diplodocus.org Git - nmh/blob - uip/mhlsbr.c

   1
   2 /*
   3  * mhlsbr.c -- main routines for nmh message lister
   4  *
   5  * $Id$
   6  */
   7
   8 #include <h/mh.h>
   9 #include <h/signals.h>
  10 #include <h/addrsbr.h>
  11 #include <h/fmt_scan.h>
  12 #include <zotnet/tws/tws.h>
  13 #include <setjmp.h>
  14 #include <signal.h>
  15
  16 /*
  17  * MAJOR BUG:
  18  * for a component containing addresses, ADDRFMT, if COMPRESS is also
  19  * set, then addresses get split wrong (not at the spaces between commas).
  20  * To fix this correctly, putstr() should know about "atomic" strings that
  21  * must NOT be broken across lines.  That's too difficult for right now
  22  * (it turns out that there are a number of degernate cases), so in
  23  * oneline(), instead of
  24  *
  25  *       (*onelp == '\n' && !onelp[1])
  26  *
  27  * being a terminating condition,
  28  *
  29  *       (*onelp == '\n' && (!onelp[1] || (flags & ADDRFMT)))
  30  *
  31  * is used instead.  This cuts the line prematurely, and gives us a much
  32  * better chance of getting things right.
  33  */
  34
  35 #define ONECOMP  0
  36 #define TWOCOMP  1
  37 #define BODYCOMP 2
  38
  39 #define QUOTE   '\\'
  40
  41 static struct swit mhlswitches[] = {
  42 #define BELLSW         0
  43     { "bell", 0 },
  44 #define NBELLSW        1
  45     { "nobell", 0 },
  46 #define CLRSW          2
  47     { "clear", 0 },
  48 #define NCLRSW         3
  49     { "noclear", 0 },
  50 #define FACESW         4
  51     { "faceproc program", 0 },
  52 #define NFACESW        5
  53     { "nofaceproc", 0 },
  54 #define FOLDSW         6
  55     { "folder +folder", 0 },
  56 #define FORMSW         7
  57     { "form formfile", 0 },
  58 #define PROGSW         8
  59     { "moreproc program", 0 },
  60 #define NPROGSW        9
  61     { "nomoreproc", 0 },
  62 #define LENSW         10
  63     { "length lines", 0 },
  64 #define WIDTHSW       11
  65     { "width columns", 0 },
  66 #define SLEEPSW       12
  67     { "sleep seconds",  0 },
  68 #define BITSTUFFSW    13
  69     { "dashstuffing", -12 },    /* interface from forw */
  70 #define NBITSTUFFSW   14
  71     { "nodashstuffing", -14 },  /* interface from forw */
  72 #define VERSIONSW     15
  73     { "version", 0 },
  74 #define HELPSW        16
  75     { "help", 0 },
  76 #define FORW1SW       17
  77     { "forward", -7 },          /* interface from forw */
  78 #define FORW2SW       18
  79     { "forwall", -7 },          /* interface from forw */
  80 #define DGSTSW        19
  81     { "digest list", -6 },
  82 #define VOLUMSW       20
  83     { "volume number", -6 },
  84 #define ISSUESW       21
  85     { "issue number", -5 },
  86 #define NBODYSW       22
  87     { "nobody", -6 },
  88     { NULL, 0 }
  89 };
  90
  91 #define NOCOMPONENT 0x000001    /* don't show component name         */
  92 #define UPPERCASE   0x000002    /* display in all upper case         */
  93 #define CENTER      0x000004    /* center line                       */
  94 #define CLEARTEXT   0x000008    /* cleartext                         */
  95 #define EXTRA       0x000010    /* an "extra" component              */
  96 #define HDROUTPUT   0x000020    /* already output                    */
  97 #define CLEARSCR    0x000040    /* clear screen                      */
  98 #define LEFTADJUST  0x000080    /* left justify multiple lines       */
  99 #define COMPRESS    0x000100    /* compress text                     */
 100 #define ADDRFMT     0x000200    /* contains addresses                */
 101 #define BELL        0x000400    /* sound bell at EOP                 */
 102 #define DATEFMT     0x000800    /* contains dates                    */
 103 #define FORMAT      0x001000    /* parse address/date/RFC-2047 field */
 104 #define INIT        0x002000    /* initialize component              */
 105 #define FACEFMT     0x004000    /* contains face                     */
 106 #define FACEDFLT    0x008000    /* default for face                  */
 107 #define SPLIT       0x010000    /* split headers (don't concatenate) */
 108 #define NONEWLINE   0x020000    /* don't write trailing newline      */
 109 #define LBITS   "\020\01NOCOMPONENT\02UPPERCASE\03CENTER\04CLEARTEXT\05EXTRA\06HDROUTPUT\07CLEARSCR\010LEFTADJUST\011COMPRESS\012ADDRFMT\013BELL\014DATEFMT\015FORMAT\016INIT\017FACEFMT\020FACEDFLT\021SPLIT\022NONEWLINE"
 110 #define GFLAGS  (NOCOMPONENT | UPPERCASE | CENTER | LEFTADJUST | COMPRESS | SPLIT)
 111
 112 struct mcomp {
 113     char *c_name;               /* component name          */
 114     char *c_text;               /* component text          */
 115     char *c_ovtxt;              /* text overflow indicator */
 116     char *c_nfs;                /* iff FORMAT              */
 117     struct format *c_fmt;       /*   ..                    */
 118     char *c_face;               /* face designator         */
 119     int c_offset;               /* left margin indentation */
 120     int c_ovoff;                /* overflow indentation    */
 121     int c_width;                /* width of field          */
 122     int c_cwidth;               /* width of component      */
 123     int c_length;               /* length in lines         */
 124     long c_flags;
 125     struct mcomp *c_next;
 126 };
 127
 128 static struct mcomp *msghd = NULL;
 129 static struct mcomp *msgtl = NULL;
 130 static struct mcomp *fmthd = NULL;
 131 static struct mcomp *fmttl = NULL;
 132
 133 static struct mcomp global = {
 134     NULL, NULL, "", NULL, NULL, 0, -1, 80, -1, 40, BELL, 0
 135 };
 136
 137 static struct mcomp holder = {
 138     NULL, NULL, NULL, NULL, NULL, 0, 0, 0, 0, 0, NOCOMPONENT, 0
 139 };
 140
 141 struct pair {
 142     char *p_name;
 143     long p_flags;
 144 };
 145
 146 static struct pair pairs[] = {
 147     { "Date",            DATEFMT },
 148     { "From",            ADDRFMT|FACEDFLT },
 149     { "Sender",          ADDRFMT },
 150     { "Reply-To",        ADDRFMT },
 151     { "To",              ADDRFMT },
 152     { "cc",              ADDRFMT },
 153     { "Bcc",             ADDRFMT },
 154     { "Resent-Date",     DATEFMT },
 155     { "Resent-From",     ADDRFMT },
 156     { "Resent-Sender",   ADDRFMT },
 157     { "Resent-Reply-To", ADDRFMT },
 158     { "Resent-To",       ADDRFMT },
 159     { "Resent-cc",       ADDRFMT },
 160     { "Resent-Bcc",      ADDRFMT },
 161     { "Face",            FACEFMT },
 162     { NULL,              0 }
 163 };
 164
 165 struct triple {
 166     char *t_name;
 167     long t_on;
 168     long t_off;
 169 };
 170
 171 static struct triple triples[] = {
 172     { "nocomponent",   NOCOMPONENT, 0 },
 173     { "uppercase",     UPPERCASE,   0 },
 174     { "nouppercase",   0,           UPPERCASE },
 175     { "center",        CENTER,      0 },
 176     { "nocenter",      0,           CENTER },
 177     { "clearscreen",   CLEARSCR,    0 },
 178     { "noclearscreen", 0,           CLEARSCR },
 179     { "noclear",       0,           CLEARSCR },
 180     { "leftadjust",    LEFTADJUST,  0 },
 181     { "noleftadjust",  0,           LEFTADJUST },
 182     { "compress",      COMPRESS,    0 },
 183     { "nocompress",    0,           COMPRESS },
 184     { "split",         SPLIT,       0 },
 185     { "nosplit",       0,           SPLIT },
 186     { "addrfield",     ADDRFMT,     DATEFMT },
 187     { "bell",          BELL,        0 },
 188     { "nobell",        0,           BELL },
 189     { "datefield",     DATEFMT,     ADDRFMT },
 190     { "newline",       0,           NONEWLINE },
 191     { "nonewline",     NONEWLINE,   0 },
 192     { NULL,            0,           0 }
 193 };
 194
 195
 196 static int bellflg   = 0;
 197 static int clearflg  = 0;
 198 static int dashstuff = 0;
 199 static int dobody    = 1;
 200 static int forwflg   = 0;
 201 static int forwall   = 0;
 202
 203 static int sleepsw = NOTOK;
 204
 205 static char *digest = NULL;
 206 static int volume = 0;
 207 static int issue = 0;
 208
 209 static int exitstat = 0;
 210 static int mhldebug = 0;
 211
 212 #define PITTY   (-1)
 213 #define NOTTY   0
 214 #define ISTTY   1
 215 static int ontty = NOTTY;
 216
 217 static int row;
 218 static int column;
 219
 220 static int lm;
 221 static int llim;
 222 static int ovoff;
 223 static int term;
 224 static int wid;
 225
 226 static char *ovtxt;
 227
 228 static char *onelp;
 229
 230 static char *parptr;
 231
 232 static int num_ignores = 0;
 233 static char *ignores[MAXARGS];
 234
 235 static  jmp_buf env;
 236 static  jmp_buf mhlenv;
 237
 238 static char delim3[] =          /* from forw.c */
 239     "\n----------------------------------------------------------------------\n\n";
 240 static char delim4[] = "\n------------------------------\n\n";
 241
 242 static FILE *(*mhl_action) () = (FILE *(*) ()) 0;
 243
 244
 245 /*
 246  * Redefine a couple of functions.
 247  * These are undefined later in the code.
 248  */
 249 #define adios mhladios
 250 #define done  mhldone
 251
 252 /*
 253  * prototypes
 254  */
 255 static void mhl_format (char *, int, int);
 256 static int evalvar (struct mcomp *);
 257 static int ptoi (char *, int *);
 258 static int ptos (char *, char **);
 259 static char *parse (void);
 260 static void process (char *, char *, int, int);
 261 static void mhlfile (FILE *, char *, int, int);
 262 static int mcomp_flags (char *);
 263 static char *mcomp_add (long, char *, char *);
 264 static void mcomp_format (struct mcomp *, struct mcomp *);
 265 static struct mcomp *add_queue (struct mcomp **, struct mcomp **, char *, char *, int);
 266 static void free_queue (struct mcomp **, struct mcomp **);
 267 static void putcomp (struct mcomp *, struct mcomp *, int);
 268 static char *oneline (char *, long);
 269 static void putstr (char *);
 270 static void putch (char);
 271 static RETSIGTYPE intrser (int);
 272 static RETSIGTYPE pipeser (int);
 273 static RETSIGTYPE quitser (int);
 274 static void face_format (struct mcomp *);
 275 static int doface (struct mcomp *);
 276 static void mhladios (char *, char *, ...);
 277 static void mhldone (int);
 278 static void m_popen (char *);
 279
 280 int mhl (int, char **);
 281 int mhlsbr (int, char **, FILE *(*)());
 282 void m_pclose (void);
 283
 284 void clear_screen (void);             /* from termsbr.c */
 285 int SOprintf (char *, ...);           /* from termsbr.c */
 286 int sc_width (void);                  /* from termsbr.c */
 287 int sc_length (void);                 /* from termsbr.c */
 288 int sc_hardcopy (void);               /* from termsbr.c */
 289 struct hostent *gethostbystring ();
 290
 291
 292 int
 293 mhl (int argc, char **argv)
 294 {
 295     int length = 0, nomore = 0;
 296     int i, width = 0, vecp = 0;
 297     char *cp, *folder = NULL, *form = NULL;
 298     char buf[BUFSIZ], *files[MAXARGS];
 299     char **argp, **arguments;
 300
 301     invo_name = r1bindex (argv[0], '/');
 302
 303     /* read user profile/context */
 304     context_read();
 305
 306     arguments = getarguments (invo_name, argc, argv, 1);
 307     argp = arguments;
 308
 309     if ((cp = getenv ("MHLDEBUG")) && *cp)
 310         mhldebug++;
 311
 312     if ((cp = getenv ("FACEPROC")))
 313         faceproc = cp;
 314
 315     while ((cp = *argp++)) {
 316         if (*cp == '-') {
 317             switch (smatch (++cp, mhlswitches)) {
 318                 case AMBIGSW:
 319                     ambigsw (cp, mhlswitches);
 320                     done (1);
 321                 case UNKWNSW:
 322                     adios (NULL, "-%s unknown\n", cp);
 323
 324                 case HELPSW:
 325                     snprintf (buf, sizeof(buf), "%s [switches] [files ...]", invo_name);
 326                     print_help (buf, mhlswitches, 1);
 327                     done (1);
 328                 case VERSIONSW:
 329                     print_version(invo_name);
 330                     done (1);
 331
 332                 case BELLSW:
 333                     bellflg = 1;
 334                     continue;
 335                 case NBELLSW:
 336                     bellflg = -1;
 337                     continue;
 338
 339                 case CLRSW:
 340                     clearflg = 1;
 341                     continue;
 342                 case NCLRSW:
 343                     clearflg = -1;
 344                     continue;
 345
 346                 case FOLDSW:
 347                     if (!(folder = *argp++) || *folder == '-')
 348                         adios (NULL, "missing argument to %s", argp[-2]);
 349                     continue;
 350                 case FORMSW:
 351                     if (!(form = *argp++) || *form == '-')
 352                         adios (NULL, "missing argument to %s", argp[-2]);
 353                     continue;
 354
 355                 case FACESW:
 356                     if (!(faceproc = *argp++) || *faceproc == '-')
 357                         adios (NULL, "missing argument to %s", argp[-2]);
 358                     continue;
 359                 case NFACESW:
 360                     faceproc = NULL;
 361                     continue;
 362                 case SLEEPSW:
 363                     if (!(cp = *argp++) || *cp == '-')
 364                         adios (NULL, "missing argument to %s", argp[-2]);
 365                     sleepsw = atoi (cp);/* ZERO ok! */
 366                     continue;
 367
 368                 case PROGSW:
 369                     if (!(moreproc = *argp++) || *moreproc == '-')
 370                         adios (NULL, "missing argument to %s", argp[-2]);
 371                     continue;
 372                 case NPROGSW:
 373                     nomore++;
 374                     continue;
 375
 376                 case LENSW:
 377                     if (!(cp = *argp++) || *cp == '-')
 378                         adios (NULL, "missing argument to %s", argp[-2]);
 379                     if ((length = atoi (cp)) < 1)
 380                         adios (NULL, "bad argument %s %s", argp[-2], cp);
 381                     continue;
 382                 case WIDTHSW:
 383                     if (!(cp = *argp++) || *cp == '-')
 384                         adios (NULL, "missing argument to %s", argp[-2]);
 385                     if ((width = atoi (cp)) < 1)
 386                         adios (NULL, "bad argument %s %s", argp[-2], cp);
 387                     continue;
 388
 389                 case DGSTSW:
 390                     if (!(digest = *argp++) || *digest == '-')
 391                         adios (NULL, "missing argument to %s", argp[-2]);
 392                     continue;
 393                 case ISSUESW:
 394                     if (!(cp = *argp++) || *cp == '-')
 395                         adios (NULL, "missing argument to %s", argp[-2]);
 396                     if ((issue = atoi (cp)) < 1)
 397                         adios (NULL, "bad argument %s %s", argp[-2], cp);
 398                     continue;
 399                 case VOLUMSW:
 400                     if (!(cp = *argp++) || *cp == '-')
 401                         adios (NULL, "missing argument to %s", argp[-2]);
 402                     if ((volume = atoi (cp)) < 1)
 403                         adios (NULL, "bad argument %s %s", argp[-2], cp);
 404                     continue;
 405
 406                 case FORW2SW:
 407                     forwall++;  /* fall */
 408                 case FORW1SW:
 409                     forwflg++;
 410                     clearflg = -1;/* XXX */
 411                     continue;
 412
 413                 case BITSTUFFSW:
 414                     dashstuff = 1;      /* trinary logic */
 415                     continue;
 416                 case NBITSTUFFSW:
 417                     dashstuff = -1;     /* trinary logic */
 418                     continue;
 419
 420                 case NBODYSW:
 421                     dobody = 0;
 422                     continue;
 423             }
 424         }
 425         files[vecp++] = cp;
 426     }
 427
 428     if (!folder)
 429         folder = getenv ("mhfolder");
 430
 431     if (isatty (fileno (stdout))) {
 432         if (!nomore && !sc_hardcopy() && moreproc && *moreproc != '\0') {
 433             if (mhl_action) {
 434                 SIGNAL (SIGINT, SIG_IGN);
 435                 SIGNAL2 (SIGQUIT, quitser);
 436             }
 437             SIGNAL2 (SIGPIPE, pipeser);
 438             m_popen (moreproc);
 439             ontty = PITTY;
 440         } else {
 441             SIGNAL (SIGINT, SIG_IGN);
 442             SIGNAL2 (SIGQUIT, quitser);
 443             ontty = ISTTY;
 444         }
 445     } else {
 446         ontty = NOTTY;
 447     }
 448
 449     mhl_format (form ? form : mhlformat, length, width);
 450
 451     if (vecp == 0) {
 452         process (folder, NULL, 1, vecp = 1);
 453     } else {
 454         for (i = 0; i < vecp; i++)
 455             process (folder, files[i], i + 1, vecp);
 456     }
 457
 458     if (forwall) {
 459         if (digest) {
 460             printf ("%s", delim4);
 461             if (volume == 0) {
 462                 snprintf (buf, sizeof(buf), "End of %s Digest\n", digest);
 463             } else {
 464                 snprintf (buf, sizeof(buf), "End of %s Digest [Volume %d Issue %d]\n",
 465                         digest, volume, issue);
 466             }
 467             i = strlen (buf);
 468             for (cp = buf + i; i > 1; i--)
 469                 *cp++ = '*';
 470             *cp++ = '\n';
 471             *cp = 0;
 472             printf ("%s", buf);
 473         }
 474         else
 475             printf ("\n------- End of Forwarded Message%s\n\n",
 476                     vecp > 1 ? "s" : "");
 477     }
 478
 479     if (clearflg > 0 && ontty == NOTTY)
 480         clear_screen ();
 481
 482     if (ontty == PITTY)
 483         m_pclose ();
 484
 485     return exitstat;
 486 }
 487
 488
 489 static void
 490 mhl_format (char *file, int length, int width)
 491 {
 492     int i;
 493     char *bp, *cp, **ip;
 494     char *ap, buffer[BUFSIZ], name[NAMESZ];
 495     struct mcomp *c1;
 496     struct stat st;
 497     FILE *fp;
 498     static dev_t dev = 0;
 499     static ino_t ino = 0;
 500     static time_t mtime = 0;
 501
 502     if (fmthd != NULL) {
 503         if (stat (etcpath (file), &st) != NOTOK
 504                 && mtime == st.st_mtime
 505                 && dev == st.st_dev
 506                 && ino == st.st_ino)
 507             goto out;
 508         else
 509             free_queue (&fmthd, &fmttl);
 510     }
 511
 512     if ((fp = fopen (etcpath (file), "r")) == NULL)
 513         adios (file, "unable to open format file");
 514
 515     if (fstat (fileno (fp), &st) != NOTOK) {
 516         mtime = st.st_mtime;
 517         dev = st.st_dev;
 518         ino = st.st_ino;
 519     }
 520
 521     global.c_ovtxt = global.c_nfs = NULL;
 522     global.c_fmt = NULL;
 523     global.c_offset = 0;
 524     global.c_ovoff = -1;
 525     if ((i = sc_width ()) > 5)
 526         global.c_width = i;
 527     global.c_cwidth = -1;
 528     if ((i = sc_length ()) > 5)
 529         global.c_length = i - 1;
 530     global.c_flags = BELL;              /* BELL is default */
 531     *(ip = ignores) = NULL;
 532
 533     while (vfgets (fp, &ap) == OK) {
 534         bp = ap;
 535         if (*bp == ';')
 536             continue;
 537
 538         if ((cp = strchr(bp, '\n')))
 539             *cp = 0;
 540
 541         if (*bp == ':') {
 542             c1 = add_queue (&fmthd, &fmttl, NULL, bp + 1, CLEARTEXT);
 543             continue;
 544         }
 545
 546         parptr = bp;
 547         strncpy (name, parse(), sizeof(name));
 548         switch (*parptr) {
 549             case '\0':
 550             case ',':
 551             case '=':
 552                 /*
 553                  * Split this list of fields to ignore, and copy
 554                  * it to the end of the current "ignores" list.
 555                  */
 556                 if (!strcasecmp (name, "ignores")) {
 557                     char **tmparray, **p;
 558                     int n = 0;
 559
 560                     /* split the fields */
 561                     tmparray = brkstring (getcpy (++parptr), ",", NULL);
 562
 563                     /* count number of fields split */
 564                     p = tmparray;
 565                     while (*p++)
 566                         n++;
 567
 568                     /* copy pointers to split fields to ignores array */
 569                     ip = copyip (tmparray, ip, MAXARGS - num_ignores);
 570                     num_ignores += n;
 571                     continue;
 572                 }
 573                 parptr = bp;
 574                 while (*parptr) {
 575                     if (evalvar (&global))
 576                         adios (NULL, "format file syntax error: %s", bp);
 577                     if (*parptr)
 578                         parptr++;
 579                 }
 580                 continue;
 581
 582             case ':':
 583                 c1 = add_queue (&fmthd, &fmttl, name, NULL, INIT);
 584                 while (*parptr == ':' || *parptr == ',') {
 585                     parptr++;
 586                     if (evalvar (c1))
 587                         adios (NULL, "format file syntax error: %s", bp);
 588                 }
 589                 if (!c1->c_nfs && global.c_nfs) {
 590                     if (c1->c_flags & DATEFMT) {
 591                         if (global.c_flags & DATEFMT)
 592                             c1->c_nfs = getcpy (global.c_nfs);
 593                     }
 594                     else
 595                         if (c1->c_flags & ADDRFMT) {
 596                             if (global.c_flags & ADDRFMT)
 597                                 c1->c_nfs = getcpy (global.c_nfs);
 598                         }
 599                 }
 600                 continue;
 601
 602             default:
 603                 adios (NULL, "format file syntax error: %s", bp);
 604         }
 605     }
 606     fclose (fp);
 607
 608     if (mhldebug) {
 609         for (c1 = fmthd; c1; c1 = c1->c_next) {
 610             fprintf (stderr, "c1: name=\"%s\" text=\"%s\" ovtxt=\"%s\"\n",
 611                     c1->c_name, c1->c_text, c1->c_ovtxt);
 612             fprintf (stderr, "\tnfs=0x%x fmt=0x%x\n",
 613                     (unsigned int) c1->c_nfs, (unsigned int) c1->c_fmt);
 614             fprintf (stderr, "\toffset=%d ovoff=%d width=%d cwidth=%d length=%d\n",
 615                     c1->c_offset, c1->c_ovoff, c1->c_width,
 616                     c1->c_cwidth, c1->c_length);
 617             fprintf (stderr, "\tflags=%s\n",
 618                     snprintb (buffer, sizeof(buffer), (unsigned) c1->c_flags, LBITS));
 619         }
 620     }
 621
 622 out:
 623     if (clearflg == 1) {
 624         global.c_flags |= CLEARSCR;
 625     } else {
 626         if (clearflg == -1)
 627             global.c_flags &= ~CLEARSCR;
 628     }
 629
 630     switch (bellflg) {          /* command line may override format file */
 631         case 1:
 632             global.c_flags |= BELL;
 633             break;
 634         case -1:
 635             global.c_flags &= ~BELL;
 636             break;
 637     }
 638
 639     if (length)
 640         global.c_length = length;
 641     if (width)
 642         global.c_width = width;
 643     if (global.c_length < 5)
 644         global.c_length = 10000;
 645     if (global.c_width < 5)
 646         global.c_width = 10000;
 647 }
 648
 649
 650 static int
 651 evalvar (struct mcomp *c1)
 652 {
 653     char *cp, name[NAMESZ];
 654     struct triple *ap;
 655
 656     if (!*parptr)
 657         return 0;
 658     strncpy (name, parse(), sizeof(name));
 659
 660     if (!strcasecmp (name, "component")) {
 661         if (ptos (name, &c1->c_text))
 662             return 1;
 663         c1->c_flags &= ~NOCOMPONENT;
 664         return 0;
 665     }
 666
 667     if (!strcasecmp (name, "overflowtext"))
 668         return ptos (name, &c1->c_ovtxt);
 669
 670     if (!strcasecmp (name, "formatfield")) {
 671         char *nfs;
 672
 673         if (ptos (name, &cp))
 674             return 1;
 675         nfs = new_fs (NULL, NULL, cp);
 676         c1->c_nfs = getcpy (nfs);
 677         c1->c_flags |= FORMAT;
 678         return 0;
 679     }
 680
 681     if (!strcasecmp (name, "decode")) {
 682         char *nfs;
 683
 684         nfs = new_fs (NULL, NULL, "%(decode{text})");
 685         c1->c_nfs = getcpy (nfs);
 686         c1->c_flags |= FORMAT;
 687         return 0;
 688     }
 689
 690     if (!strcasecmp (name, "offset"))
 691         return ptoi (name, &c1->c_offset);
 692     if (!strcasecmp (name, "overflowoffset"))
 693         return ptoi (name, &c1->c_ovoff);
 694     if (!strcasecmp (name, "width"))
 695         return ptoi (name, &c1->c_width);
 696     if (!strcasecmp (name, "compwidth"))
 697         return ptoi (name, &c1->c_cwidth);
 698     if (!strcasecmp (name, "length"))
 699         return ptoi (name, &c1->c_length);
 700     if (!strcasecmp (name, "nodashstuffing"))
 701         return (dashstuff = -1);
 702
 703     for (ap = triples; ap->t_name; ap++)
 704         if (!strcasecmp (ap->t_name, name)) {
 705             c1->c_flags |= ap->t_on;
 706             c1->c_flags &= ~ap->t_off;
 707             return 0;
 708         }
 709
 710     return 1;
 711 }
 712
 713
 714 static int
 715 ptoi (char *name, int *i)
 716 {
 717     char *cp;
 718
 719     if (*parptr++ != '=' || !*(cp = parse ())) {
 720         advise (NULL, "missing argument to variable %s", name);
 721         return 1;
 722     }
 723
 724     *i = atoi (cp);
 725     return 0;
 726 }
 727
 728
 729 static int
 730 ptos (char *name, char **s)
 731 {
 732     char c, *cp;
 733
 734     if (*parptr++ != '=') {
 735         advise (NULL, "missing argument to variable %s", name);
 736         return 1;
 737     }
 738
 739     if (*parptr != '"') {
 740         for (cp = parptr;
 741                 *parptr && *parptr != ':' && *parptr != ',';
 742                 parptr++)
 743             continue;
 744     } else {
 745         for (cp = ++parptr; *parptr && *parptr != '"'; parptr++)
 746             if (*parptr == QUOTE)
 747                 if (!*++parptr)
 748                     parptr--;
 749     }
 750     c = *parptr;
 751     *parptr = 0;
 752     *s = getcpy (cp);
 753     if ((*parptr = c) == '"')
 754         parptr++;
 755     return 0;
 756 }
 757
 758
 759 static char *
 760 parse (void)
 761 {
 762     int c;
 763     char *cp;
 764     static char result[NAMESZ];
 765
 766     for (cp = result; *parptr && (cp - result < NAMESZ); parptr++) {
 767         c = *parptr;
 768         if (isalnum (c)
 769                 || c == '.'
 770                 || c == '-'
 771                 || c == '_'
 772                 || c =='['
 773                 || c == ']')
 774             *cp++ = c;
 775         else
 776             break;
 777     }
 778     *cp = '\0';
 779
 780     return result;
 781 }
 782
 783
 784 static void
 785 process (char *folder, char *fname, int ofilen, int ofilec)
 786 {
 787     char *cp;
 788     FILE *fp;
 789     struct mcomp *c1;
 790
 791     switch (setjmp (env)) {
 792         case OK:
 793             if (fname) {
 794                 fp = mhl_action ? (*mhl_action) (fname) : fopen (fname, "r");
 795                 if (fp == NULL) {
 796                     advise (fname, "unable to open");
 797                     exitstat++;
 798                     return;
 799                 }
 800             } else {
 801                 fname = "(stdin)";
 802                 fp = stdin;
 803             }
 804             cp = folder ? concat (folder, ":", fname, NULL) : getcpy (fname);
 805             if (ontty != PITTY)
 806                 SIGNAL (SIGINT, intrser);
 807             mhlfile (fp, cp, ofilen, ofilec);  /* FALL THROUGH! */
 808
 809         default:
 810             if (ontty != PITTY)
 811                 SIGNAL (SIGINT, SIG_IGN);
 812             if (mhl_action == NULL && fp != stdin)
 813                 fclose (fp);
 814             free (cp);
 815             if (holder.c_text) {
 816                 free (holder.c_text);
 817                 holder.c_text = NULL;
 818             }
 819             free_queue (&msghd, &msgtl);
 820             for (c1 = fmthd; c1; c1 = c1->c_next)
 821                 c1->c_flags &= ~HDROUTPUT;
 822             break;
 823     }
 824 }
 825
 826
 827 static void
 828 mhlfile (FILE *fp, char *mname, int ofilen, int ofilec)
 829 {
 830     int state;
 831     struct mcomp *c1, *c2, *c3;
 832     char **ip, name[NAMESZ], buf[BUFSIZ];
 833
 834     if (forwall) {
 835         if (digest)
 836             printf ("%s", ofilen == 1 ? delim3 : delim4);
 837         else {
 838             printf ("\n-------");
 839             if (ofilen == 1)
 840                 printf (" Forwarded Message%s", ofilec > 1 ? "s" : "");
 841             else
 842                 printf (" Message %d", ofilen);
 843             printf ("\n\n");
 844         }
 845     } else {
 846         switch (ontty) {
 847             case PITTY:
 848                 if (ofilec > 1) {
 849                     if (ofilen > 1) {
 850                         if ((global.c_flags & CLEARSCR))
 851                             clear_screen ();
 852                         else
 853                             printf ("\n\n\n");
 854                     }
 855                     printf (">>> %s\n\n", mname);
 856                 }
 857                 break;
 858
 859             case ISTTY:
 860                 strncpy (buf, "\n", sizeof(buf));
 861                 if (ofilec > 1) {
 862                     if (SOprintf ("Press <return> to list \"%s\"...", mname)) {
 863                         if (ofilen > 1)
 864                             printf ("\n\n\n");
 865                         printf ("Press <return> to list \"%s\"...", mname);
 866                     }
 867                     fflush (stdout);
 868                     buf[0] = 0;
 869                     read (fileno (stdout), buf, sizeof(buf));
 870                 }
 871                 if (strchr(buf, '\n')) {
 872                     if ((global.c_flags & CLEARSCR))
 873                         clear_screen ();
 874                 }
 875                 else
 876                     printf ("\n");
 877                 break;
 878
 879             default:
 880                 if (ofilec > 1) {
 881                     if (ofilen > 1) {
 882                         printf ("\n\n\n");
 883                         if (clearflg > 0)
 884                             clear_screen ();
 885                     }
 886                     printf (">>> %s\n\n", mname);
 887                 }
 888                 break;
 889         }
 890     }
 891
 892     for (state = FLD;;) {
 893         switch (state = m_getfld (state, name, buf, sizeof(buf), fp)) {
 894             case FLD:
 895             case FLDPLUS:
 896                 for (ip = ignores; *ip; ip++)
 897                     if (!strcasecmp (name, *ip)) {
 898                         while (state == FLDPLUS)
 899                             state = m_getfld (state, name, buf, sizeof(buf), fp);
 900                         break;
 901                     }
 902                 if (*ip)
 903                     continue;
 904
 905                 for (c2 = fmthd; c2; c2 = c2->c_next)
 906                     if (!strcasecmp (c2->c_name, name))
 907                         break;
 908                 c1 = NULL;
 909                 if (!((c3 = c2 ? c2 : &global)->c_flags & SPLIT))
 910                     for (c1 = msghd; c1; c1 = c1->c_next)
 911                         if (!strcasecmp (c1->c_name, c3->c_name)) {
 912                             c1->c_text =
 913                                 mcomp_add (c1->c_flags, buf, c1->c_text);
 914                             break;
 915                         }
 916                 if (c1 == NULL)
 917                     c1 = add_queue (&msghd, &msgtl, name, buf, 0);
 918                 while (state == FLDPLUS) {
 919                     state = m_getfld (state, name, buf, sizeof(buf), fp);
 920                     c1->c_text = add (buf, c1->c_text);
 921                 }
 922                 if (c2 == NULL)
 923                     c1->c_flags |= EXTRA;
 924                 continue;
 925
 926             case BODY:
 927             case FILEEOF:
 928                 row = column = 0;
 929                 for (c1 = fmthd; c1; c1 = c1->c_next) {
 930                     if (c1->c_flags & CLEARTEXT) {
 931                         putcomp (c1, c1, ONECOMP);
 932                         continue;
 933                     }
 934                     if (!strcasecmp (c1->c_name, "messagename")) {
 935                         holder.c_text = concat ("(Message ", mname, ")\n",
 936                                             NULL);
 937                         putcomp (c1, &holder, ONECOMP);
 938                         free (holder.c_text);
 939                         holder.c_text = NULL;
 940                         continue;
 941                     }
 942                     if (!strcasecmp (c1->c_name, "extras")) {
 943                         for (c2 = msghd; c2; c2 = c2->c_next)
 944                             if (c2->c_flags & EXTRA)
 945                                 putcomp (c1, c2, TWOCOMP);
 946                         continue;
 947                     }
 948                     if (dobody && !strcasecmp (c1->c_name, "body")) {
 949                         if ((holder.c_text = malloc (sizeof(buf))) == NULL)
 950                             adios (NULL, "unable to allocate buffer memory");
 951                         strncpy (holder.c_text, buf, sizeof(buf));
 952                         while (state == BODY) {
 953                             putcomp (c1, &holder, BODYCOMP);
 954                             state = m_getfld (state, name, holder.c_text,
 955                                         sizeof(buf), fp);
 956                         }
 957                         free (holder.c_text);
 958                         holder.c_text = NULL;
 959                         continue;
 960                     }
 961                     for (c2 = msghd; c2; c2 = c2->c_next)
 962                         if (!strcasecmp (c2->c_name, c1->c_name)) {
 963                             putcomp (c1, c2, ONECOMP);
 964                             if (!(c1->c_flags & SPLIT))
 965                                 break;
 966                         }
 967                     if (faceproc && c2 == NULL && (c1->c_flags & FACEFMT))
 968                         for (c2 = msghd; c2; c2 = c2->c_next)
 969                             if (c2->c_flags & FACEDFLT) {
 970                                 if (c2->c_face == NULL)
 971                                     face_format (c2);
 972                                 if ((holder.c_text = c2->c_face)) {
 973                                     putcomp (c1, &holder, ONECOMP);
 974                                     holder.c_text = NULL;
 975                                 }
 976                                 break;
 977                             }
 978                 }
 979                 return;
 980
 981             case LENERR:
 982             case FMTERR:
 983                 advise (NULL, "format error in message %s", mname);
 984                 exitstat++;
 985                 return;
 986
 987             default:
 988                 adios (NULL, "getfld() returned %d", state);
 989         }
 990     }
 991 }
 992
 993
 994 static int
 995 mcomp_flags (char *name)
 996 {
 997     struct pair *ap;
 998
 999     for (ap = pairs; ap->p_name; ap++)
1000         if (!strcasecmp (ap->p_name, name))
1001             return (ap->p_flags);
1002
1003     return 0;
1004 }
1005
1006
1007 static char *
1008 mcomp_add (long flags, char *s1, char *s2)
1009 {
1010     char *dp;
1011
1012     if (!(flags & ADDRFMT))
1013         return add (s1, s2);
1014
1015     if (s2 && *(dp = s2 + strlen (s2) - 1) == '\n')
1016         *dp = 0;
1017
1018     return add (s1, add (",\n", s2));
1019 }
1020
1021
1022 struct pqpair {
1023     char *pq_text;
1024     char *pq_error;
1025     struct pqpair *pq_next;
1026 };
1027
1028
1029 static void
1030 mcomp_format (struct mcomp *c1, struct mcomp *c2)
1031 {
1032     int dat[5];
1033     char *ap, *cp;
1034     char buffer[BUFSIZ], error[BUFSIZ];
1035     struct comp *cptr;
1036     struct pqpair *p, *q;
1037     struct pqpair pq;
1038     struct mailname *mp;
1039
1040     ap = c2->c_text;
1041     c2->c_text = NULL;
1042     dat[0] = 0;
1043     dat[1] = 0;
1044     dat[2] = 0;
1045     dat[3] = sizeof(buffer) - 1;
1046     dat[4] = 0;
1047     fmt_compile (c1->c_nfs, &c1->c_fmt);
1048
1049     if (!(c1->c_flags & ADDRFMT)) {
1050         FINDCOMP (cptr, "text");
1051         if (cptr)
1052             cptr->c_text = ap;
1053         if ((cp = strrchr(ap, '\n')))   /* drop ending newline */
1054             if (!cp[1])
1055                 *cp = 0;
1056
1057         fmt_scan (c1->c_fmt, buffer, sizeof(buffer) - 1, dat);
1058         /* Don't need to append a newline, dctime() already did */
1059         c2->c_text = getcpy (buffer);
1060
1061         free (ap);
1062         return;
1063     }
1064
1065     (q = &pq)->pq_next = NULL;
1066     while ((cp = getname (ap))) {
1067         if ((p = (struct pqpair *) calloc ((size_t) 1, sizeof(*p))) == NULL)
1068             adios (NULL, "unable to allocate pqpair memory");
1069
1070         if ((mp = getm (cp, NULL, 0, AD_NAME, error)) == NULL) {
1071             p->pq_text = getcpy (cp);
1072             p->pq_error = getcpy (error);
1073         } else {
1074             if ((c1->c_flags & FACEDFLT) && c2->c_face == NULL) {
1075                 char   *h, *o;
1076                 if ((h = mp->m_host) == NULL)
1077                     h = LocalName ();
1078                 if ((o = OfficialName (h)))
1079                     h = o;
1080                 c2->c_face = concat ("address ", h, " ", mp->m_mbox,
1081                                     NULL);
1082             }
1083             p->pq_text = getcpy (mp->m_text);
1084             mnfree (mp);
1085         }
1086         q = (q->pq_next = p);
1087     }
1088
1089     for (p = pq.pq_next; p; p = q) {
1090         FINDCOMP (cptr, "text");
1091         if (cptr)
1092             cptr->c_text = p->pq_text;
1093         FINDCOMP (cptr, "error");
1094         if (cptr)
1095             cptr->c_text = p->pq_error;
1096
1097         fmt_scan (c1->c_fmt, buffer, sizeof(buffer) - 1, dat);
1098         if (*buffer) {
1099             if (c2->c_text)
1100                 c2->c_text = add (",\n", c2->c_text);
1101             if (*(cp = buffer + strlen (buffer) - 1) == '\n')
1102                 *cp = 0;
1103             c2->c_text = add (buffer, c2->c_text);
1104         }
1105
1106         free (p->pq_text);
1107         if (p->pq_error)
1108             free (p->pq_error);
1109         q = p->pq_next;
1110         free ((char *) p);
1111     }
1112
1113     c2->c_text = add ("\n", c2->c_text);
1114     free (ap);
1115 }
1116
1117
1118 static struct mcomp *
1119 add_queue (struct mcomp **head, struct mcomp **tail, char *name, char *text, int flags)
1120 {
1121     struct mcomp *c1;
1122
1123     if ((c1 = (struct mcomp *) calloc ((size_t) 1, sizeof(*c1))) == NULL)
1124         adios (NULL, "unable to allocate comp memory");
1125
1126     c1->c_flags = flags & ~INIT;
1127     if ((c1->c_name = name ? getcpy (name) : NULL))
1128         c1->c_flags |= mcomp_flags (c1->c_name);
1129     c1->c_text = text ? getcpy (text) : NULL;
1130     if (flags & INIT) {
1131         if (global.c_ovtxt)
1132             c1->c_ovtxt = getcpy (global.c_ovtxt);
1133         c1->c_offset = global.c_offset;
1134         c1->c_ovoff = global. c_ovoff;
1135         c1->c_width = c1->c_length = 0;
1136         c1->c_cwidth = global.c_cwidth;
1137         c1->c_flags |= global.c_flags & GFLAGS;
1138     }
1139     if (*head == NULL)
1140         *head = c1;
1141     if (*tail != NULL)
1142         (*tail)->c_next = c1;
1143     *tail = c1;
1144
1145     return c1;
1146 }
1147
1148
1149 static void
1150 free_queue (struct mcomp **head, struct mcomp **tail)
1151 {
1152     struct mcomp *c1, *c2;
1153
1154     for (c1 = *head; c1; c1 = c2) {
1155         c2 = c1->c_next;
1156         if (c1->c_name)
1157             free (c1->c_name);
1158         if (c1->c_text)
1159             free (c1->c_text);
1160         if (c1->c_ovtxt)
1161             free (c1->c_ovtxt);
1162         if (c1->c_nfs)
1163             free (c1->c_nfs);
1164         if (c1->c_fmt)
1165             free ((char *) c1->c_fmt);
1166         if (c1->c_face)
1167             free (c1->c_face);
1168         free ((char *) c1);
1169     }
1170
1171     *head = *tail = NULL;
1172 }
1173
1174
1175 static void
1176 putcomp (struct mcomp *c1, struct mcomp *c2, int flag)
1177 {
1178     int count, cchdr;
1179     char *cp;
1180
1181     cchdr = 0;
1182     lm = 0;
1183     llim = c1->c_length ? c1->c_length : -1;
1184     wid = c1->c_width ? c1->c_width : global.c_width;
1185     ovoff = (c1->c_ovoff >= 0 ? c1->c_ovoff : global.c_ovoff)
1186         + c1->c_offset;
1187     if ((ovtxt = c1->c_ovtxt ? c1->c_ovtxt : global.c_ovtxt) == NULL)
1188         ovtxt = "";
1189     if (wid < ovoff + strlen (ovtxt) + 5)
1190         adios (NULL, "component: %s width(%d) too small for overflow(%d)",
1191                 c1->c_name, wid, ovoff + strlen (ovtxt) + 5);
1192     onelp = NULL;
1193
1194     if (c1->c_flags & CLEARTEXT) {
1195         putstr (c1->c_text);
1196         putstr ("\n");
1197         return;
1198     }
1199
1200     if (c1->c_flags & FACEFMT)
1201         switch (doface (c2)) {
1202             case NOTOK:         /* error */
1203             case OK:            /* async faceproc */
1204                 return;
1205
1206             default:            /* sync faceproc */
1207                 break;
1208         }
1209
1210     if (c1->c_nfs && (c1->c_flags & (ADDRFMT | DATEFMT | FORMAT)))
1211         mcomp_format (c1, c2);
1212
1213     if (c1->c_flags & CENTER) {
1214         count = (c1->c_width ? c1->c_width : global.c_width)
1215             - c1->c_offset - strlen (c2->c_text);
1216         if (!(c1->c_flags & HDROUTPUT) && !(c1->c_flags & NOCOMPONENT))
1217             count -= strlen (c1->c_text ? c1->c_text : c1->c_name) + 2;
1218         lm = c1->c_offset + (count / 2);
1219     } else {
1220         if (c1->c_offset)
1221             lm = c1->c_offset;
1222     }
1223
1224     if (!(c1->c_flags & HDROUTPUT) && !(c1->c_flags & NOCOMPONENT)) {
1225         if (c1->c_flags & UPPERCASE)            /* uppercase component also */
1226             for (cp = (c1->c_text ? c1->c_text : c1->c_name); *cp; cp++)
1227                 if (islower (*cp))
1228                     *cp = toupper (*cp);
1229         putstr (c1->c_text ? c1->c_text : c1->c_name);
1230         if (flag != BODYCOMP) {
1231             putstr (": ");
1232             if (!(c1->c_flags & SPLIT))
1233                 c1->c_flags |= HDROUTPUT;
1234
1235         cchdr++;
1236         if ((count = c1->c_cwidth -
1237                 strlen (c1->c_text ? c1->c_text : c1->c_name) - 2) > 0)
1238             while (count--)
1239                 putstr (" ");
1240         }
1241         else
1242             c1->c_flags |= HDROUTPUT;           /* for BODYCOMP */
1243     }
1244
1245     if (flag == TWOCOMP
1246             && !(c2->c_flags & HDROUTPUT)
1247             && !(c2->c_flags & NOCOMPONENT)) {
1248         if (c1->c_flags & UPPERCASE)
1249             for (cp = c2->c_name; *cp; cp++)
1250                 if (islower (*cp))
1251                     *cp = toupper (*cp);
1252         putstr (c2->c_name);
1253         putstr (": ");
1254         if (!(c1->c_flags & SPLIT))
1255             c2->c_flags |= HDROUTPUT;
1256
1257         cchdr++;
1258         if ((count = c1->c_cwidth - strlen (c2->c_name) - 2) > 0)
1259             while (count--)
1260                 putstr (" ");
1261     }
1262     if (c1->c_flags & UPPERCASE)
1263         for (cp = c2->c_text; *cp; cp++)
1264             if (islower (*cp))
1265                 *cp = toupper (*cp);
1266
1267     count = 0;
1268     if (cchdr) {
1269         if (flag == TWOCOMP)
1270             count = (c1->c_cwidth >= 0) ? c1->c_cwidth
1271                         : strlen (c2->c_name) + 2;
1272         else
1273             count = (c1->c_cwidth >= 0) ? c1->c_cwidth
1274                         : strlen (c1->c_text ? c1->c_text : c1->c_name) + 2;
1275     }
1276     count += c1->c_offset;
1277
1278     if ((cp = oneline (c2->c_text, c1->c_flags)))
1279        putstr(cp);
1280     if (term == '\n')
1281         putstr ("\n");
1282     while ((cp = oneline (c2->c_text, c1->c_flags))) {
1283         lm = count;
1284         if (flag == BODYCOMP
1285                 && !(c1->c_flags & NOCOMPONENT))
1286             putstr (c1->c_text ? c1->c_text : c1->c_name);
1287         if (*cp)
1288             putstr (cp);
1289         if (term == '\n')
1290             putstr ("\n");
1291     }
1292 }
1293
1294
1295 static char *
1296 oneline (char *stuff, long flags)
1297 {
1298     int spc;
1299     char *cp, *ret;
1300
1301     if (onelp == NULL)
1302         onelp = stuff;
1303     if (*onelp == 0)
1304         return (onelp = NULL);
1305
1306     ret = onelp;
1307     term = 0;
1308     if (flags & COMPRESS) {
1309         for (spc = 1, cp = ret; *onelp; onelp++)
1310             if (isspace (*onelp)) {
1311                 if (*onelp == '\n' && (!onelp[1] || (flags & ADDRFMT))) {
1312                     term = '\n';
1313                     *onelp++ = 0;
1314                     break;
1315                 }
1316                 else
1317                     if (!spc) {
1318                         *cp++ = ' ';
1319                         spc++;
1320                     }
1321             }
1322             else {
1323                 *cp++ = *onelp;
1324                 spc = 0;
1325             }
1326
1327         *cp = 0;
1328     }
1329     else {
1330         while (*onelp && *onelp != '\n')
1331             onelp++;
1332         if (*onelp == '\n') {
1333             term = '\n';
1334             *onelp++ = 0;
1335         }
1336         if (flags & LEFTADJUST)
1337             while (*ret == ' ' || *ret == '\t')
1338                 ret++;
1339     }
1340     if (*onelp == 0 && term == '\n' && (flags & NONEWLINE))
1341         term = 0;
1342
1343     return ret;
1344 }
1345
1346
1347 static void
1348 putstr (char *string)
1349 {
1350     if (!column && lm > 0) {
1351         while (lm > 0)
1352             if (lm >= 8) {
1353                 putch ('\t');
1354                 lm -= 8;
1355             }
1356             else {
1357                 putch (' ');
1358                 lm--;
1359             }
1360     }
1361     lm = 0;
1362     while (*string)
1363         putch (*string++);
1364 }
1365
1366
1367 static void
1368 putch (char ch)
1369 {
1370     char buf[BUFSIZ];
1371
1372     if (llim == 0)
1373         return;
1374
1375     switch (ch) {
1376         case '\n':
1377             if (llim > 0)
1378                 llim--;
1379             column = 0;
1380             row++;
1381             if (ontty != ISTTY || row != global.c_length)
1382                 break;
1383             if (global.c_flags & BELL)
1384                 putchar ('\007');
1385             fflush (stdout);
1386             buf[0] = 0;
1387             read (fileno (stdout), buf, sizeof(buf));
1388             if (strchr(buf, '\n')) {
1389                 if (global.c_flags & CLEARSCR)
1390                     clear_screen ();
1391                 row = 0;
1392             } else {
1393                 putchar ('\n');
1394                 row = global.c_length / 3;
1395             }
1396             return;
1397
1398         case '\t':
1399             column |= 07;
1400             column++;
1401             break;
1402
1403         case '\b':
1404             column--;
1405             break;
1406
1407         case '\r':
1408             column = 0;
1409             break;
1410
1411         default:
1412             /*
1413              * If we are forwarding this message, and the first
1414              * column contains a dash, then add a dash and a space.
1415              */
1416             if (column == 0 && forwflg && (dashstuff >= 0) && ch == '-') {
1417                 putchar ('-');
1418                 putchar (' ');
1419             }
1420             if (ch >= ' ')
1421                 column++;
1422             break;
1423     }
1424
1425     if (column >= wid) {
1426         putch ('\n');
1427         if (ovoff > 0)
1428             lm = ovoff;
1429         putstr (ovtxt ? ovtxt : "");
1430         putch (ch);
1431         return;
1432     }
1433
1434     putchar (ch);
1435 }
1436
1437
1438 static RETSIGTYPE
1439 intrser (int i)
1440 {
1441 #ifndef RELIABLE_SIGNALS
1442     SIGNAL (SIGINT, intrser);
1443 #endif
1444
1445     discard (stdout);
1446     putchar ('\n');
1447     longjmp (env, DONE);
1448 }
1449
1450
1451 static RETSIGTYPE
1452 pipeser (int i)
1453 {
1454 #ifndef RELIABLE_SIGNALS
1455     SIGNAL (SIGPIPE, pipeser);
1456 #endif
1457
1458     done (NOTOK);
1459 }
1460
1461
1462 static RETSIGTYPE
1463 quitser (int i)
1464 {
1465 #ifndef RELIABLE_SIGNALS
1466     SIGNAL (SIGQUIT, quitser);
1467 #endif
1468
1469     putchar ('\n');
1470     fflush (stdout);
1471     done (NOTOK);
1472 }
1473
1474
1475 static void
1476 face_format (struct mcomp *c1)
1477 {
1478     char *cp;
1479     struct mailname *mp;
1480
1481     if ((cp = c1->c_text) == NULL)
1482         return;
1483
1484     if ((cp = getname (cp))) {
1485         if ((mp = getm (cp, NULL, 0, AD_NAME, NULL))) {
1486             char *h, *o;
1487             if ((h = mp->m_host) == NULL)
1488                 h = LocalName ();
1489             if ((o = OfficialName (h)))
1490                 h = o;
1491             c1->c_face = concat ("address ", h, " ", mp->m_mbox, NULL);
1492         }
1493
1494         while ((cp = getname (cp)))
1495             continue;
1496     }
1497 }
1498
1499
1500 /*
1501  * faceproc is two elements defining the image agent's location:
1502  *     Internet host
1503  *     UDP port
1504  */
1505
1506 #include <sys/socket.h>
1507 #include <netinet/in.h>
1508 #include <netdb.h>
1509
1510 #ifdef HAVE_ARPA_INET_H
1511 # include <arpa/inet.h>
1512 #endif
1513
1514 static int
1515 doface (struct mcomp *c1)
1516 {
1517     int result, sd;
1518     struct sockaddr_in in_socket;
1519     struct sockaddr_in *isock = &in_socket;
1520     static int inited = OK;
1521     static int addrlen;
1522     static struct in_addr addr;
1523     static unsigned short portno;
1524
1525     if (inited == OK) {
1526         char *cp;
1527         char **ap = brkstring (cp = getcpy (faceproc), " ", "\n");
1528         struct hostent *hp;
1529
1530         if (ap[0] == NULL || ap[1] == NULL) {
1531 bad_faceproc: ;
1532             free (cp);
1533             return (inited = NOTOK);
1534         }
1535
1536         if (!(hp = gethostbystring (ap[0])))
1537             goto bad_faceproc;
1538         memcpy((char *) &addr, hp->h_addr, addrlen = hp->h_length);
1539
1540         portno = htons ((unsigned short) atoi (ap[1]));
1541         free (cp);
1542
1543         inited = DONE;
1544     }
1545     if (inited == NOTOK)
1546         return NOTOK;
1547
1548     isock->sin_family = AF_INET;
1549     isock->sin_port = portno;
1550     memcpy((char *) &isock->sin_addr, (char *) &addr, addrlen);
1551
1552     if ((sd = socket (AF_INET, SOCK_DGRAM, 0)) == NOTOK)
1553         return NOTOK;
1554
1555     result = sendto (sd, c1->c_text, strlen (c1->c_text), 0,
1556                 (struct sockaddr *) isock, sizeof(*isock));
1557
1558     close (sd);
1559
1560     return (result != NOTOK ? OK : NOTOK);
1561 }
1562
1563 /*
1564  * COMMENTED OUT
1565  * This version doesn't use sockets
1566  */
1567 #if 0
1568
1569 static int
1570 doface (struct mcomp *c1)
1571 {
1572     int i, len, vecp;
1573     pid_t child_id;
1574     int result, pdi[2], pdo[2];
1575     char *bp, *cp;
1576     char buffer[BUFSIZ], *vec[10];
1577
1578     if (pipe (pdi) == NOTOK)
1579         return NOTOK;
1580     if (pipe (pdo) == NOTOK) {
1581         close (pdi[0]);
1582         close (pdi[1]);
1583         return NOTOK;
1584     }
1585
1586     for (i = 0; (child_id = vfork()) == NOTOK && i < 5; i++)
1587         sleep (5);
1588
1589     switch (child_id) {
1590         case NOTOK:
1591             /* oops... fork error */
1592             return NOTOK;
1593
1594         case OK:
1595             /* child process */
1596             SIGNAL (SIGINT, SIG_IGN);
1597             SIGNAL (SIGQUIT, SIG_IGN);
1598             if (pdi[0] != fileno (stdin)) {
1599                 dup2 (pdi[0], fileno (stdin));
1600                 close (pdi[0]);
1601             }
1602             close (pdi[1]);
1603             close (pdo[0]);
1604             if (pdo[1] != fileno (stdout)) {
1605                 dup2 (pdo[1], fileno (stdout));
1606                 close (pdo[1]);
1607             }
1608             vecp = 0;
1609             vec[vecp++] = r1bindex (faceproc, '/');
1610             vec[vecp++] = "-e";
1611             if (sleepsw != NOTOK) {
1612                 vec[vecp++] = "-s";
1613                 snprintf (buffer, sizeof(buffer), "%d", sleepsw);
1614                 vec[vecp++] = buffer;
1615             }
1616             vec[vecp] = NULL;
1617             execvp (faceproc, vec);
1618             fprintf (stderr, "unable to exec ");
1619             perror (faceproc);
1620             _exit (-1);         /* NOTREACHED */
1621
1622         default:
1623             /* parent process */
1624             close (pdi[0]);
1625             i = strlen (c1->c_text);
1626             if (write (pdi[1], c1->c_text, i) != i)
1627                 adios ("pipe", "error writing to");
1628             free (c1->c_text), c1->c_text = NULL;
1629             close (pdi[1]);
1630
1631             close (pdo[1]);
1632             cp = NULL, len = 0;
1633             result = DONE;
1634             while ((i = read (pdo[0], buffer, strlen (buffer))) > 0) {
1635                 if (cp) {
1636                     int j;
1637                     char *dp;
1638                     if ((dp = realloc (cp, (unsigned) (j = len + i))) == NULL)
1639                         adios (NULL, "unable to allocate face storage");
1640                     memcpy(dp + len, buffer, i);
1641                     cp = dp, len = j;
1642                 }
1643                 else {
1644                     if ((cp = malloc ((unsigned) i)) == NULL)
1645                         adios (NULL, "unable to allocate face storage");
1646                     memcpy(cp, buffer, i);
1647                     len = i;
1648                 }
1649                 if (result == DONE)
1650                     for (bp = buffer + i - 1; bp >= buffer; bp--)
1651                         if (!isascii (*bp) || iscntrl (*bp)) {
1652                             result = OK;
1653                             break;
1654                         }
1655             }
1656             close (pdo[0]);
1657
1658 /* no waiting for child... */
1659
1660             if (result == OK) { /* binary */
1661                 if (write (1, cp, len) != len)
1662                     adios ("writing", "error");
1663                 free (cp);
1664             }
1665             else                /* empty */
1666                 if ((c1->c_text = cp) == NULL)
1667                     result = OK;
1668             break;
1669     }
1670
1671     return result;
1672 }
1673 #endif /* COMMENTED OUT */
1674
1675
1676 int
1677 mhlsbr (int argc, char **argv, FILE *(*action)())
1678 {
1679     SIGNAL_HANDLER istat, pstat, qstat;
1680     char *cp;
1681     struct mcomp *c1;
1682
1683     switch (setjmp (mhlenv)) {
1684         case OK:
1685             cp = invo_name;
1686             sleepsw = 0;        /* XXX */
1687             bellflg = clearflg = forwflg = forwall = exitstat = 0;
1688             digest = NULL;
1689             ontty = NOTTY;
1690             mhl_action = action;
1691
1692             /*
1693              * If signal is at default action, then start ignoring
1694              * it, else let it set to its current action.
1695              */
1696             if ((istat = SIGNAL (SIGINT, SIG_IGN)) != SIG_DFL)
1697                 SIGNAL (SIGINT, istat);
1698             if ((qstat = SIGNAL (SIGQUIT, SIG_IGN)) != SIG_DFL)
1699                 SIGNAL (SIGQUIT, qstat);
1700             pstat = SIGNAL (SIGPIPE, pipeser);
1701             mhl (argc, argv);                  /* FALL THROUGH! */
1702
1703         default:
1704             SIGNAL (SIGINT, istat);
1705             SIGNAL (SIGQUIT, qstat);
1706             SIGNAL (SIGPIPE, SIG_IGN);/* should probably change to block instead */
1707             if (ontty == PITTY)
1708                 m_pclose ();
1709             SIGNAL (SIGPIPE, pstat);
1710             invo_name = cp;
1711             if (holder.c_text) {
1712                 free (holder.c_text);
1713                 holder.c_text = NULL;
1714             }
1715             free_queue (&msghd, &msgtl);
1716             for (c1 = fmthd; c1; c1 = c1->c_next)
1717                 c1->c_flags &= ~HDROUTPUT;
1718             return exitstat;
1719     }
1720 }
1721
1722 #undef adios
1723 #undef done
1724
1725 static void
1726 mhladios (char *what, char *fmt, ...)
1727 {
1728     va_list ap;
1729
1730     va_start(ap, fmt);
1731     advertise (what, NULL, fmt, ap);
1732     va_end(ap);
1733     mhldone (1);
1734 }
1735
1736
1737 static void
1738 mhldone (int status)
1739 {
1740     exitstat = status;
1741     if (mhl_action)
1742         longjmp (mhlenv, DONE);
1743     else
1744         done (exitstat);
1745 }
1746
1747
1748 static  int m_pid = NOTOK;
1749 static  int sd = NOTOK;
1750
1751 static void
1752 m_popen (char *name)
1753 {
1754     int pd[2];
1755
1756     if (mhl_action && (sd = dup (fileno (stdout))) == NOTOK)
1757         adios ("standard output", "unable to dup()");
1758
1759     if (pipe (pd) == NOTOK)
1760         adios ("pipe", "unable to");
1761
1762     switch (m_pid = vfork ()) {
1763         case NOTOK:
1764             adios ("fork", "unable to");
1765
1766         case OK:
1767             SIGNAL (SIGINT, SIG_DFL);
1768             SIGNAL (SIGQUIT, SIG_DFL);
1769
1770             close (pd[1]);
1771             if (pd[0] != fileno (stdin)) {
1772                 dup2 (pd[0], fileno (stdin));
1773                 close (pd[0]);
1774             }
1775             execlp (name, r1bindex (name, '/'), NULL);
1776             fprintf (stderr, "unable to exec ");
1777             perror (name);
1778             _exit (-1);
1779
1780         default:
1781             close (pd[0]);
1782             if (pd[1] != fileno (stdout)) {
1783                 dup2 (pd[1], fileno (stdout));
1784                 close (pd[1]);
1785             }
1786     }
1787 }
1788
1789
1790 void
1791 m_pclose (void)
1792 {
1793     if (m_pid == NOTOK)
1794         return;
1795
1796     if (sd != NOTOK) {
1797         fflush (stdout);
1798         if (dup2 (sd, fileno (stdout)) == NOTOK)
1799             adios ("standard output", "unable to dup2()");
1800
1801         clearerr (stdout);
1802         close (sd);
1803         sd = NOTOK;
1804     }
1805     else
1806         fclose (stdout);
1807
1808     pidwait (m_pid, OK);
1809     m_pid = NOTOK;
1810 }