git.marmaro.de Git - mmh/blob - uip/mhl.c

   1 /*
   2 ** mhl.c -- the nmh message listing program
   3 **
   4 ** This code is Copyright (c) 2002, by the authors of nmh.  See the
   5 ** COPYRIGHT file in the root directory of the nmh distribution for
   6 ** complete copyright information.
   7 */
   8
   9 #include <h/mh.h>
  10 #include <h/signals.h>
  11 #include <h/addrsbr.h>
  12 #include <h/fmt_scan.h>
  13 #include <h/tws.h>
  14 #include <h/utils.h>
  15 #include <setjmp.h>
  16 #include <signal.h>
  17
  18 /*
  19 ** MAJOR BUG:
  20 ** for a component containing addresses, ADDRFMT, if COMPRESS is also
  21 ** set, then addresses get split wrong (not at the spaces between commas).
  22 ** To fix this correctly, putstr() should know about "atomic" strings that
  23 ** must NOT be broken across lines.  That's too difficult for right now
  24 ** (it turns out that there are a number of degernate cases), so in
  25 ** oneline(), instead of
  26 **
  27 **       (*onelp == '\n' && !onelp[1])
  28 **
  29 ** being a terminating condition,
  30 **
  31 **       (*onelp == '\n' && (!onelp[1] || (flags & ADDRFMT)))
  32 **
  33 ** is used instead.  This cuts the line prematurely, and gives us a much
  34 ** better chance of getting things right.
  35 */
  36
  37 #define ONECOMP  0
  38 #define TWOCOMP  1
  39 #define BODYCOMP 2
  40
  41 #define QUOTE  '\\'
  42
  43 static struct swit mhlswitches[] = {
  44 #define FOLDSW  0
  45         { "folder +folder", 0 },
  46 #define FORMSW  1
  47         { "form formfile", 0 },
  48 #define PROGSW  2
  49         { "moreproc program", 0 },
  50 #define LENSW  3
  51         { "length lines", 0 },
  52 #define WIDTHSW  4
  53         { "width columns", 0 },
  54 #define SLEEPSW  5
  55         { "sleep seconds",  0 },
  56 #define VERSIONSW  6
  57         { "version", 0 },
  58 #define HELPSW  7
  59         { "help", 0 },
  60 #define FORW1SW  8
  61         { "forward", -7 },
  62 #define FORW2SW  9
  63         { "forwall", -7 },
  64 #define DGSTSW  10
  65         { "digest list", -6 },
  66 #define VOLUMSW  11
  67         { "volume number", -6 },
  68 #define ISSUESW  12
  69         { "issue number", -5 },
  70 #define NBODYSW  13
  71         { "nobody", -6 },
  72         { NULL, 0 }
  73 };
  74
  75 #define NOCOMPONENT 0x000001  /* don't show component name   */
  76 #define UPPERCASE   0x000002  /* display in all upper case   */
  77 #define CENTER      0x000004  /* center line                 */
  78 #define CLEARTEXT   0x000008  /* cleartext                   */
  79 #define EXTRA       0x000010  /* an "extra" component        */
  80 #define HDROUTPUT   0x000020  /* already output              */
  81 #define LEFTADJUST  0x000040  /* left justify multiple lines */
  82 #define COMPRESS    0x000080  /* compress text               */
  83 #define ADDRFMT     0x000100  /* contains addresses          */
  84 #define DATEFMT     0x000200  /* contains dates              */
  85 #define FORMAT      0x000400  /* parse address/date/RFC-2047 field */
  86 #define INIT        0x000800  /* initialize component        */
  87 #define SPLIT       0x001000  /* split headers (don't concatenate) */
  88 #define NONEWLINE   0x002000  /* don't write trailing newline */
  89 #define LBITS       "\020\01NOCOMPONENT\02UPPERCASE\03CENTER\04CLEARTEXT\05EXTRA\06HDROUTPUT\07LEFTADJUST\010COMPRESS\011ADDRFMT\012DATEFMT\013FORMAT\014INIT\015SPLIT\016NONEWLINE"
  90 #define GFLAGS      (NOCOMPONENT | UPPERCASE | CENTER | LEFTADJUST | COMPRESS | SPLIT)
  91
  92 struct mcomp {
  93         char *c_name;  /* component name */
  94         char *c_text;  /* component text */
  95         char *c_ovtxt; /* text overflow indicator */
  96         char *c_nfs;   /* iff FORMAT */
  97         struct format *c_fmt;  /*  .. */
  98         int c_offset;  /* left margin indentation */
  99         int c_ovoff;   /* overflow indentation */
 100         int c_width;   /* width of field */
 101         int c_cwidth;  /* width of component */
 102         int c_length;  /* length in lines */
 103         long c_flags;
 104         struct mcomp *c_next;
 105 };
 106
 107 static struct mcomp *msghd = NULL;
 108 static struct mcomp *msgtl = NULL;
 109 static struct mcomp *fmthd = NULL;
 110 static struct mcomp *fmttl = NULL;
 111
 112 static struct mcomp global = {
 113         NULL, NULL, "", NULL, NULL, 0, -1, 80, -1, 40, 0, 0
 114 };
 115
 116 static struct mcomp holder = {
 117         NULL, NULL, NULL, NULL, NULL, 0, 0, 0, 0, 0, NOCOMPONENT, 0
 118 };
 119
 120 struct pair {
 121         char *p_name;
 122         long p_flags;
 123 };
 124
 125 static struct pair pairs[] = {
 126         { "Date", DATEFMT },
 127         { "From", ADDRFMT },
 128         { "Sender", ADDRFMT },
 129         { "Reply-To", ADDRFMT },
 130         { "To", ADDRFMT },
 131         { "Cc", ADDRFMT },
 132         { "Bcc", ADDRFMT },
 133         { "Resent-Date", DATEFMT },
 134         { "Resent-From", ADDRFMT },
 135         { "Resent-Sender", ADDRFMT },
 136         { "Resent-Reply-To", ADDRFMT },
 137         { "Resent-To", ADDRFMT },
 138         { "Resent-Cc", ADDRFMT },
 139         { "Resent-Bcc", ADDRFMT },
 140         { NULL, 0 }
 141 };
 142
 143 struct triple {
 144         char *t_name;
 145         long t_on;
 146         long t_off;
 147 };
 148
 149 static struct triple triples[] = {
 150         { "nocomponent",  NOCOMPONENT, 0 },
 151         { "uppercase", UPPERCASE, 0 },
 152         { "nouppercase", 0, UPPERCASE },
 153         { "center", CENTER, 0 },
 154         { "nocenter", 0, CENTER },
 155         { "leftadjust", LEFTADJUST, 0 },
 156         { "noleftadjust", 0, LEFTADJUST },
 157         { "compress", COMPRESS, 0 },
 158         { "nocompress", 0, COMPRESS },
 159         { "split", SPLIT, 0 },
 160         { "nosplit", 0, SPLIT },
 161         { "addrfield", ADDRFMT, DATEFMT },
 162         { "datefield", DATEFMT, ADDRFMT },
 163         { "newline", 0, NONEWLINE },
 164         { "nonewline", NONEWLINE, 0 },
 165         { NULL, 0, 0 }
 166 };
 167
 168
 169 static int dobody    = 1;
 170 static int forwflg   = 0;
 171 static int forwall   = 0;
 172
 173 static int sleepsw = NOTOK;
 174
 175 static char *digest = NULL;
 176 static int volume = 0;
 177 static int issue = 0;
 178
 179 static int exitstat = 0;
 180 static int mhldebug = 0;
 181
 182 #define PITTY  (-1)
 183 #define NOTTY  0
 184 static int ontty = NOTTY;
 185
 186 static int row;
 187 static int column;
 188
 189 static int lm;
 190 static int llim;
 191 static int ovoff;
 192 static int term;
 193 static int wid;
 194
 195 static char *ovtxt;
 196
 197 static unsigned char *onelp;
 198
 199 static char *parptr;
 200
 201 static int num_ignores = 0;
 202 static char *ignores[MAXARGS];
 203
 204 static  jmp_buf env;
 205 static  jmp_buf mhlenv;
 206
 207 static char delim3[] =
 208 "\n----------------------------------------------------------------------\n\n";
 209 static char delim4[] = "\n------------------------------\n\n";
 210
 211 static FILE *(*mhl_action) () = (FILE *(*) ()) 0;
 212
 213
 214 /*
 215 ** Redefine a couple of functions.
 216 ** These are undefined later in the code.
 217 */
 218 #define adios mhladios
 219 #define done  mhldone
 220
 221 /*
 222 ** prototypes
 223 */
 224 static void mhl_format(char *, int, int);
 225 static int evalvar(struct mcomp *);
 226 static int ptoi(char *, int *);
 227 static int ptos(char *, char **);
 228 static char *parse(void);
 229 static void process(char *, char *, int, int);
 230 static void mhlfile(FILE *, char *, int, int);
 231 static int mcomp_flags(char *);
 232 static char *mcomp_add(long, char *, char *);
 233 static void mcomp_format(struct mcomp *, struct mcomp *);
 234 static struct mcomp *add_queue(struct mcomp **, struct mcomp **,
 235                 char *, char *, int);
 236 static void free_queue(struct mcomp **, struct mcomp **);
 237 static void putcomp(struct mcomp *, struct mcomp *, int);
 238 static char *oneline(char *, long);
 239 static void putstr(char *);
 240 static void putch(char);
 241 static RETSIGTYPE intrser(int);
 242 static RETSIGTYPE pipeser(int);
 243 static RETSIGTYPE quitser(int);
 244 static void mhladios(char *, char *, ...);
 245 static void mhldone(int);
 246 static void m_popen(char *);
 247
 248 void m_pclose(void);
 249
 250 int SOprintf(char *, ...);  /* from termsbr.c */
 251 int sc_width(void);  /* from termsbr.c */
 252 int sc_length(void);  /* from termsbr.c */
 253
 254
 255 int
 256 main(int argc, char **argv)
 257 {
 258         int length = 0;
 259         int i, width = 0, vecp = 0;
 260         char *cp, *folder = NULL, *form = NULL;
 261         char buf[BUFSIZ], *files[MAXARGS];
 262         char **argp, **arguments;
 263         char *progsw = NULL;
 264
 265 #ifdef LOCALE
 266         setlocale(LC_ALL, "");
 267 #endif
 268
 269         invo_name = mhbasename(argv[0]);
 270
 271         /* read user profile/context */
 272         context_read();
 273
 274         arguments = getarguments(invo_name, argc, argv, 1);
 275         argp = arguments;
 276
 277         if ((cp = getenv("MHLDEBUG")) && *cp)
 278                 mhldebug++;
 279
 280         while ((cp = *argp++)) {
 281                 if (*cp == '-') {
 282                         switch (smatch(++cp, mhlswitches)) {
 283                         case AMBIGSW:
 284                                 ambigsw(cp, mhlswitches);
 285                                 done(1);
 286                         case UNKWNSW:
 287                                 adios(NULL, "-%s unknown\n", cp);
 288
 289                         case HELPSW:
 290                                 snprintf(buf, sizeof(buf), "%s [switches] [files ...]", invo_name);
 291                                 print_help(buf, mhlswitches, 1);
 292                                 done(1);
 293                         case VERSIONSW:
 294                                 print_version(invo_name);
 295                                 done(1);
 296
 297                         case FOLDSW:
 298                                 if (!(folder = *argp++) || *folder == '-')
 299                                         adios(NULL, "missing argument to %s",
 300                                                         argp[-2]);
 301                                 continue;
 302                         case FORMSW:
 303                                 if (!(form = *argp++) || *form == '-')
 304                                         adios(NULL, "missing argument to %s",
 305                                                         argp[-2]);
 306                                 continue;
 307
 308                         case SLEEPSW:
 309                                 if (!(cp = *argp++) || *cp == '-')
 310                                         adios(NULL, "missing argument to %s",
 311                                                         argp[-2]);
 312                                 sleepsw = atoi(cp);  /* ZERO ok! */
 313                                 continue;
 314
 315                         case PROGSW:
 316                                 if (!(progsw = *argp++) || *progsw == '-')
 317                                         adios(NULL, "missing argument to %s",
 318                                                         argp[-2]);
 319                                 continue;
 320
 321                         case LENSW:
 322                                 if (!(cp = *argp++) || *cp == '-')
 323                                         adios(NULL, "missing argument to %s",
 324                                                         argp[-2]);
 325                                 if ((length = atoi(cp)) < 1)
 326                                         adios(NULL, "bad argument %s %s",
 327                                                         argp[-2], cp);
 328                                 continue;
 329                         case WIDTHSW:
 330                                 if (!(cp = *argp++) || *cp == '-')
 331                                         adios(NULL, "missing argument to %s",
 332                                                         argp[-2]);
 333                                 if ((width = atoi(cp)) < 1)
 334                                         adios(NULL, "bad argument %s %s",
 335                                                         argp[-2], cp);
 336                                 continue;
 337
 338                         case DGSTSW:
 339                                 if (!(digest = *argp++) ||
 340                                                 *digest == '-')
 341                                         adios(NULL, "missing argument to %s",
 342                                                         argp[-2]);
 343                                 continue;
 344                         case ISSUESW:
 345                                 if (!(cp = *argp++) || *cp == '-')
 346                                         adios(NULL, "missing argument to %s",
 347                                                         argp[-2]);
 348                                 if ((issue = atoi(cp)) < 1)
 349                                         adios(NULL, "bad argument %s %s",
 350                                                         argp[-2], cp);
 351                                 continue;
 352                         case VOLUMSW:
 353                                 if (!(cp = *argp++) || *cp == '-')
 354                                         adios(NULL, "missing argument to %s",
 355                                                         argp[-2]);
 356                                 if ((volume = atoi(cp)) < 1)
 357                                         adios(NULL, "bad argument %s %s",
 358                                                         argp[-2], cp);
 359                                 continue;
 360
 361                         case FORW2SW:
 362                                 forwall++;  /* fall */
 363                         case FORW1SW:
 364                                 forwflg++;
 365                                 continue;
 366
 367                         case NBODYSW:
 368                                 dobody = 0;
 369                                 continue;
 370                         }
 371                 }
 372                 files[vecp++] = cp;
 373         }
 374
 375         if (!folder)
 376                 folder = getenv("mhfolder");
 377
 378         if (isatty(fileno(stdout))) {
 379                 if (mhl_action) {
 380                         SIGNAL(SIGINT, SIG_IGN);
 381                         SIGNAL2(SIGQUIT, quitser);
 382                 }
 383                 SIGNAL2(SIGPIPE, pipeser);
 384                 m_popen(progsw ? progsw : moreproc);
 385                 ontty = PITTY;
 386         } else {
 387                 ontty = NOTTY;
 388         }
 389
 390         mhl_format(form ? form : mhlformat, length, width);
 391
 392         if (vecp == 0) {
 393                 process(folder, NULL, 1, vecp = 1);
 394         } else {
 395                 for (i = 0; i < vecp; i++)
 396                         process(folder, files[i], i + 1, vecp);
 397         }
 398
 399         if (forwall) {
 400                 if (digest) {
 401                         printf("%s", delim4);
 402                         if (volume == 0) {
 403                                 snprintf(buf, sizeof(buf),
 404                                         "End of %s Digest\n", digest);
 405                         } else {
 406                                 snprintf(buf, sizeof(buf), "End of %s Digest [Volume %d Issue %d]\n", digest, volume, issue);
 407                         }
 408                         i = strlen(buf);
 409                         for (cp = buf + i; i > 1; i--)
 410                                 *cp++ = '*';
 411                         *cp++ = '\n';
 412                         *cp = 0;
 413                         printf("%s", buf);
 414                 } else
 415                         printf("\n------- End of Forwarded Message%s\n\n",
 416                                 vecp > 1 ? "s" : "");
 417         }
 418
 419         fflush(stdout);
 420         if (ferror(stdout)) {
 421                 adios("output", "error writing");
 422         }
 423
 424         if (ontty == PITTY)
 425                 m_pclose();
 426
 427         return exitstat;
 428 }
 429
 430
 431 static void
 432 mhl_format(char *file, int length, int width)
 433 {
 434         int i;
 435         char *bp, *cp, **ip;
 436         char *ap, buffer[BUFSIZ], name[NAMESZ];
 437         struct mcomp *c1;
 438         struct stat st;
 439         FILE *fp;
 440         static dev_t dev = 0;
 441         static ino_t ino = 0;
 442         static time_t mtime = 0;
 443
 444         if (fmthd != NULL) {
 445                 if (stat(etcpath(file), &st) != NOTOK
 446                         && mtime == st.st_mtime
 447                         && dev == st.st_dev
 448                         && ino == st.st_ino)
 449                         goto out;
 450                 else
 451                         free_queue(&fmthd, &fmttl);
 452         }
 453
 454         if ((fp = fopen(etcpath(file), "r")) == NULL)
 455                 adios(file, "unable to open format file");
 456
 457         if (fstat(fileno(fp), &st) != NOTOK) {
 458                 mtime = st.st_mtime;
 459                 dev = st.st_dev;
 460                 ino = st.st_ino;
 461         }
 462
 463         global.c_ovtxt = global.c_nfs = NULL;
 464         global.c_fmt = NULL;
 465         global.c_offset = 0;
 466         global.c_ovoff = -1;
 467         if ((i = sc_width()) > 5)
 468                 global.c_width = i;
 469         global.c_cwidth = -1;
 470         if ((i = sc_length()) > 5)
 471                 global.c_length = i - 1;
 472         global.c_flags = 0;
 473         *(ip = ignores) = NULL;
 474
 475         while (vfgets(fp, &ap) == OK) {
 476                 bp = ap;
 477                 if (*bp == ';')
 478                         continue;
 479
 480                 if ((cp = strchr(bp, '\n')))
 481                         *cp = 0;
 482
 483                 if (*bp == ':') {
 484                         c1 = add_queue(&fmthd, &fmttl, NULL, bp + 1,
 485                                         CLEARTEXT);
 486                         continue;
 487                 }
 488
 489                 parptr = bp;
 490                 strncpy(name, parse(), sizeof(name));
 491                 switch(*parptr) {
 492                 case '\0':
 493                 case ',':
 494                 case '=':
 495                         /*
 496                         ** Split this list of fields to ignore, and copy
 497                         ** it to the end of the current "ignores" list.
 498                         */
 499                         if (!mh_strcasecmp(name, "ignores")) {
 500                                 char **tmparray, **p;
 501                                 int n = 0;
 502
 503                                 /* split the fields */
 504                                 tmparray = brkstring(getcpy(++parptr), ",",
 505                                                 NULL);
 506
 507                                 /* count number of fields split */
 508                                 p = tmparray;
 509                                 while (*p++)
 510                                         n++;
 511
 512                                 /*
 513                                 ** copy pointers to split fields
 514                                 ** to ignores array
 515                                 */
 516                                 ip = copyip(tmparray, ip,
 517                                                 MAXARGS - num_ignores);
 518                                 num_ignores += n;
 519                                 continue;
 520                         }
 521                         parptr = bp;
 522                         while (*parptr) {
 523                                 if (evalvar(&global))
 524                                         adios(NULL, "format file syntax error: %s", bp);
 525                                 if (*parptr)
 526                                         parptr++;
 527                         }
 528                         continue;
 529
 530                 case ':':
 531                         c1 = add_queue(&fmthd, &fmttl, name, NULL, INIT);
 532                         while (*parptr == ':' || *parptr == ',') {
 533                                 parptr++;
 534                                 if (evalvar(c1))
 535                                         adios(NULL, "format file syntax error: %s", bp);
 536                         }
 537                         if (!c1->c_nfs && global.c_nfs) {
 538                                 if ((c1->c_flags & DATEFMT) &&
 539                                                 (global.c_flags & DATEFMT)) {
 540                                         c1->c_nfs = getcpy(global.c_nfs);
 541                                 } else if ((c1->c_flags & ADDRFMT) &&
 542                                                 (global.c_flags & ADDRFMT)) {
 543                                         c1->c_nfs = getcpy(global.c_nfs);
 544                                 }
 545                         }
 546                         continue;
 547
 548                 default:
 549                         adios(NULL, "format file syntax error: %s", bp);
 550                 }
 551         }
 552         fclose(fp);
 553
 554         if (mhldebug) {
 555                 for (c1 = fmthd; c1; c1 = c1->c_next) {
 556                         fprintf(stderr, "c1: name=\"%s\" text=\"%s\" ovtxt=\"%s\"\n", c1->c_name, c1->c_text, c1->c_ovtxt);
 557                         fprintf(stderr, "\tnfs=0x%x fmt=0x%x\n", (unsigned int)(unsigned long) c1->c_nfs, (unsigned int)(unsigned long) c1->c_fmt);
 558                         fprintf(stderr, "\toffset=%d ovoff=%d width=%d cwidth=%d length=%d\n", c1->c_offset, c1->c_ovoff, c1->c_width, c1->c_cwidth, c1->c_length);
 559                         fprintf (stderr, "\tflags=%s\n", snprintb(buffer, sizeof(buffer), (unsigned) c1->c_flags, LBITS));
 560                 }
 561         }
 562
 563 out:
 564         if (length)
 565                 global.c_length = length;
 566         if (width)
 567                 global.c_width = width;
 568         if (global.c_length < 5)
 569                 global.c_length = 10000;
 570         if (global.c_width < 5)
 571                 global.c_width = 10000;
 572 }
 573
 574
 575 static int
 576 evalvar(struct mcomp *c1)
 577 {
 578         char *cp, name[NAMESZ];
 579         struct triple *ap;
 580
 581         if (!*parptr)
 582                 return 0;
 583         strncpy(name, parse(), sizeof(name));
 584
 585         if (!mh_strcasecmp(name, "component")) {
 586                 if (ptos(name, &c1->c_text))
 587                         return 1;
 588                 c1->c_flags &= ~NOCOMPONENT;
 589                 return 0;
 590         }
 591
 592         if (!mh_strcasecmp(name, "overflowtext"))
 593                 return ptos(name, &c1->c_ovtxt);
 594
 595         if (!mh_strcasecmp(name, "formatfield")) {
 596                 char *nfs;
 597
 598                 if (ptos(name, &cp))
 599                         return 1;
 600                 cp = concat("=", cp, NULL);
 601                 nfs = new_fs(cp, NULL);
 602                 free(cp);
 603                 c1->c_nfs = getcpy(nfs);
 604                 c1->c_flags |= FORMAT;
 605                 return 0;
 606         }
 607
 608         if (!mh_strcasecmp(name, "decode")) {
 609                 char *nfs;
 610
 611                 nfs = new_fs("=%(decode{text})", NULL);
 612                 c1->c_nfs = getcpy(nfs);
 613                 c1->c_flags |= FORMAT;
 614                 return 0;
 615         }
 616
 617         if (!mh_strcasecmp(name, "offset"))
 618                 return ptoi(name, &c1->c_offset);
 619         if (!mh_strcasecmp(name, "overflowoffset"))
 620                 return ptoi(name, &c1->c_ovoff);
 621         if (!mh_strcasecmp(name, "width"))
 622                 return ptoi(name, &c1->c_width);
 623         if (!mh_strcasecmp(name, "compwidth"))
 624                 return ptoi(name, &c1->c_cwidth);
 625         if (!mh_strcasecmp(name, "length"))
 626                 return ptoi(name, &c1->c_length);
 627
 628         for (ap = triples; ap->t_name; ap++)
 629                 if (!mh_strcasecmp(ap->t_name, name)) {
 630                         c1->c_flags |= ap->t_on;
 631                         c1->c_flags &= ~ap->t_off;
 632                         return 0;
 633                 }
 634
 635         return 1;
 636 }
 637
 638
 639 static int
 640 ptoi(char *name, int *i)
 641 {
 642         char *cp;
 643
 644         if (*parptr++ != '=' || !*(cp = parse())) {
 645                 advise(NULL, "missing argument to variable %s", name);
 646                 return 1;
 647         }
 648
 649         *i = atoi(cp);
 650         return 0;
 651 }
 652
 653
 654 static int
 655 ptos(char *name, char **s)
 656 {
 657         char c, *cp;
 658
 659         if (*parptr++ != '=') {
 660                 advise(NULL, "missing argument to variable %s", name);
 661                 return 1;
 662         }
 663
 664         if (*parptr != '"') {
 665                 for (cp = parptr; *parptr && *parptr != ':' && *parptr != ',';
 666                                 parptr++)
 667                         continue;
 668         } else {
 669                 for (cp = ++parptr; *parptr && *parptr != '"'; parptr++)
 670                         if (*parptr == QUOTE)
 671                                 if (!*++parptr)
 672                                         parptr--;
 673         }
 674         c = *parptr;
 675         *parptr = 0;
 676         *s = getcpy(cp);
 677         if ((*parptr = c) == '"')
 678                 parptr++;
 679         return 0;
 680 }
 681
 682
 683 static char *
 684 parse(void)
 685 {
 686         int c;
 687         char *cp;
 688         static char result[NAMESZ];
 689
 690         for (cp = result; *parptr && (cp - result < NAMESZ); parptr++) {
 691                 c = *parptr;
 692                 if (isalnum(c)
 693                                 || c == '.'
 694                                 || c == '-'
 695                                 || c == '_'
 696                                 || c == '['
 697                                 || c == ']')
 698                         *cp++ = c;
 699                 else
 700                         break;
 701         }
 702         *cp = '\0';
 703
 704         return result;
 705 }
 706
 707
 708 static void
 709 process(char *folder, char *fname, int ofilen, int ofilec)
 710 {
 711         char *cp = NULL;
 712         FILE *fp = NULL;
 713         struct mcomp *c1;
 714
 715         switch (setjmp(env)) {
 716         case OK:
 717                 if (fname) {
 718                         fp = mhl_action ? (*mhl_action) (fname) :
 719                                         fopen(fname, "r");
 720                         if (fp == NULL) {
 721                                 advise(fname, "unable to open");
 722                                 exitstat++;
 723                                 return;
 724                         }
 725                 } else {
 726                         fname = "(stdin)";
 727                         fp = stdin;
 728                 }
 729                 cp = folder ? concat(folder, ":", fname, NULL) : getcpy(fname);
 730                 if (ontty != PITTY)
 731                         SIGNAL(SIGINT, intrser);
 732                 mhlfile(fp, cp, ofilen, ofilec);
 733                 /* FALL THROUGH! */
 734         default:
 735                 if (ontty != PITTY)
 736                         SIGNAL(SIGINT, SIG_IGN);
 737                 if (mhl_action == NULL && fp != stdin)
 738                         fclose(fp);
 739                 free(cp);
 740                 if (holder.c_text) {
 741                         free(holder.c_text);
 742                         holder.c_text = NULL;
 743                 }
 744                 free_queue(&msghd, &msgtl);
 745                 for (c1 = fmthd; c1; c1 = c1->c_next)
 746                         c1->c_flags &= ~HDROUTPUT;
 747                 break;
 748         }
 749 }
 750
 751
 752 static void
 753 mhlfile(FILE *fp, char *mname, int ofilen, int ofilec)
 754 {
 755         int state;
 756         struct mcomp *c1, *c2, *c3;
 757         char **ip, name[NAMESZ], buf[BUFSIZ];
 758
 759         if (forwall) {
 760                 if (digest)
 761                         printf("%s", ofilen == 1 ? delim3 : delim4);
 762                 else {
 763                         printf("\n-------");
 764                         if (ofilen == 1)
 765                                 printf(" Forwarded Message%s",
 766                                                 ofilec > 1 ? "s" : "");
 767                         else
 768                                 printf(" Message %d", ofilen);
 769                         printf("\n\n");
 770                 }
 771         } else if (ofilec > 1) {
 772                 if (ofilen > 1) {
 773                         printf("\n\n\n");
 774                 }
 775                 printf(">>> %s\n\n", mname);
 776         }
 777
 778         for (state = FLD;;) {
 779                 switch (state = m_getfld(state, name, buf, sizeof(buf), fp)) {
 780                 case FLD:
 781                 case FLDPLUS:
 782                         for (ip = ignores; *ip; ip++)
 783                                 if (!mh_strcasecmp(name, *ip)) {
 784                                         while (state == FLDPLUS)
 785                                                 state = m_getfld(state, name, buf, sizeof(buf), fp);
 786                                         break;
 787                                 }
 788                         if (*ip)
 789                                 continue;
 790
 791                         for (c2 = fmthd; c2; c2 = c2->c_next)
 792                                 if (!mh_strcasecmp(c2->c_name, name))
 793                                         break;
 794                         c1 = NULL;
 795                         if (!((c3 = c2 ? c2 : &global)->c_flags & SPLIT))
 796                                 for (c1 = msghd; c1; c1 = c1->c_next)
 797                                         if (!mh_strcasecmp(c1->c_name,
 798                                                         c3->c_name)) {
 799                                                 c1->c_text = mcomp_add(c1->c_flags, buf, c1->c_text);
 800                                                 break;
 801                                         }
 802                         if (c1 == NULL)
 803                                 c1 = add_queue(&msghd, &msgtl, name, buf, 0);
 804                         while (state == FLDPLUS) {
 805                                 state = m_getfld(state, name, buf,
 806                                                 sizeof(buf), fp);
 807                                 c1->c_text = add(buf, c1->c_text);
 808                         }
 809                         if (c2 == NULL)
 810                                 c1->c_flags |= EXTRA;
 811                         continue;
 812
 813                 case BODY:
 814                 case FILEEOF:
 815                         row = column = 0;
 816                         for (c1 = fmthd; c1; c1 = c1->c_next) {
 817                                 if (c1->c_flags & CLEARTEXT) {
 818                                         putcomp(c1, c1, ONECOMP);
 819                                         continue;
 820                                 }
 821                                 if (!mh_strcasecmp(c1->c_name, "messagename")) {
 822                                         holder.c_text = concat("(Message ",
 823                                                         mname, ")\n", NULL);
 824                                         putcomp(c1, &holder, ONECOMP);
 825                                         free(holder.c_text);
 826                                         holder.c_text = NULL;
 827                                         continue;
 828                                 }
 829                                 if (!mh_strcasecmp(c1->c_name, "extras")) {
 830                                         for (c2 = msghd; c2; c2 = c2->c_next)
 831                                                 if (c2->c_flags & EXTRA)
 832                                                         putcomp(c1, c2, TWOCOMP);
 833                                         continue;
 834                                 }
 835                                 if (dobody && !mh_strcasecmp(c1->c_name, "body")) {
 836                                         holder.c_text = mh_xmalloc(sizeof(buf));
 837                                         strncpy(holder.c_text, buf, sizeof(buf));
 838                                         while (state == BODY) {
 839                                                 putcomp(c1, &holder, BODYCOMP);
 840                                                 state = m_getfld(state, name, holder.c_text, sizeof(buf), fp);
 841                                         }
 842                                         free(holder.c_text);
 843                                         holder.c_text = NULL;
 844                                         continue;
 845                                 }
 846                                 for (c2 = msghd; c2; c2 = c2->c_next)
 847                                         if (!mh_strcasecmp(c2->c_name,
 848                                                         c1->c_name)) {
 849                                                 putcomp(c1, c2, ONECOMP);
 850                                                 if (!(c1->c_flags & SPLIT))
 851                                                         break;
 852                                         }
 853                         }
 854                         return;
 855
 856                 case LENERR:
 857                 case FMTERR:
 858                         advise(NULL, "format error in message %s", mname);
 859                         exitstat++;
 860                         return;
 861
 862                 default:
 863                         adios(NULL, "getfld() returned %d", state);
 864                 }
 865         }
 866 }
 867
 868
 869 static int
 870 mcomp_flags(char *name)
 871 {
 872         struct pair *ap;
 873
 874         for (ap = pairs; ap->p_name; ap++)
 875                 if (!mh_strcasecmp(ap->p_name, name))
 876                         return (ap->p_flags);
 877
 878         return 0;
 879 }
 880
 881
 882 static char *
 883 mcomp_add(long flags, char *s1, char *s2)
 884 {
 885         char *dp;
 886
 887         if (!(flags & ADDRFMT))
 888                 return add(s1, s2);
 889
 890         if (s2 && *(dp = s2 + strlen(s2) - 1) == '\n')
 891                 *dp = 0;
 892
 893         return add(s1, add(",\n", s2));
 894 }
 895
 896
 897 struct pqpair {
 898         char *pq_text;
 899         char *pq_error;
 900         struct pqpair *pq_next;
 901 };
 902
 903
 904 static void
 905 mcomp_format(struct mcomp *c1, struct mcomp *c2)
 906 {
 907         int dat[5];
 908         char *ap, *cp;
 909         char buffer[BUFSIZ], error[BUFSIZ];
 910         struct comp *cptr;
 911         struct pqpair *p, *q;
 912         struct pqpair pq;
 913         struct mailname *mp;
 914
 915         ap = c2->c_text;
 916         c2->c_text = NULL;
 917         dat[0] = 0;
 918         dat[1] = 0;
 919         dat[2] = 0;
 920         dat[3] = sizeof(buffer) - 1;
 921         dat[4] = 0;
 922         fmt_compile(c1->c_nfs, &c1->c_fmt);
 923
 924         if (!(c1->c_flags & ADDRFMT)) {
 925                 FINDCOMP(cptr, "text");
 926                 if (cptr)
 927                         cptr->c_text = ap;
 928                 if ((cp = strrchr(ap, '\n')))  /* drop ending newline */
 929                         if (!cp[1])
 930                                 *cp = 0;
 931
 932                 fmt_scan(c1->c_fmt, buffer, sizeof(buffer) - 1, dat);
 933                 /* Don't need to append a newline, dctime() already did */
 934                 c2->c_text = getcpy(buffer);
 935
 936                 free(ap);
 937                 return;
 938         }
 939
 940         (q = &pq)->pq_next = NULL;
 941         while ((cp = getname(ap))) {
 942                 if ((p = (struct pqpair *)
 943                                 calloc((size_t) 1, sizeof(*p))) == NULL)
 944                         adios(NULL, "unable to allocate pqpair memory");
 945
 946                 if ((mp = getm(cp, NULL, 0, AD_NAME, error)) == NULL) {
 947                         p->pq_text = getcpy(cp);
 948                         p->pq_error = getcpy(error);
 949                 } else {
 950                         p->pq_text = getcpy(mp->m_text);
 951                         mnfree(mp);
 952                 }
 953                 q = (q->pq_next = p);
 954         }
 955
 956         for (p = pq.pq_next; p; p = q) {
 957                 FINDCOMP(cptr, "text");
 958                 if (cptr)
 959                         cptr->c_text = p->pq_text;
 960                 FINDCOMP(cptr, "error");
 961                 if (cptr)
 962                         cptr->c_text = p->pq_error;
 963
 964                 fmt_scan(c1->c_fmt, buffer, sizeof(buffer) - 1, dat);
 965                 if (*buffer) {
 966                         if (c2->c_text)
 967                                 c2->c_text = add(",\n", c2->c_text);
 968                         if (*(cp = buffer + strlen(buffer) - 1) == '\n')
 969                                 *cp = 0;
 970                         c2->c_text = add(buffer, c2->c_text);
 971                 }
 972
 973                 free(p->pq_text);
 974                 if (p->pq_error)
 975                         free(p->pq_error);
 976                 q = p->pq_next;
 977                 free((char *) p);
 978         }
 979
 980         c2->c_text = add("\n", c2->c_text);
 981         free (ap);
 982 }
 983
 984
 985 static struct mcomp *
 986 add_queue(struct mcomp **head, struct mcomp **tail, char *name,
 987                 char *text, int flags)
 988 {
 989         struct mcomp *c1;
 990
 991         if ((c1 = (struct mcomp *) calloc((size_t) 1, sizeof(*c1))) == NULL)
 992                 adios(NULL, "unable to allocate comp memory");
 993
 994         c1->c_flags = flags & ~INIT;
 995         if ((c1->c_name = name ? getcpy(name) : NULL))
 996                 c1->c_flags |= mcomp_flags(c1->c_name);
 997         c1->c_text = text ? getcpy(text) : NULL;
 998         if (flags & INIT) {
 999                 if (global.c_ovtxt)
1000                         c1->c_ovtxt = getcpy(global.c_ovtxt);
1001                 c1->c_offset = global.c_offset;
1002                 c1->c_ovoff = global. c_ovoff;
1003                 c1->c_width = c1->c_length = 0;
1004                 c1->c_cwidth = global.c_cwidth;
1005                 c1->c_flags |= global.c_flags & GFLAGS;
1006         }
1007         if (*head == NULL)
1008                 *head = c1;
1009         if (*tail != NULL)
1010                 (*tail)->c_next = c1;
1011         *tail = c1;
1012
1013         return c1;
1014 }
1015
1016
1017 static void
1018 free_queue(struct mcomp **head, struct mcomp **tail)
1019 {
1020         struct mcomp *c1, *c2;
1021
1022         for (c1 = *head; c1; c1 = c2) {
1023                 c2 = c1->c_next;
1024                 if (c1->c_name)
1025                         free(c1->c_name);
1026                 if (c1->c_text)
1027                         free(c1->c_text);
1028                 if (c1->c_ovtxt)
1029                         free(c1->c_ovtxt);
1030                 if (c1->c_nfs)
1031                         free(c1->c_nfs);
1032                 if (c1->c_fmt)
1033                         free((char *) c1->c_fmt);
1034                 free((char *) c1);
1035         }
1036
1037         *head = *tail = NULL;
1038 }
1039
1040
1041 static void
1042 putcomp(struct mcomp *c1, struct mcomp *c2, int flag)
1043 {
1044         int count, cchdr;
1045         unsigned char *cp;
1046
1047         cchdr = 0;
1048         lm = 0;
1049         llim = c1->c_length ? c1->c_length : -1;
1050         wid = c1->c_width ? c1->c_width : global.c_width;
1051         ovoff = (c1->c_ovoff >= 0 ? c1->c_ovoff : global.c_ovoff)
1052                         + c1->c_offset;
1053         if ((ovtxt = c1->c_ovtxt ? c1->c_ovtxt : global.c_ovtxt) == NULL)
1054                 ovtxt = "";
1055         if (wid < ovoff + strlen(ovtxt) + 5)
1056                 adios(NULL, "component: %s width(%d) too small for overflow(%d)", c1->c_name, wid, ovoff + strlen(ovtxt) + 5);
1057         onelp = NULL;
1058
1059         if (c1->c_flags & CLEARTEXT) {
1060                 putstr(c1->c_text);
1061                 putstr("\n");
1062                 return;
1063         }
1064
1065         if (c1->c_nfs && (c1->c_flags & (ADDRFMT | DATEFMT | FORMAT)))
1066                 mcomp_format(c1, c2);
1067
1068         if (c1->c_flags & CENTER) {
1069                 count = (c1->c_width ? c1->c_width : global.c_width)
1070                                 - c1->c_offset - strlen(c2->c_text);
1071                 if (!(c1->c_flags & HDROUTPUT) && !(c1->c_flags & NOCOMPONENT))
1072                         count -= strlen(c1->c_text ? c1->c_text : c1->c_name)
1073                                         + 2;
1074                 lm = c1->c_offset + (count / 2);
1075         } else {
1076                 if (c1->c_offset)
1077                         lm = c1->c_offset;
1078         }
1079
1080         if (!(c1->c_flags & HDROUTPUT) && !(c1->c_flags & NOCOMPONENT)) {
1081                 if (c1->c_flags & UPPERCASE)  /* uppercase component also */
1082                         for (cp = (c1->c_text ? c1->c_text : c1->c_name); *cp; cp++)
1083                                 if (islower(*cp))
1084                                         *cp = toupper(*cp);
1085                 putstr(c1->c_text ? c1->c_text : c1->c_name);
1086                 if (flag != BODYCOMP) {
1087                         putstr(": ");
1088                         if (!(c1->c_flags & SPLIT))
1089                                 c1->c_flags |= HDROUTPUT;
1090
1091                 cchdr++;
1092                 if ((count = c1->c_cwidth -
1093                         strlen(c1->c_text ? c1->c_text : c1->c_name) - 2) > 0)
1094                         while (count--)
1095                                 putstr(" ");
1096                 } else
1097                         c1->c_flags |= HDROUTPUT;  /* for BODYCOMP */
1098         }
1099
1100         if (flag == TWOCOMP && !(c2->c_flags & HDROUTPUT)
1101                 && !(c2->c_flags & NOCOMPONENT)) {
1102                 if (c1->c_flags & UPPERCASE)
1103                         for (cp = c2->c_name; *cp; cp++)
1104                                 if (islower(*cp))
1105                                         *cp = toupper(*cp);
1106                 putstr(c2->c_name);
1107                 putstr(": ");
1108                 if (!(c1->c_flags & SPLIT))
1109                         c2->c_flags |= HDROUTPUT;
1110
1111                 cchdr++;
1112                 if ((count = c1->c_cwidth - strlen(c2->c_name) - 2) > 0)
1113                         while (count--)
1114                                 putstr(" ");
1115         }
1116         if (c1->c_flags & UPPERCASE)
1117                 for (cp = c2->c_text; *cp; cp++)
1118                         if (islower(*cp))
1119                                 *cp = toupper(*cp);
1120
1121         count = 0;
1122         if (cchdr) {
1123                 if (flag == TWOCOMP)
1124                         count = (c1->c_cwidth >= 0) ?
1125                                         c1->c_cwidth : strlen(c2->c_name) + 2;
1126                 else
1127                         count = (c1->c_cwidth >= 0) ?
1128                                         c1->c_cwidth : strlen(c1->c_text ?
1129                                         c1->c_text : c1->c_name) + 2;
1130         }
1131         count += c1->c_offset;
1132
1133         if ((cp = oneline(c2->c_text, c1->c_flags)))
1134            putstr(cp);
1135         if (term == '\n')
1136                 putstr("\n");
1137         while ((cp = oneline(c2->c_text, c1->c_flags))) {
1138                 lm = count;
1139                 if (flag == BODYCOMP && !(c1->c_flags & NOCOMPONENT))
1140                         putstr(c1->c_text ? c1->c_text : c1->c_name);
1141                 if (*cp)
1142                         putstr(cp);
1143                 if (term == '\n')
1144                         putstr("\n");
1145         }
1146         if (flag == BODYCOMP && term == '\n')
1147                 c1->c_flags &= ~HDROUTPUT;  /* Buffer ended on a newline */
1148 }
1149
1150
1151 static char *
1152 oneline(char *stuff, long flags)
1153 {
1154         int spc;
1155         char *cp, *ret;
1156
1157         if (onelp == NULL)
1158                 onelp = stuff;
1159         if (*onelp == 0)
1160                 return (onelp = NULL);
1161
1162         ret = onelp;
1163         term = 0;
1164         if (flags & COMPRESS) {
1165                 for (spc = 1, cp = ret; *onelp; onelp++)
1166                         if (isspace(*onelp)) {
1167                                 if (*onelp == '\n' &&
1168                                                 (!onelp[1] ||
1169                                                 (flags & ADDRFMT))) {
1170                                         term = '\n';
1171                                         *onelp++ = 0;
1172                                         break;
1173                                 } else if (!spc) {
1174                                         *cp++ = ' ';
1175                                         spc++;
1176                                 }
1177                         } else {
1178                                 *cp++ = *onelp;
1179                                 spc = 0;
1180                         }
1181
1182                 *cp = 0;
1183         } else {
1184                 while (*onelp && *onelp != '\n')
1185                         onelp++;
1186                 if (*onelp == '\n') {
1187                         term = '\n';
1188                         *onelp++ = 0;
1189                 }
1190                 if (flags & LEFTADJUST)
1191                         while (*ret == ' ' || *ret == '\t')
1192                                 ret++;
1193         }
1194         if (*onelp == 0 && term == '\n' && (flags & NONEWLINE))
1195                 term = 0;
1196
1197         return ret;
1198 }
1199
1200
1201 static void
1202 putstr(char *string)
1203 {
1204         if (!column && lm > 0) {
1205                 while (lm > 0)
1206                         if (lm >= 8) {
1207                                 putch('\t');
1208                                 lm -= 8;
1209                         } else {
1210                                 putch(' ');
1211                                 lm--;
1212                         }
1213         }
1214         lm = 0;
1215         while (*string)
1216                 putch(*string++);
1217 }
1218
1219
1220 static void
1221 putch(char ch)
1222 {
1223         char buf[BUFSIZ];
1224
1225         if (llim == 0)
1226                 return;
1227
1228         switch (ch) {
1229         case '\n':
1230                 if (llim > 0)
1231                         llim--;
1232                 column = 0;
1233                 row++;
1234                 if (row != global.c_length)
1235                         break;
1236                 fflush(stdout);
1237                 buf[0] = 0;
1238                 read(fileno(stdout), buf, sizeof(buf));
1239                 if (strchr(buf, '\n')) {
1240                         row = 0;
1241                 } else {
1242                         putchar('\n');
1243                         row = global.c_length / 3;
1244                 }
1245                 return;
1246
1247         case '\t':
1248                 column |= 07;
1249                 column++;
1250                 break;
1251
1252         case '\b':
1253                 column--;
1254                 break;
1255
1256         case '\r':
1257                 column = 0;
1258                 break;
1259
1260         default:
1261                 /*
1262                 ** If we are forwarding this message, and the first
1263                 ** column contains a dash, then add a dash and a space.
1264                 */
1265                 if (column == 0 && forwflg && ch == '-') {
1266                         putchar('-');
1267                         putchar(' ');
1268                 }
1269                 if (ch >= ' ')
1270                         column++;
1271                 break;
1272         }
1273
1274         if (column >= wid) {
1275                 putch('\n');
1276                 if (ovoff > 0)
1277                         lm = ovoff;
1278                 putstr(ovtxt ? ovtxt : "");
1279                 putch(ch);
1280                 return;
1281         }
1282
1283         putchar(ch);
1284 }
1285
1286
1287 static RETSIGTYPE
1288 intrser(int i)
1289 {
1290 #ifndef RELIABLE_SIGNALS
1291         SIGNAL(SIGINT, intrser);
1292 #endif
1293
1294         discard(stdout);
1295         putchar('\n');
1296         longjmp(env, DONE);
1297 }
1298
1299
1300 static RETSIGTYPE
1301 pipeser(int i)
1302 {
1303 #ifndef RELIABLE_SIGNALS
1304         SIGNAL(SIGPIPE, pipeser);
1305 #endif
1306
1307         done(NOTOK);
1308 }
1309
1310
1311 static RETSIGTYPE
1312 quitser(int i)
1313 {
1314 #ifndef RELIABLE_SIGNALS
1315         SIGNAL(SIGQUIT, quitser);
1316 #endif
1317
1318         putchar('\n');
1319         fflush(stdout);
1320         done(NOTOK);
1321 }
1322
1323
1324 #undef adios
1325 #undef done
1326
1327 static void
1328 mhladios(char *what, char *fmt, ...)
1329 {
1330         va_list ap;
1331
1332         va_start(ap, fmt);
1333         advertise(what, NULL, fmt, ap);
1334         va_end(ap);
1335         mhldone(1);
1336 }
1337
1338
1339 static void
1340 mhldone(int status)
1341 {
1342         exitstat = status;
1343         if (mhl_action)
1344                 longjmp(mhlenv, DONE);
1345         else
1346                 done(exitstat);
1347 }
1348
1349
1350 static int m_pid = NOTOK;
1351 static int sd = NOTOK;
1352
1353 static void
1354 m_popen(char *name)
1355 {
1356         int pd[2];
1357
1358         if (mhl_action && (sd = dup(fileno(stdout))) == NOTOK)
1359                 adios("standard output", "unable to dup()");
1360
1361         if (pipe(pd) == NOTOK)
1362                 adios("pipe", "unable to");
1363
1364         switch (m_pid = fork()) {
1365         case NOTOK:
1366                 adios("fork", "unable to");
1367
1368         case OK:
1369                 SIGNAL(SIGINT, SIG_DFL);
1370                 SIGNAL(SIGQUIT, SIG_DFL);
1371
1372                 close(pd[1]);
1373                 if (pd[0] != fileno(stdin)) {
1374                         dup2(pd[0], fileno(stdin));
1375                         close(pd[0]);
1376                 }
1377                 execlp(name, mhbasename(name), NULL);
1378                 fprintf(stderr, "unable to exec ");
1379                 perror(name);
1380                 _exit(-1);
1381
1382         default:
1383                 close(pd[0]);
1384                 if (pd[1] != fileno(stdout)) {
1385                         dup2(pd[1], fileno(stdout));
1386                         close(pd[1]);
1387                 }
1388         }
1389 }
1390
1391
1392 void
1393 m_pclose(void)
1394 {
1395         if (m_pid == NOTOK)
1396                 return;
1397
1398         if (sd != NOTOK) {
1399                 fflush(stdout);
1400                 if (dup2(sd, fileno(stdout)) == NOTOK)
1401                         adios("standard output", "unable to dup2()");
1402
1403                 clearerr(stdout);
1404                 close(sd);
1405                 sd = NOTOK;
1406         }
1407         else
1408                 fclose(stdout);
1409
1410         pidwait(m_pid, OK);
1411         m_pid = NOTOK;
1412 }