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