citadel/commands.c

   1 /*
   2  * Citadel/UX
   3  *
   4  * commands.c - front end for Citadel
   5  *
   6  * This version is the traditional command parser for room prompts.
   7  *
   8  * $Id$
   9  *
  10  */
  11
  12 #include "sysdep.h"
  13 #include <stdlib.h>
  14 #include <unistd.h>
  15 #include <stdio.h>
  16 #include <fcntl.h>
  17 #include <ctype.h>
  18 #include <string.h>
  19 #include <sys/types.h>
  20 #include <sys/time.h>
  21
  22 #ifdef HAVE_TERMIOS_H
  23 #include <termios.h>
  24 #else
  25 #include <sgtty.h>
  26 #endif
  27
  28 #ifdef HAVE_SYS_SELECT_H
  29 #include <sys/select.h>
  30 #endif
  31
  32
  33 #include <signal.h>
  34 #include <errno.h>
  35 #include "citadel.h"
  36 #include "commands.h"
  37 #include "messages.h"
  38 #include "citadel_decls.h"
  39 #include "routines.h"
  40 #include "routines2.h"
  41
  42 struct citcmd {
  43         struct citcmd *next;
  44         int c_cmdnum;
  45         int c_axlevel;
  46         char c_keys[5][64];
  47         };
  48
  49 #define IFNEXPERT if ((userflags&US_EXPERT)==0)
  50
  51
  52 int rc_exp_beep;
  53 char rc_exp_cmd[256];
  54 int rc_allow_attachments;
  55 int rc_display_message_numbers;
  56 int rc_force_mail_prompts;
  57 int rc_ansi_color;
  58
  59 char *gl_string;
  60 int next_lazy_cmd = 5;
  61
  62 struct citcmd *cmdlist = NULL;
  63
  64
  65 /* these variables are local to this module */
  66 char keepalives_enabled = KA_YES;       /* send NOOPs to server when idle */
  67 int ok_to_interrupt = 0;                /* print express msgs asynchronously */
  68 time_t AnsiDetect;                      /* when did we send the detect code? */
  69 int enable_color = 0;                   /* nonzero for ANSI color */
  70
  71
  72 /*
  73  * print_express()  -  print express messages if there are any
  74  */
  75 void print_express(void) {
  76         char buf[256];
  77         FILE *outpipe;
  78
  79         if (express_msgs == 0) return;
  80         printf("printing express messages\n");
  81         express_msgs = 0;
  82         serv_puts("PEXP");
  83         serv_gets(buf);
  84         if (buf[0]!='1') return;
  85
  86         if (strlen(rc_exp_cmd) > 0) {
  87                 outpipe = popen(rc_exp_cmd, "w");
  88                 if (outpipe != NULL) {
  89                         while (serv_gets(buf), strcmp(buf,"000")) {
  90                                 fprintf(outpipe, "%s\n", buf);
  91                                 }
  92                         pclose(outpipe);
  93                         return;
  94                         }
  95                 }
  96
  97         /* fall back to built-in express message display */
  98         if (rc_exp_beep) {
  99                 putc(7,stdout);
 100                 }
 101         color(1);
 102         printf("---\n");
 103         while (serv_gets(buf), strcmp(buf,"000")) {
 104                 printf("%s\n",buf);
 105                 }
 106         printf("---\n");
 107         color(7);
 108         }
 109
 110
 111 void set_keepalives(int s)
 112 {
 113         keepalives_enabled = (char)s;
 114         }
 115
 116 /*
 117  * This loop handles the "keepalive" messages sent to the server when idling.
 118  */
 119 void do_keepalive(void) {
 120         char buf[256];
 121         static time_t idlet = 0;
 122         time_t now;
 123
 124         time(&now);
 125         if ((now - idlet) < ((long)S_KEEPALIVE)) return;
 126         time(&idlet);
 127
 128         /* Do a space-backspace to keep socksified telnet sessions open */
 129         printf(" %c", 8);
 130         fflush(stdout);
 131
 132         if (keepalives_enabled != KA_NO) {
 133                 serv_puts("NOOP");
 134                 if (keepalives_enabled == KA_YES) {
 135                         serv_gets(buf);
 136                         if (buf[3]=='*') {
 137                                 express_msgs = 1;
 138                                 if (ok_to_interrupt == 1) {
 139                                         printf("\r%64s\r", "");
 140                                         print_express();
 141                                         printf("%s%c ",room_name,
 142                                                 room_prompt(room_flags));
 143                                         fflush(stdout);
 144                                         }
 145                                 }
 146                         }
 147                 }
 148         }
 149
 150
 151 int inkey(void) {               /* get a character from the keyboard, with   */
 152         int a;          /* the watchdog timer in effect if necessary */
 153         fd_set rfds;
 154         struct timeval tv;
 155         time_t start_time, now;
 156         char inbuf[2];
 157
 158         time(&start_time);
 159
 160         do {
 161
 162                 /* This loop waits for keyboard input.  If the keepalive
 163                  * timer expires, it sends a keepalive to the server if
 164                  * necessary and then waits again.
 165                  */
 166                 do {
 167                         do_keepalive();
 168                         fflush(stdout);
 169                         FD_ZERO(&rfds);
 170                         FD_SET(0,&rfds);
 171                         tv.tv_sec = S_KEEPALIVE;
 172                         tv.tv_usec = 0;
 173
 174                         time(&now);
 175                         if (((now-start_time) > SLEEPING)
 176                            && (SLEEPING != 0) && (getppid()==1)) {
 177                                 printf("Sleeping? Call again.\n");
 178                                 logoff(SIGALRM);
 179                                 }
 180
 181                         select(1, &rfds, NULL, NULL, &tv);
 182                         } while (!FD_ISSET(0, &rfds));
 183
 184
 185
 186
 187                 /* At this point, there's input, so fetch it.
 188                  * (There's a hole in the bucket...)
 189                  */
 190                 read(0, inbuf, 1);
 191                 a = inbuf[0];
 192                 if (a==127) a=8;
 193                 if (a>126) a=0;
 194                 if (a==10) a=13;
 195                 if (((a!=4)&&(a!=13)&&(a!=8)&&(a!=NEXT_KEY)&&(a!=STOP_KEY))
 196                         && ((a<32)||(a>126))) a=0;
 197                 } while(a==0);
 198         return(a);
 199         }
 200
 201
 202 int yesno(void) { /* Returns 1 for yes, 0 for no */
 203 int a;
 204         while (1) {
 205                 a=inkey(); a=tolower(a);
 206                 if (a=='y') { printf("Yes\n"); return(1); }
 207                 if (a=='n') { printf("No\n");  return(0); }
 208                 }
 209         }
 210
 211 int yesno_d(int d) /* Returns 1 for yes, 0 for no, arg is default value */
 212        {
 213 int a;
 214         while (1) {
 215                 a=inkey(); a=tolower(a);
 216                 if (a==13) a=(d ? 'y' : 'n');
 217                 if (a=='y') { printf("Yes\n"); return(1); }
 218                 if (a=='n') { printf("No\n");  return(0); }
 219                 }
 220         }
 221
 222
 223
 224
 225 void getline(char *string, int lim)     /* Gets a line from the terminal */
 226                         /* Pointer to string buffer */
 227                         /* Maximum length - if negative, no-show */
 228 {
 229         int a,b;
 230         char flag = 0;
 231
 232         if (lim<0) { lim=(0-lim); flag=1; }
 233         strcpy(string,"");
 234         gl_string = string;
 235 GLA:    a=inkey(); a=(a&127);
 236         if ((a==8)&&(strlen(string)==0)) goto GLA;
 237         if ((a!=13)&&(a!=8)&&(strlen(string)==lim)) goto GLA;
 238         if ((a==8)&&(string[0]!=0)) {
 239                 string[strlen(string)-1]=0;
 240                 putc(8,stdout); putc(32,stdout); putc(8,stdout); goto GLA; }
 241         if ((a==13)||(a==10)) {
 242                 putc(13,stdout);
 243                 putc(10,stdout);
 244                 return;
 245                 }
 246         if (a<32) a='.';
 247         b=strlen(string);
 248         string[b]=a;
 249         string[b+1]=0;
 250         if (flag==0) putc(a,stdout);
 251         if (flag==1) putc('*',stdout);
 252         goto GLA;
 253         }
 254
 255
 256 /*
 257  * strprompt()  -  prompt for a string, print the existing value and
 258  *                 allow the user to press return to keep it...
 259  */
 260 void strprompt(char *prompt, char *str, int len)
 261 {
 262         char buf[128];
 263         print_express();
 264         color(3);
 265         printf("%s [", prompt);
 266         color(1);
 267         printf("%s", str);
 268         color(3);
 269         printf("]: ");
 270         color(2);
 271         getline(buf,len);
 272         color(7);
 273         if (buf[0]!=0) strcpy(str,buf);
 274         }
 275
 276 /*
 277  * boolprompt()  -  prompt for a yes/no, print the existing value and
 278  *                  allow the user to press return to keep it...
 279  */
 280 int boolprompt(char *prompt, int prev_val) {
 281         color(3);
 282         printf("%s [", prompt);
 283         color(1);
 284         printf("%s", (prev_val ? "Yes" : "No"));
 285         color(3);
 286         printf("]: ");
 287         color(7);
 288         return(yesno_d(prev_val));
 289         }
 290
 291 /*
 292  * intprompt()  -  like strprompt(), except for an integer
 293  *                 (note that it RETURNS the new value!)
 294  */
 295 int intprompt(char *prompt, int ival, int imin, int imax)
 296 {
 297         char buf[16];
 298         int i;
 299         i = ival;
 300         do {
 301                 snprintf(buf,sizeof buf,"%d",i);
 302                 strprompt(prompt,buf,15);
 303                 i=atoi(buf);
 304                 if (i<imin) printf("*** Must be no less than %d.\n",imin);
 305                 if (i>imax) printf("*** Must be no more than %d.\n",imax);
 306                 } while((i<imin)||(i>imax));
 307         return(i);
 308         }
 309
 310 /*
 311  * newprompt()  -  prompt for a string with no existing value
 312  *                 (clears out string buffer first)
 313  */
 314 void newprompt(char *prompt, char *str, int len)
 315 {
 316         color(3);
 317         printf("%s",prompt);
 318         color(2);
 319         getline(str,len);
 320         color(7);
 321         }
 322
 323
 324 int lkey(void) {        /* returns a lower case value */
 325         int a;
 326         a=inkey();
 327         if (isupper(a)) a=tolower(a);
 328         return(a);
 329         }
 330
 331 /*
 332  * parse the citadel.rc file
 333  */
 334 void load_command_set(void) {
 335         FILE *ccfile;
 336         char buf[256];
 337         struct citcmd *cptr;
 338         struct citcmd *lastcmd = NULL;
 339         int a,d;
 340         int b = 0;
 341
 342
 343         /* first, set up some defaults for non-required variables */
 344
 345         strcpy(editor_path,"");
 346         strcpy(printcmd,"");
 347         strcpy(rc_username,"");
 348         strcpy(rc_password,"");
 349         rc_floor_mode = 0;
 350         rc_exp_beep = 1;
 351         rc_allow_attachments = 0;
 352         strcpy(rc_exp_cmd, "");
 353         rc_display_message_numbers = 0;
 354         rc_force_mail_prompts = 0;
 355         rc_ansi_color = 0;
 356
 357         /* now try to open the citadel.rc file */
 358
 359         ccfile = NULL;
 360         if (getenv("HOME") != NULL) {
 361                 snprintf(buf,sizeof buf,"%s/.citadelrc",getenv("HOME"));
 362                 ccfile = fopen(buf,"r");
 363                 }
 364         if (ccfile==NULL) {
 365                 ccfile = fopen("/usr/local/lib/citadel.rc","r");
 366                 }
 367         if (ccfile==NULL) {
 368                 snprintf(buf,sizeof buf,"%s/citadel.rc",BBSDIR);
 369                 ccfile = fopen(buf,"r");
 370                 }
 371         if (ccfile==NULL) {
 372                 perror("commands: cannot open citadel.rc");
 373                 logoff(errno);
 374                 }
 375
 376         while (fgets(buf, 256, ccfile) != NULL) {
 377             while ( (strlen(buf)>0) ? (isspace(buf[strlen(buf)-1])) : 0 )
 378                 buf[strlen(buf)-1] = 0;
 379
 380             if (!struncmp(buf,"editor=",7))
 381                 strcpy(editor_path,&buf[7]);
 382
 383             if (!struncmp(buf,"printcmd=",9))
 384                 strcpy(printcmd,&buf[9]);
 385
 386             if (!struncmp(buf,"expcmd=",7))
 387                 strcpy(rc_exp_cmd,&buf[7]);
 388
 389             if (!struncmp(buf,"local_screen_dimensions=",24))
 390                 have_xterm = (char)atoi(&buf[24]);
 391
 392             if (!struncmp(buf,"use_floors=",11)) {
 393                 if (!strucmp(&buf[11],"yes")) rc_floor_mode = RC_YES;
 394                 if (!strucmp(&buf[11],"no")) rc_floor_mode = RC_NO;
 395                 if (!strucmp(&buf[11],"default")) rc_floor_mode = RC_DEFAULT;
 396                 }
 397
 398             if (!struncmp(buf,"beep=",5)) {
 399                 rc_exp_beep = atoi(&buf[5]);
 400                 }
 401
 402             if (!struncmp(buf,"allow_attachments=", 18)) {
 403                 rc_allow_attachments = atoi(&buf[18]);
 404                 }
 405
 406             if (!struncmp(buf,"display_message_numbers=", 24)) {
 407                 rc_display_message_numbers = atoi(&buf[24]);
 408                 }
 409
 410             if (!struncmp(buf,"force_mail_prompts=", 19)) {
 411                 rc_force_mail_prompts = atoi(&buf[19]);
 412                 }
 413
 414             if (!struncmp(buf,"ansi_color=", 11)) {
 415                 if (!strncasecmp(&buf[11], "on", 2))
 416                         rc_ansi_color = 1;
 417                 if (!strncasecmp(&buf[11], "auto", 4))
 418                         rc_ansi_color = 2;      /* autodetect */
 419                 if (!strncasecmp(&buf[11], "user", 4))
 420                         rc_ansi_color = 3;      /* user config */
 421                 }
 422
 423             if (!struncmp(buf,"username=",9))
 424                 strcpy(rc_username,&buf[9]);
 425
 426             if (!struncmp(buf,"password=",9))
 427                 strcpy(rc_password,&buf[9]);
 428
 429             if (!struncmp(buf,"cmd=",4)) {
 430                 strcpy(buf,&buf[4]);
 431
 432                 cptr = (struct citcmd *) malloc (sizeof(struct citcmd));
 433
 434                 cptr->c_cmdnum = atoi (buf);
 435                 for (d=strlen(buf); d>=0; --d)
 436                         if (buf[d]==',') b=d;
 437                 strcpy (buf, &buf[b+1]);
 438
 439                 cptr->c_axlevel = atoi (buf);
 440                 for (d=strlen(buf); d>=0; --d)
 441                         if (buf[d]==',') b=d;
 442                 strcpy (buf, &buf[b+1]);
 443
 444                 for (a=0; a<5; ++a) cptr->c_keys[a][0] = 0;
 445
 446                 a = 0;  b = 0;
 447                 buf[strlen(buf)+1] = 0;
 448                 while (strlen(buf) > 0) {
 449                         b = strlen(buf);
 450                         for (d=strlen(buf); d>=0; --d)
 451                                 if (buf[d]==',') b=d;
 452                         strncpy(cptr->c_keys[a],buf,b);
 453                         cptr->c_keys[a][b] = 0;
 454                         if (buf[b]==',')
 455                                 strcpy(buf,&buf[b+1]);
 456                         else
 457                                 strcpy(buf,"");
 458                         ++a;
 459                         }
 460
 461                 cptr->next = NULL;
 462                 if (cmdlist == NULL) cmdlist = cptr;
 463                 else lastcmd->next = cptr;
 464                 lastcmd = cptr;
 465                 }
 466             }
 467         fclose(ccfile);
 468         }
 469
 470
 471
 472 /*
 473  * return the key associated with a command
 474  */
 475 char keycmd(char *cmdstr)
 476 {
 477         int a;
 478
 479         for (a=0; a<strlen(cmdstr); ++a)
 480                 if (cmdstr[a]=='&')
 481                         return(tolower(cmdstr[a+1]));
 482         return(0);
 483         }
 484
 485
 486 /*
 487  * Output the string from a key command without the ampersand
 488  * "mode" should be set to 0 for normal or 1 for <C>ommand key highlighting
 489  */
 490 char *cmd_expand(char *strbuf, int mode)
 491 {
 492         int a;
 493         static char exp[64];
 494         char buf[256];
 495
 496         strcpy(exp,strbuf);
 497
 498         for (a=0; a<strlen(exp); ++a) {
 499                 if (strbuf[a] == '&') {
 500
 501                     if (mode == 0) {
 502                         strcpy(&exp[a],&exp[a+1]);
 503                         }
 504
 505                     if (mode == 1) {
 506                         exp[a] = '<';
 507                         strcpy(buf,&exp[a+2]);
 508                         exp[a+2] = '>';
 509                         exp[a+3] = 0;
 510                         strcat(exp,buf);
 511                         }
 512
 513                     }
 514
 515                 if (!strncmp(&exp[a],"^r",2)) {
 516                         strcpy(buf,exp);
 517                         strcpy(&exp[a],room_name);
 518                         strcat(exp,&buf[a+2]);
 519                         }
 520
 521                 if (!strncmp(&exp[a],"^c",2)) {
 522                         exp[a] = ',';
 523                         strcpy(&exp[a+1],&exp[a+2]);
 524                         }
 525
 526                 }
 527
 528         return(exp);
 529         }
 530
 531
 532
 533 /*
 534  * Comparison function to determine if entered commands match a
 535  * command loaded from the config file.
 536  */
 537 int cmdmatch(char *cmdbuf, struct citcmd *cptr, int ncomp)
 538 {
 539         int a;
 540         int cmdax;
 541
 542         cmdax = 0;
 543         if (is_room_aide) cmdax = 1;
 544         if (axlevel >=6) cmdax = 2;
 545
 546         for (a=0; a<ncomp; ++a) {
 547                 if ( (tolower(cmdbuf[a]) != keycmd(cptr->c_keys[a]))
 548                    || (cptr->c_axlevel > cmdax) )
 549                         return(0);
 550                 }
 551         return(1);
 552         }
 553
 554
 555 /*
 556  * This function returns 1 if a given command requires a string input
 557  */
 558 int requires_string(struct citcmd *cptr, int ncomp)
 559 {
 560         int a;
 561         char buf[64];
 562
 563         strcpy(buf,cptr->c_keys[ncomp-1]);
 564         for (a=0; a<strlen(buf); ++a) {
 565                 if (buf[a]==':') return(1);
 566                 }
 567         return(0);
 568         }
 569
 570
 571 /*
 572  * Input a command at the main prompt.
 573  * This function returns an integer command number.  If the command prompts
 574  * for a string then it is placed in the supplied buffer.
 575  */
 576 int getcmd(char *argbuf)
 577 {
 578         char cmdbuf[5];
 579         int cmdspaces[5];
 580         int cmdpos;
 581         int ch;
 582         int a;
 583         int got;
 584         int this_lazy_cmd;
 585         struct citcmd *cptr;
 586
 587         /* Switch color support on or off if we're in user mode */
 588         if (rc_ansi_color == 3) {
 589                 if (userflags & US_COLOR) enable_color = 1;
 590                 else enable_color = 0;
 591                 }
 592
 593         /* if we're running in idiot mode, display a cute little menu */
 594         IFNEXPERT formout("mainmenu");
 595
 596         print_express(); /* print express messages if there are any */
 597         strcpy(argbuf, "");
 598         cmdpos = 0;
 599         for (a=0; a<5; ++a) cmdbuf[a]=0;
 600         /* now the room prompt... */
 601         ok_to_interrupt = 1;
 602         printf("\n%s%c ",room_name,room_prompt(room_flags));
 603         fflush(stdout);
 604
 605         while(1) {
 606                 ch = inkey();
 607                 ok_to_interrupt = 0;
 608
 609                 /* Handle the backspace key, but only if there's something
 610                  * to backspace over...
 611                  */
 612                 if ( (ch == 8) && (cmdpos > 0) ) {
 613                         back(cmdspaces[cmdpos-1] + 1);
 614                         cmdbuf[cmdpos] = 0;
 615                         --cmdpos;
 616                         }
 617
 618                 /* Spacebar invokes "lazy traversal" commands */
 619                 if ( (ch == 32) && (cmdpos == 0) ) {
 620                         this_lazy_cmd = next_lazy_cmd;
 621                         if (this_lazy_cmd == 13) next_lazy_cmd = 5;
 622                         if (this_lazy_cmd == 5) next_lazy_cmd = 13;
 623                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
 624                                 if (cptr->c_cmdnum == this_lazy_cmd) {
 625                                         for (a=0; a<5; ++a)
 626                                             if (cptr->c_keys[a][0] != 0)
 627                                                 printf("%s ", cmd_expand(
 628                                                         cptr->c_keys[a], 0));
 629                                         printf("\n");
 630                                         return(this_lazy_cmd);
 631                                         }
 632                                 }
 633                         printf("\n");
 634                         return(this_lazy_cmd);
 635                         }
 636
 637                 /* Otherwise, process the command */
 638                 cmdbuf[cmdpos] = tolower(ch);
 639
 640                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
 641                         if (cmdmatch(cmdbuf,cptr,cmdpos+1)) {
 642
 643                                 printf("%s",cmd_expand(cptr->c_keys[cmdpos],0));
 644                                 cmdspaces[cmdpos] = strlen(
 645                                         cmd_expand(cptr->c_keys[cmdpos],0) );
 646                                 if (cmdpos<4)
 647                                         if ((cptr->c_keys[cmdpos+1]) != 0)
 648                                                 putc(' ',stdout);
 649                                 ++cmdpos;
 650                                 }
 651                         }
 652
 653                 for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
 654                         if (cmdmatch(cmdbuf,cptr,5)) {
 655                                 /* We've found our command. */
 656                                 if (requires_string(cptr,cmdpos)) {
 657                                         getline(argbuf,32);
 658                                         }
 659                                 else {
 660                                         printf("\n");
 661                                         }
 662
 663                                 /* If this command is one that changes rooms,
 664                                  * then the next lazy-command (space bar)
 665                                  * should be "read new" instead of "goto"
 666                                  */
 667                                 if ((cptr->c_cmdnum==5)
 668                                         ||(cptr->c_cmdnum==6)
 669                                         ||(cptr->c_cmdnum==47)
 670                                         ||(cptr->c_cmdnum==52)
 671                                         ||(cptr->c_cmdnum==16)
 672                                         ||(cptr->c_cmdnum==20))
 673                                                 next_lazy_cmd = 13;
 674
 675                                 return(cptr->c_cmdnum);
 676
 677                                 }
 678                         }
 679
 680                 if (ch == '?') {
 681                         printf("\rOne of ...                         \n");
 682                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
 683                             if (cmdmatch(cmdbuf,cptr,cmdpos)) {
 684                                 for (a=0; a<5; ++a) {
 685                                     printf("%s ",cmd_expand(cptr->c_keys[a],1));
 686                                     }
 687                                 printf("\n");
 688                                 }
 689                             }
 690
 691                         printf("\n%s%c ",room_name,room_prompt(room_flags));
 692                         got = 0;
 693                         for (cptr = cmdlist; cptr != NULL; cptr = cptr->next) {
 694                             if ((got==0)&&(cmdmatch(cmdbuf,cptr,cmdpos))) {
 695                                 for (a=0; a<cmdpos; ++a) {
 696                                     printf("%s ",
 697                                         cmd_expand(cptr->c_keys[a],0));
 698                                     }
 699                                 got = 1;
 700                                 }
 701                             }
 702                         }
 703
 704                 }
 705
 706         }
 707
 708
 709
 710
 711
 712 /*
 713  * set tty modes.  commands are:
 714  *
 715  * 0 - set to bbs mode, intr/quit disabled
 716  * 1 - set to bbs mode, intr/quit enabled
 717  * 2 - save current settings for later restoral
 718  * 3 - restore saved settings
 719  */
 720 #ifdef HAVE_TERMIOS_H
 721 void sttybbs(int cmd)           /* SysV version of sttybbs() */
 722          {
 723         struct termios live;
 724         static struct termios saved_settings;
 725         static int last_cmd = 0;
 726
 727         if (cmd == SB_LAST)
 728                 cmd = last_cmd;
 729         else
 730                 last_cmd = cmd;
 731
 732         if ( (cmd == 0) || (cmd == 1) ) {
 733                 tcgetattr(0,&live);
 734                 live.c_iflag=ISTRIP|IXON|IXANY;
 735                 live.c_oflag=OPOST|ONLCR;
 736                 live.c_lflag=ISIG|NOFLSH;
 737
 738                 if (cmd==SB_YES_INTR) {
 739                         live.c_cc[VINTR]=NEXT_KEY;
 740                         live.c_cc[VQUIT]=STOP_KEY;
 741                         signal(SIGINT,*sighandler);
 742                         signal(SIGQUIT,*sighandler);
 743                         }
 744                 else {
 745                         signal(SIGINT,SIG_IGN);
 746                         signal(SIGQUIT,SIG_IGN);
 747                         live.c_cc[VINTR]=(-1);
 748                         live.c_cc[VQUIT]=(-1);
 749                         }
 750
 751                 /* do we even need this stuff anymore? */
 752                 /* live.c_line=0; */
 753                 live.c_cc[VERASE]=8;
 754                 live.c_cc[VKILL]=24;
 755                 live.c_cc[VEOF]=1;
 756                 live.c_cc[VEOL]=255;
 757                 live.c_cc[VEOL2]=0;
 758                 live.c_cc[VSTART]=0;
 759                 tcsetattr(0,TCSADRAIN,&live);
 760                 }
 761         if (cmd == 2) {
 762                 tcgetattr(0,&saved_settings);
 763                 }
 764         if (cmd == 3) {
 765                 tcsetattr(0,TCSADRAIN,&saved_settings);
 766                 }
 767         }
 768 #else
 769 void sttybbs(int cmd)           /* BSD version of sttybbs() */
 770 {
 771         struct sgttyb live;
 772         static struct sgttyb saved_settings;
 773
 774         if ( (cmd == 0) || (cmd == 1) ) {
 775                 gtty(0,&live);
 776                 live.sg_flags |= CBREAK;
 777                 live.sg_flags |= CRMOD;
 778                 live.sg_flags |= NL1;
 779                 live.sg_flags &= ~ECHO;
 780                 if (cmd==1) live.sg_flags |= NOFLSH;
 781                 stty(0,&live);
 782                 }
 783         if (cmd == 2) {
 784                 gtty(0,&saved_settings);
 785                 }
 786         if (cmd == 3) {
 787                 stty(0,&saved_settings);
 788                 }
 789         }
 790 #endif
 791
 792
 793 /*
 794  * display_help()  -  help file viewer
 795  */
 796 void display_help(char *name)
 797 {
 798         formout(name);
 799         }
 800
 801
 802 /*
 803  * fmout()  -  Citadel text formatter and paginator
 804  */
 805 int fmout(int width, FILE *fp, char pagin, int height, int starting_lp, char subst)
 806                         /* screen width to use */
 807                         /* file to read from, or NULL to read from server */
 808                         /* nonzero if we should use the paginator */
 809                         /* screen height to use */
 810                         /* starting value for lines_printed, -1 for global */
 811                         /* nonzero if we should use hypertext mode */
 812         {
 813         int a,b,c,d,old;
 814         int real = (-1);
 815         char aaa[140];
 816         char buffer[512];
 817         int eof_flag = 0;
 818
 819         if (starting_lp >= 0) {
 820                 lines_printed = starting_lp;
 821                 }
 822         strcpy(aaa,""); old=255;
 823         strcpy(buffer,"");
 824         c=1; /* c is the current pos */
 825
 826         sigcaught = 0;
 827         sttybbs(1);
 828
 829 FMTA:   while ( (eof_flag==0) && (strlen(buffer)<126) ) {
 830                 if (sigcaught) goto OOPS;
 831                 if (fp!=NULL) { /* read from file */
 832                         if (feof(fp)) eof_flag = 1;
 833                         if (eof_flag==0) {
 834                                 a=getc(fp);
 835                                 buffer[strlen(buffer)+1] = 0;
 836                                 buffer[strlen(buffer)] = a;
 837                                 }
 838                         }
 839                 else {          /* read from server */
 840                         d=strlen(buffer);
 841                         serv_gets(&buffer[d]);
 842 while ( (!isspace(buffer[d])) && (isspace(buffer[strlen(buffer)-1])) )
 843         buffer[strlen(buffer)-1]=0;
 844                         if (!strcmp(&buffer[d],"000")) {
 845                                 buffer[d] = 0;
 846                                 eof_flag = 1;
 847                                 while(isspace(buffer[strlen(buffer)-1]))
 848                                         buffer[strlen(buffer)-1] = 0;
 849                                 }
 850                         d=strlen(buffer);
 851                         buffer[d] = 10;
 852                         buffer[d+1] = 0;
 853                         }
 854                 }
 855
 856         buffer[strlen(buffer)+1] = 0;
 857         a=buffer[0];
 858         strcpy(buffer,&buffer[1]);
 859
 860         old=real;
 861         real=a;
 862         if (a<=0) goto FMTEND;
 863
 864         if ( ((a==13)||(a==10)) && (old!=13) && (old!=10) ) a=32;
 865         if ( ((old==13)||(old==10)) && (isspace(real)) ) {
 866                 printf("\n");
 867                 ++lines_printed;
 868                 lines_printed = checkpagin(lines_printed,pagin,height);
 869                 c=1;
 870                 }
 871         if (a>126) goto FMTA;
 872
 873         if (a>32) {
 874         if ( ((strlen(aaa)+c)>(width-5)) && (strlen(aaa)>(width-5)) ) {
 875                 printf("\n%s",aaa); c=strlen(aaa); aaa[0]=0;
 876                 ++lines_printed;
 877                 lines_printed = checkpagin(lines_printed,pagin,height);
 878                 }
 879             b=strlen(aaa); aaa[b]=a; aaa[b+1]=0;
 880             }
 881         if (a==32) {
 882                 if ((strlen(aaa)+c)>(width-5)) {
 883                         c=1;
 884                         printf("\n");
 885                         ++lines_printed;
 886                         lines_printed = checkpagin(lines_printed,pagin,height);
 887                         }
 888                 printf("%s ",aaa); ++c; c=c+strlen(aaa);
 889                 strcpy(aaa,"");
 890                 goto FMTA;
 891                 }
 892         if ((a==13)||(a==10)) {
 893                 printf("%s\n",aaa);
 894                 c=1;
 895                 ++lines_printed;
 896                 lines_printed = checkpagin(lines_printed,pagin,height);
 897                 strcpy(aaa,"");
 898                 goto FMTA;
 899                 }
 900         goto FMTA;
 901
 902         /* signal caught; drain the server */
 903 OOPS:   do {
 904                 serv_gets(aaa);
 905                 } while(strcmp(aaa,"000"));
 906
 907 FMTEND: printf("\n");
 908         ++lines_printed;
 909         lines_printed = checkpagin(lines_printed,pagin,height);
 910         return(sigcaught);
 911 }
 912
 913
 914 /*
 915  * support ANSI color if defined
 916  */
 917 void color(int colornum)
 918 {
 919         if (enable_color) {
 920                 printf("\033[3%dm", colornum);
 921                 fflush(stdout);
 922                 }
 923         }
 924
 925 void cls(int colornum) {
 926         if (enable_color) {
 927                 printf("\033[4%dm\033[2J\033[H", colornum);
 928                 printf("\033[0m"); /* change to 1 for bold colours */
 929                 fflush(stdout);
 930                 }
 931         }
 932
 933
 934 /*
 935  * Detect whether ANSI color is available (answerback)
 936  */
 937 void send_ansi_detect(void) {
 938         if (rc_ansi_color == 2) {
 939                 printf("\033[c");
 940                 fflush(stdout);
 941                 time(&AnsiDetect);
 942                 }
 943         }
 944
 945 void look_for_ansi(void) {
 946         fd_set rfds;
 947         struct timeval tv;
 948         char abuf[512];
 949         time_t now;
 950         int a;
 951
 952         if (rc_ansi_color == 0) {
 953                 enable_color = 0;
 954                 }
 955         else if (rc_ansi_color == 1) {
 956                 enable_color = 1;
 957                 }
 958         else if (rc_ansi_color == 2) {
 959
 960                 /* otherwise, do the auto-detect */
 961
 962                 strcpy(abuf, "");
 963
 964                 time(&now);
 965                 if ( (now - AnsiDetect) < 2 ) sleep(1);
 966
 967                 do {
 968                         FD_ZERO(&rfds);
 969                         FD_SET(0,&rfds);
 970                         tv.tv_sec = 0;
 971                         tv.tv_usec = 1;
 972
 973                         select(1, &rfds, NULL, NULL, &tv);
 974                         if (FD_ISSET(0, &rfds)) {
 975                                 abuf[strlen(abuf)+1] = 0;
 976                                 read(0, &abuf[strlen(abuf)], 1);
 977                                 }
 978
 979                         } while (FD_ISSET(0, &rfds));
 980
 981                 for (a=0; a<strlen(abuf); ++a) {
 982                         if ( (abuf[a] == 27) && (abuf[a+1] == '[')
 983                         && (abuf[a+2] == '?') ) {
 984                                 enable_color = 1;
 985                                 }
 986                         }
 987                 }
 988
 989         }