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