514
 515         if (lim < 0) {
 516                 lim = (0 - lim);
 517                 flag = 1;
 518         }
 519         strcpy(string, "");
 520         gl_string = string;
 521         async_ka_start();
 522       GLA:a = inkey();
 523         a = (a & 127);
 524         if ((a == 8) && (strlen(string) == 0))
 525                 goto GLA;
 526         if ((a != 13) && (a != 8) && (strlen(string) == lim))
 527                 goto GLA;
 528         if ((a == 8) && (string[0] != 0)) {
 529                 string[strlen(string) - 1] = 0;
 530                 putc(8, stdout);
 531                 putc(32, stdout);
 532                 putc(8, stdout);
 533                 goto GLA;
 534         }
 535         if ((a == 13) || (a == 10)) {
 536                 putc(13, stdout);
 537                 putc(10, stdout);
 538                 async_ka_end();
 539                 return;
 540         }
 541         if (a < 32)
 542                 a = '.';
 543         b = strlen(string);
 544         string[b] = a;
 545         string[b + 1] = 0;
 546         if (flag == 0)
 547                 putc(a, stdout);
 548         if (flag == 1)
 549                 putc('*', stdout);
 550         goto GLA;
 551 }
 552
 553
 554 /*
 555  * strprompt()  -  prompt for a string, print the existing value and
 556  *                 allow the user to press return to keep it...
 557  */
 558 void strprompt(char *prompt, char *str, int len)
 559 {
 560         char buf[128];
 561         print_express();
 562         color(DIM_WHITE);
 563         printf("%s ", prompt);
 564         color(DIM_MAGENTA);
 565         printf("[");
 566         color(BRIGHT_MAGENTA);
 567         printf("%s", str);
 568         color(DIM_MAGENTA);
 569         printf("]");
 570         color(DIM_WHITE);
 571         printf(": ");
 572         color(BRIGHT_CYAN);
 573         getline(buf, len);
 574         if (buf[0] != 0)
 575                 strcpy(str, buf);
 576         color(DIM_WHITE);
 577 }
 578
 579 /*
 580  * boolprompt()  -  prompt for a yes/no, print the existing value and
 581  *                  allow the user to press return to keep it...
 582  */
 583 int boolprompt(char *prompt, int prev_val)
 584 {
 585         int r;
 586
 587         color(DIM_WHITE);
 588         printf("%s ", prompt);
 589         color(DIM_MAGENTA);
 590         printf(" [");
 591         color(BRIGHT_MAGENTA);
 592         printf("%s", (prev_val ? "Yes" : "No"));
 593         color(DIM_MAGENTA);
 594         printf("]: ");
 595         color(BRIGHT_CYAN);
 596         r = (yesno_d(prev_val));
 597         color(DIM_WHITE);
 598         return r;
 599 }
 600
 601 /*
 602  * intprompt()  -  like strprompt(), except for an integer
 603  *                 (note that it RETURNS the new value!)
 604  */
 605 int intprompt(char *prompt, int ival, int imin, int imax)
 606 {
 607         char buf[16];
 608         int i;
 609         int p;
 610
 611         do {
 612                 i = ival;
 613                 snprintf(buf, sizeof buf, "%d", i);
 614                 strprompt(prompt, buf, 15);
 615                 i = atoi(buf);
 616                 for (p=0; p<strlen(buf); ++p) {
 617                         if ( (!isdigit(buf[p]))
 618                            && ( (buf[p]!='-') || (p!=0) )  )
 619                                 i = imin - 1;
 620                 }
 621                 if (i < imin)
 622                         printf("*** Must be no less than %d.\n", imin);
 623                 if (i > imax)
 624                         printf("*** Must be no more than %d.\n", imax);
 625         } while ((i < imin) || (i > imax));
 626         return (i);
 627 }
 628
 629 /*
 630  * newprompt()  -  prompt for a string with no existing value
 631  *                 (clears out string buffer first)
 632  */
 633 void newprompt(char *prompt, char *str, int len)
 634 {
 635         color(BRIGHT_MAGENTA);
 636         printf("%s", prompt);
 637         color(DIM_MAGENTA);
 638         getline(str, len);
 639         color(DIM_WHITE);
 640 }
 641
 642
 643 int lkey(void)
 644 {                               /* returns a lower case value */
 645         int a;
 646         a = inkey();
 647         if (isupper(a))
 648                 a = tolower(a);
 649         return (a);
 650 }
 651
 652 /*
 653  * parse the citadel.rc file
 654  */
 655 void load_command_set(void)
 656 {
 657         FILE *ccfile;
 658         char buf[256];
 659         struct citcmd *cptr;
 660         struct citcmd *lastcmd = NULL;
 661         int a, d;
 662         int b = 0;
 663
 664
 665         /* first, set up some defaults for non-required variables */
 666
 667         strcpy(editor_path, "");
 668         strcpy(printcmd, "");
 669         strcpy(rc_username, "");
 670         strcpy(rc_password, "");
 671         rc_floor_mode = 0;
 672         rc_exp_beep = 1;
 673         rc_allow_attachments = 0;
 674         rc_remember_passwords = 0;
 675         strcpy(rc_exp_cmd, "");
 676         rc_display_message_numbers = 0;
 677         rc_force_mail_prompts = 0;
 678         rc_ansi_color = 0;
 679         strcpy(rc_url_cmd, "");
 680
 681         /* now try to open the citadel.rc file */
 682
 683         ccfile = NULL;
 684         if (getenv("HOME") != NULL) {
 685                 snprintf(buf, sizeof buf, "%s/.citadelrc", getenv("HOME"));
 686                 ccfile = fopen(buf, "r");
 687         }
 688         if (ccfile == NULL) {
 689                 ccfile = fopen("/usr/local/lib/citadel.rc", "r");
 690         }
 691         if (ccfile == NULL) {
 692                 snprintf(buf, sizeof buf, "%s/citadel.rc", BBSDIR);
 693                 ccfile = fopen(buf, "r");
 694         }
 695         if (ccfile == NULL) {
 696                 ccfile = fopen("./citadel.rc", "r");
 697         }
 698         if (ccfile == NULL) {
 699                 perror("commands: cannot open citadel.rc");
 700                 logoff(errno);
 701         }
 702         while (fgets(buf, 256, ccfile) != NULL) {
 703                 while ((strlen(buf) > 0) ? (isspace(buf[strlen(buf) - 1])) : 0)
 704                         buf[strlen(buf) - 1] = 0;
 705
 706                 if (!strncasecmp(buf, "editor=", 7))
 707                         strcpy(editor_path, &buf[7]);
 708
 709                 if (!strncasecmp(buf, "printcmd=", 9))
 710                         strcpy(printcmd, &buf[9]);
 711
 712                 if (!strncasecmp(buf, "expcmd=", 7))
 713                         strcpy(rc_exp_cmd, &buf[7]);
 714
 715                 if (!strncasecmp(buf, "local_screen_dimensions=", 24))
 716                         have_xterm = (char) atoi(&buf[24]);
 717
 718                 if (!strncasecmp(buf, "use_floors=", 11)) {
 719                         if (!strcasecmp(&buf[11], "yes"))
 720                                 rc_floor_mode = RC_YES;
 721                         if (!strcasecmp(&buf[11], "no"))
 722                                 rc_floor_mode = RC_NO;
 723                         if (!strcasecmp(&buf[11], "default"))
 724                                 rc_floor_mode = RC_DEFAULT;
 725                 }
 726                 if (!strncasecmp(buf, "beep=", 5)) {
 727                         rc_exp_beep = atoi(&buf[5]);
 728                 }
 729                 if (!strncasecmp(buf, "allow_attachments=", 18)) {
 730                         rc_allow_attachments = atoi(&buf[18]);
 731                 }
 732                 if (!strncasecmp(buf, "remember_passwords=", 19)) {
 733                         rc_remember_passwords = atoi(&buf[19]);
 734                 }
 735                 if (!strncasecmp(buf, "display_message_numbers=", 24)) {
 736                         rc_display_message_numbers = atoi(&buf[24]);
 737                 }
 738                 if (!strncasecmp(buf, "force_mail_prompts=", 19)) {
 739                         rc_force_mail_prompts = atoi(&buf[19]);
 740                 }
 741                 if (!strncasecmp(buf, "ansi_color=", 11)) {
 742                         if (!strncasecmp(&buf[11], "on", 2))
 743                                 rc_ansi_color = 1;
 744                         if (!strncasecmp(&buf[11], "auto", 4))
 745                                 rc_ansi_color = 2;      /* autodetect */
 746                         if (!strncasecmp(&buf[11], "user", 4))
 747                                 rc_ansi_color = 3;      /* user config */
 748                 }
 749                 if (!strncasecmp(buf, "username=", 9))
 750                         strcpy(rc_username, &buf[9]);
 751
 752                 if (!strncasecmp(buf, "password=", 9))
 753                         strcpy(rc_password, &buf[9]);
 754
 755                 if (!strncasecmp(buf, "urlcmd=", 7))
 756                         strcpy(rc_url_cmd, &buf[7]);
 757
 758                 if (!strncasecmp(buf, "cmd=", 4)) {
 759                         strcpy(buf, &buf[4]);
 760
 761                         cptr = (struct citcmd *) malloc(sizeof(struct citcmd));
 762
 763                         cptr->c_cmdnum = atoi(buf);
 764                         for (d = strlen(buf); d >= 0; --d)
 765                                 if (buf[d] == ',')
 766                                         b = d;
 767                         strcpy(buf, &buf[b + 1]);
 768
 769                         cptr->c_axlevel = atoi(buf);
 770                         for (d = strlen(buf); d >= 0; --d)
 771                                 if (buf[d] == ',')
 772                                         b = d;
 773                         strcpy(buf, &buf[b + 1]);
 774
 775                         for (a = 0; a < 5; ++a)
 776                                 cptr->c_keys[a][0] = 0;
 777
 778                         a = 0;
 779                         b = 0;
 780                         buf[strlen(buf) + 1] = 0;
 781                         while (strlen(buf) > 0) {
 782                                 b = strlen(buf);
 783                                 for (d = strlen(buf); d >= 0; --d)
 784                                         if (buf[d] == ',')
 785                                                 b = d;
 786                                 strncpy(cptr->c_keys[a], buf, b);
 787                                 cptr->c_keys[a][b] = 0;
 788                                 if (buf[b] == ',')
 789                                         strcpy(buf, &buf[b + 1]);
 790                                 else
 791                                         strcpy(buf, "");
 792                                 ++a;
 793                         }
 794
 795                         cptr->next = NULL;
 796                         if (cmdlist == NULL)
 797                                 cmdlist = cptr;
 798                         else
 799                                 lastcmd->next = cptr;
 800                         lastcmd = cptr;
 801                 }
 802         }
 803         fclose(ccfile);
 804 }
 805
 806
 807
 808 /*
 809  * return the key associated with a command
 810  */
 811 char keycmd(char *cmdstr)
 812 {
 813         int a;
 814
 815         for (a = 0; a < strlen(cmdstr); ++a)
 816                 if (cmdstr[a] == '&')
 817                         return (tolower(cmdstr[a + 1]));
 818         return (0);
 819 }
 820
 821
 822 /*
 823  * Output the string from a key command without the ampersand
 824  * "mode" should be set to 0 for normal or 1 for <C>ommand key highlighting
 825  */
 826 char *cmd_expand(char *strbuf, int mode)
 827 {
 828         int a;
 829         static char exp[64];
 830         char buf[256];
 831
 832         strcpy(exp, strbuf);
 833
 834         for (a = 0; a < strlen(exp); ++a) {
 835                 if (strbuf[a] == '&') {
 836
 837                         if (mode == 0) {
 838                                 strcpy(&exp[a], &exp[a + 1]);
 839                         }
 840                         if (mode == 1) {
 841                                 exp[a] = '<';
 842                                 strcpy(buf, &exp[a + 2]);
 843                                 exp[a + 2] = '>';
 844                                 exp[a + 3] = 0;
 845                                 strcat(exp, buf);
 846                         }
 847                 }
 848                 if (!strncmp(&exp[a], "^r", 2)) {
 849                         strcpy(buf, exp);
 850                         strcpy(&exp[a], room_name);
 851                         strcat(exp, &buf[a + 2]);
 852                 }
 853                 if (!strncmp(&exp[a], "^c", 2)) {
 854                         exp[a] = ',';
 855                         strcpy(&exp[a + 1], &exp[a + 2]);
 856                 }
 857         }
 858
 859         return (exp);
 860 }
 861
 862
 863
 864 /*
 865  * Comparison function to determine if entered commands match a
 866  * command loaded from the config file.
 867  */
 868 int cmdmatch(char *cmdbuf, struct citcmd *cptr, int ncomp)
 869 {
 870         int a;
 871         int cmdax;
 872
 873         cmdax = 0;
 874         if (is_room_aide)
 875                 cmdax = 1;
 876         if (axlevel >= 6)
 877                 cmdax = 2;
 878
 879         for (a = 0; a < ncomp; ++a) {
 880                 if ((tolower(cmdbuf[a]) != keycmd(cptr->c_keys[a]))
 881                     || (cptr->c_axlevel > cmdax))
 882                         return (0);
 883         }
 884         return (1);
 885 }
 886
 887
 888 /*
 889  * This function returns 1 if a given command requires a string input
 890  */
 891 int requires_string(struct citcmd *cptr, int ncomp)
 892 {
 893         int a;
 894         char buf[64];
 895
 896         strcpy(buf, cptr->c_keys[ncomp - 1]);
 897         for (a = 0; a < strlen(buf); ++a) {
 898                 if (buf[a] == ':')
 899                         return (1);
 900         }
 901         return (0);
 902 }
 903
 904
 905 /*
 906  * Input a command at the main prompt.
 907  * This function returns an integer command number.  If the command prompts
 908  * for a string then it is placed in the supplied buffer.
 909  */
 910 int getcmd(char *argbuf)
 911 {
 912         char cmdbuf[5];
 913         int cmdspaces[5];
 914         int cmdpos;
 915         int ch;
 916         int a;
 917         int got;
 918         int this_lazy_cmd;
 919         struct citcmd *cptr;
 920
 921         /*
 922          * Starting a new command now, so set sigcaught to 0.  This variable
 923          * is set to nonzero (usually NEXT_KEY or STOP_KEY) if a command has
 924          * been interrupted by a keypress.
 925          */
 926         sigcaught = 0;
 927
 928         /* Switch color support on or off if we're in user mode */
 929         if (rc_ansi_color == 3) {
 930                 if (userflags & US_COLOR)
 931                         enable_color = 1;
 932                 else
 933                         enable_color = 0;
 934         }
 935         /* if we're running in idiot mode, display a cute little menu */
 936         IFNEXPERT formout("mainmenu");
 937
 938         print_express();        /* print express messages if there are any */
 939         strcpy(argbuf, "");
 940         cmdpos = 0;
 941         for (a = 0; a < 5; ++a)
 942                 cmdbuf[a] = 0;
 943         /* now the room prompt... */
 944         ok_to_interrupt = 1;
 945         color(BRIGHT_WHITE);
 946         printf("\n%s", room_name);
 947         color(DIM_WHITE);
 948         printf("%c ", room_prompt(room_flags));
 949         fflush(stdout);
 950
 951         while (1) {
 952                 ch = inkey();
 953                 ok_to_interrupt = 0;
 954
 955                 /* Handle the backspace key, but only if there's something
 956                  * to backspace over...
 957                  */
 958                 if ((ch == 8) && (cmdpos > 0)) {
 959                         back(cmdspaces[cmdpos - 1] + 1);
 960                         cmdbuf[cmdpos] = 0;
 961                         --cmdpos;
 962                 }
 963                 /* Spacebar invokes "lazy traversal" commands */
 964                 if ((ch == 32) && (cmdpos == 0)) {
 965                         this_lazy_cmd = next_lazy_cmd;
 966                         if (this_lazy_cmd == 13)
 967                                 next_lazy_cmd = 5;
 968                         if (this_lazy_cmd == 5)
 969                                 next_lazy_cmd = 13;
 970                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
 971                                 if (cptr->c_cmdnum == this_lazy_cmd) {
 972                                         for (a = 0; a < 5; ++a)
 973                                                 if (cptr->c_keys[a][0] != 0)
 974                                                         printf("%s ", cmd_expand(
 975                                                                                         cptr->c_keys[a], 0));
 976                                         printf("\n");
 977                                         return (this_lazy_cmd);
 978                                 }
 979                         }
 980                         printf("\n");
 981                         return (this_lazy_cmd);
 982                 }
 983                 /* Otherwise, process the command */
 984                 cmdbuf[cmdpos] = tolower(ch);
 985
 986                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
 987                         if (cmdmatch(cmdbuf, cptr, cmdpos + 1)) {
 988
 989                                 printf("%s", cmd_expand(cptr->c_keys[cmdpos], 0));
 990                                 cmdspaces[cmdpos] = strlen(
 991                                     cmd_expand(cptr->c_keys[cmdpos], 0));
 992                                 if (cmdpos < 4)
 993                                         if ((cptr->c_keys[cmdpos + 1]) != 0)
 994                                                 putc(' ', stdout);
 995                                 ++cmdpos;
 996                         }
 997                 }
 998
 999                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1000                         if (cmdmatch(cmdbuf, cptr, 5)) {
1001                                 /* We've found our command. */
1002                                 if (requires_string(cptr, cmdpos)) {
1003                                         getline(argbuf, 32);
1004                                 } else {
1005                                         printf("\n");
1006                                 }
1007
1008                                 /* If this command is one that changes rooms,
1009                                  * then the next lazy-command (space bar)
1010                                  * should be "read new" instead of "goto"
1011                                  */
1012                                 if ((cptr->c_cmdnum == 5)
1013                                     || (cptr->c_cmdnum == 6)
1014                                     || (cptr->c_cmdnum == 47)
1015                                     || (cptr->c_cmdnum == 52)
1016                                     || (cptr->c_cmdnum == 16)
1017                                     || (cptr->c_cmdnum == 20))
1018                                         next_lazy_cmd = 13;
1019
1020                                 return (cptr->c_cmdnum);
1021
1022                         }
1023                 }
1024
1025                 if (ch == '?') {
1026                         printf("\rOne of ...                         \n");
1027                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1028                                 if (cmdmatch(cmdbuf, cptr, cmdpos)) {
1029                                         for (a = 0; a < 5; ++a) {
1030                                                 printf("%s ", cmd_expand(cptr->c_keys[a], 1));
1031                                         }
1032                                         printf("\n");
1033                                 }
1034                         }
1035
1036                         printf("\n%s%c ", room_name, room_prompt(room_flags));
1037                         got = 0;
1038                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
1039                                 if ((got == 0) && (cmdmatch(cmdbuf, cptr, cmdpos))) {
1040                                         for (a = 0; a < cmdpos; ++a) {
1041                                                 printf("%s ",
1042                                                        cmd_expand(cptr->c_keys[a], 0));
1043                                         }
1044                                         got = 1;
1045                                 }
1046                         }
1047                 }
1048         }
1049
1050 }
1051
1052
1053
1054
1055
1056 /*
1057  * set tty modes.  commands are:
1058  *
1059  * 01- set to bbs mode
1060  * 2 - save current settings for later restoral
1061  * 3 - restore saved settings
1062  */
1063 #ifdef HAVE_TERMIOS_H
1064 void sttybbs(int cmd)
1065 {                               /* SysV version of sttybbs() */
1066         struct termios live;
1067         static struct termios saved_settings;
1068         static int last_cmd = 0;
1069
1070         if (cmd == SB_LAST)
1071                 cmd = last_cmd;
1072         else
1073                 last_cmd = cmd;
1074
1075         if ((cmd == 0) || (cmd == 1)) {
1076                 tcgetattr(0, &live);
1077                 live.c_iflag = ISTRIP | IXON | IXANY;
1078                 live.c_oflag = OPOST | ONLCR;
1079                 live.c_lflag = ISIG | NOFLSH;
1080
1081                 live.c_cc[VINTR] = (-1);
1082                 live.c_cc[VQUIT] = (-1);
1083
1084 #ifdef hpux
1085                 live.c_cc[VMIN] = 0;
1086                 live.c_cc[VTIME] = 0;
1087 #endif
1088
1089                 /* do we even need this stuff anymore? */
1090                 /* live.c_line=0; */
1091                 live.c_cc[VERASE] = 8;
1092                 live.c_cc[VKILL] = 24;
1093                 live.c_cc[VEOF] = 1;
1094                 live.c_cc[VEOL] = 255;
1095                 live.c_cc[VEOL2] = 0;
1096                 live.c_cc[VSTART] = 0;
1097                 tcsetattr(0, TCSADRAIN, &live);
1098         }
1099         if (cmd == 2) {
1100                 tcgetattr(0, &saved_settings);
1101         }
1102         if (cmd == 3) {
1103                 tcsetattr(0, TCSADRAIN, &saved_settings);
1104         }
1105 }
1106 #else
1107 void sttybbs(int cmd)
1108 {                               /* BSD version of sttybbs() */
1109         struct sgttyb live;
1110         static struct sgttyb saved_settings;
1111
1112         if ((cmd == 0) || (cmd == 1)) {
1113                 gtty(0, &live);
1114                 live.sg_flags |= CBREAK;
1115                 live.sg_flags |= CRMOD;
1116                 live.sg_flags |= NL1;
1117                 live.sg_flags &= ~ECHO;
1118                 if (cmd == 1)
1119                         live.sg_flags |= NOFLSH;
1120                 stty(0, &live);
1121         }
1122         if (cmd == 2) {
1123                 gtty(0, &saved_settings);
1124         }
1125         if (cmd == 3) {
1126                 stty(0, &saved_settings);
1127         }
1128 }
1129 #endif
1130
1131
1132 /*
1133  * display_help()  -  help file viewer
1134  */
1135 void display_help(char *name)
1136 {
1137         formout(name);
1138 }
1139
1140
1141 /*
1142  * fmout()  -  Citadel text formatter and paginator
1143  */
1144 int fmout(
1145         int width,      /* screen width to use */
1146         FILE *fp,       /* file to read from, or NULL to read from server */
1147         char pagin,     /* nonzero if we should use the paginator */
1148         int height,     /* screen height to use */
1149         int starting_lp,/* starting value for lines_printed, -1 for global */
1150         char subst)     /* nonzero if we should use hypertext mode */
1151 {
1152         int a, b, c, d, old;
1153         int real = (-1);
1154         char aaa[140];
1155         char buffer[512];
1156         int eof_flag = 0;
1157
1158         num_urls = 0;   /* Start with a clean slate of embedded URL's */
1159
1160         if (starting_lp >= 0) {
1161                 lines_printed = starting_lp;
1162         }
1163         strcpy(aaa, "");
1164         old = 255;
1165         strcpy(buffer, "");
1166         c = 1;                  /* c is the current pos */
1167
1168 FMTA:   while ((eof_flag == 0) && (strlen(buffer) < 126)) {
1169                 if (fp != NULL) {       /* read from file */
1170                         if (feof(fp))
1171                                 eof_flag = 1;
1172                         if (eof_flag == 0) {
1173                                 a = getc(fp);
1174                                 buffer[strlen(buffer) + 1] = 0;
1175                                 buffer[strlen(buffer)] = a;
1176                         }
1177                 } else {        /* read from server */
1178                         d = strlen(buffer);
1179                         serv_gets(&buffer[d]);
1180                         while ((!isspace(buffer[d])) && (isspace(buffer[strlen(buffer) - 1])))
1181                                 buffer[strlen(buffer) - 1] = 0;
1182                         if (!strcmp(&buffer[d], "000")) {
1183                                 buffer[d] = 0;
1184                                 eof_flag = 1;
1185                                 while (isspace(buffer[strlen(buffer) - 1]))
1186                                         buffer[strlen(buffer) - 1] = 0;
1187                         }
1188                         d = strlen(buffer);
1189                         buffer[d] = 10;
1190                         buffer[d + 1] = 0;
1191                 }
1192         }
1193
1194         if ( (!strncasecmp(buffer, "http://", 7))
1195            || (!strncasecmp(buffer, "ftp://", 6)) ) {
1196                 safestrncpy(urls[num_urls], buffer, 255);
1197                 for (a=0; a<strlen(urls[num_urls]); ++a) {
1198                         b = urls[num_urls][a];
1199                         if ( (b==' ') || (b==')') || (b=='>') || (b==10)
1200                            || (b==13) || (b==9) || (b=='\"') )
1201                                 urls[num_urls][a] = 0;
1202                 }
1203                 ++num_urls;
1204         }
1205
1206         buffer[strlen(buffer) + 1] = 0;
1207         a = buffer[0];
1208         strcpy(buffer, &buffer[1]);
1209
1210         old = real;
1211         real = a;
1212         if (a <= 0)
1213                 goto FMTEND;
1214
1215         if (((a == 13) || (a == 10)) && (old != 13) && (old != 10))
1216                 a = 32;
1217         if (((old == 13) || (old == 10)) && (isspace(real))) {
1218                 printf("\n");
1219                 ++lines_printed;
1220                 lines_printed = checkpagin(lines_printed, pagin, height);
1221                 c = 1;
1222         }
1223         if (a > 126)
1224                 goto FMTA;
1225
1226         if (a > 32) {
1227                 if (((strlen(aaa) + c) > (width - 5)) && (strlen(aaa) > (width - 5))) {
1228                         printf("\n%s", aaa);
1229                         c = strlen(aaa);
1230                         aaa[0] = 0;
1231                         ++lines_printed;
1232                         lines_printed = checkpagin(lines_printed, pagin, height);
1233                 }
1234                 b = strlen(aaa);
1235                 aaa[b] = a;
1236                 aaa[b + 1] = 0;
1237         }
1238         if (a == 32) {
1239                 if ((strlen(aaa) + c) > (width - 5)) {
1240                         c = 1;
1241                         printf("\n");
1242                         ++lines_printed;
1243                         lines_printed = checkpagin(lines_printed, pagin, height);
1244                 }
1245                 printf("%s ", aaa);
1246                 ++c;
1247                 c = c + strlen(aaa);
1248                 strcpy(aaa, "");
1249                 goto FMTA;
1250         }
1251         if ((a == 13) || (a == 10)) {
1252                 printf("%s\n", aaa);
1253                 c = 1;
1254                 ++lines_printed;
1255                 lines_printed = checkpagin(lines_printed, pagin, height);
1256                 if (sigcaught) goto OOPS;
1257                 strcpy(aaa, "");
1258                 goto FMTA;
1259         }
1260         goto FMTA;
1261
1262         /* keypress caught; drain the server */
1263 OOPS:   do {
1264                 serv_gets(aaa);
1265         } while (strcmp(aaa, "000"));
1266
1267 FMTEND: printf("\n");
1268         ++lines_printed;
1269         lines_printed = checkpagin(lines_printed, pagin, height);
1270         return (sigcaught);
1271 }
1272
1273
1274 /*
1275  * support ANSI color if defined
1276  */
1277 void color(int colornum)
1278 {
1279         static int is_bold = 0;
1280         static int hold_color, current_color;
1281
1282         if (colornum == COLOR_PUSH) {
1283                 hold_color = current_color;
1284                 return;
1285         }
1286
1287         if (colornum == COLOR_POP) {
1288                 color(hold_color);
1289                 return;
1290         }
1291
1292         current_color = colornum;
1293         if (enable_color) {
1294                 /* When switching to dim white, actually output an 'original
1295                  * pair' sequence -- this looks better on black-on-white
1296                  * terminals.
1297                  */
1298                 if (colornum == DIM_WHITE)
1299                         printf("\033[39;49m");
1300                 else
1301                         printf("\033[3%d;40m", (colornum & 7));
1302
1303                 if ((colornum >= 8) && (is_bold == 0)) {
1304                         printf("\033[1m");
1305                         is_bold = 1;
1306                 } else if ((colornum < 8) && (is_bold == 1)) {
1307                         printf("\033[0m");
1308                         is_bold = 0;
1309                 }
1310                 fflush(stdout);
1311         }
1312 }
1313
1314 void cls(int colornum)
1315 {
1316         if (enable_color) {
1317                 printf("\033[4%dm\033[2J\033[H\033[0m", colornum);
1318                 fflush(stdout);
1319         }
1320 }
1321
1322
1323 /*
1324  * Detect whether ANSI color is available (answerback)
1325  */
1326 void send_ansi_detect(void)
1327 {
1328         if (rc_ansi_color == 2) {
1329                 printf("\033[c");
1330                 fflush(stdout);
1331                 time(&AnsiDetect);
1332         }
1333 }
1334
1335 void look_for_ansi(void)
1336 {
1337         fd_set rfds;
1338         struct timeval tv;
1339         char abuf[512];
1340         time_t now;
1341         int a;
1342
1343         if (rc_ansi_color == 0) {
1344                 enable_color = 0;
1345         } else if (rc_ansi_color == 1) {
1346                 enable_color = 1;
1347         } else if (rc_ansi_color == 2) {
1348
1349                 /* otherwise, do the auto-detect */
1350
1351                 strcpy(abuf, "");
1352
1353                 time(&now);
1354                 if ((now - AnsiDetect) < 2)
1355                         sleep(1);
1356
1357                 do {
1358                         FD_ZERO(&rfds);
1359                         FD_SET(0, &rfds);
1360                         tv.tv_sec = 0;
1361                         tv.tv_usec = 1;
1362
1363                         select(1, &rfds, NULL, NULL, &tv);
1364                         if (FD_ISSET(0, &rfds)) {
1365                                 abuf[strlen(abuf) + 1] = 0;
1366                                 read(0, &abuf[strlen(abuf)], 1);
1367                         }
1368                 } while (FD_ISSET(0, &rfds));
1369
1370                 for (a = 0; a < strlen(abuf); ++a) {
1371                         if ((abuf[a] == 27) && (abuf[a + 1] == '[')
1372                             && (abuf[a + 2] == '?')) {
1373                                 enable_color = 1;
1374                         }
1375                 }
1376         }
1377 }
1378
1379
1380 /*
1381  * Display key options (highlight hotkeys inside angle brackets)
1382  */
1383 void keyopt(char *buf) {
1384         int i;
1385
1386         color(DIM_WHITE);
1387         for (i=0; i<strlen(buf); ++i) {
1388                 if (buf[i]=='<') {
1389                         putc(buf[i], stdout);
1390                         color(BRIGHT_MAGENTA);
1391                 } else {
1392                         if (buf[i]=='>') {
1393                                 color(DIM_WHITE);
1394                         }
1395                         putc(buf[i], stdout);
1396                 }
1397         }
1398         color(DIM_WHITE);
1399 }
1400
1401
1402
1403 /*
1404  * Present a key-menu line choice type of thing
1405  */
1406 char keymenu(char *menuprompt, char *menustring) {
1407         int i, c, a;
1408         int choices;
1409         int do_prompt = 0;
1410         char buf[256];
1411         int ch;
1412         int display_prompt = 1;
1413
1414         choices = num_tokens(menustring, '|');
1415
1416         if (menuprompt != NULL) do_prompt = 1;
1417         if (menuprompt != NULL) if (strlen(menuprompt)==0) do_prompt = 0;
1418
1419         while (1) {
1420                 if (display_prompt) {
1421                         if (do_prompt) {
1422                                 printf("%s ", menuprompt);
1423                         }
1424                         else {
1425                                 for (i=0; i<choices; ++i) {
1426                                         extract(buf, menustring, i);
1427                                         keyopt(buf);
1428                                         printf(" ");
1429                                 }
1430                         }
1431                         printf(" -> ");
1432                         display_prompt = 0;
1433                 }
1434                 ch = lkey();
1435
1436                 if ( (do_prompt) && (ch=='?') ) {
1437                         printf("\rOne of...                               ");
1438                         printf("                                      \n");
1439                         for (i=0; i<choices; ++i) {
1440                                 extract(buf, menustring, i);
1441                                 printf("   ");
1442                                 keyopt(buf);
1443                                 printf("\n");
1444                         }
1445                         printf("\n");
1446                         display_prompt = 1;
1447                 }
1448
1449                 for (i=0; i<choices; ++i) {
1450                         extract(buf, menustring, i);
1451                         for (c=1; c<strlen(buf); ++c) {
1452                                 if ( (ch == tolower(buf[c]))
1453                                    && (buf[c-1]=='<')
1454                                    && (buf[c+1]=='>') ) {
1455                                         for (a=0; a<strlen(buf); ++a) {
1456                                                 if ( (a!=(c-1)) && (a!=(c+1))) {
1457                                                         putc(buf[a], stdout);
1458                                                 }
1459                                         }
1460                                         printf("\n\n");
1461                                         return ch;
1462                                 }
1463                         }
1464                 }
1465         }
1466 }