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

   1 /*
   2 ** repl.c -- reply to a message
   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/utils.h>
  11 #include <h/addrsbr.h>
  12 #include <h/fmt_scan.h>
  13 #include <sys/file.h>  /* L_SET */
  14 #include <errno.h>
  15 #include <unistd.h>
  16 #include <ctype.h>
  17 #include <sys/stat.h>
  18 #include <locale.h>
  19 #include <sysexits.h>
  20
  21 static struct swit switches[] = {
  22 #define GROUPSW  0
  23         { "group", 0 },
  24 #define NGROUPSW  1
  25         { "nogroup", 2 },
  26 #define ANNOSW  2
  27         { "annotate", 0 },
  28 #define NANNOSW  3
  29         { "noannotate", 2 },
  30 #define CCSW  4
  31         { "cc all|to|cc|me", 0 },
  32 #define NCCSW  5
  33         { "nocc type", 2 },
  34 #define EDITRSW  6
  35         { "editor editor", 0 },
  36 #define FILTSW  7
  37         { "filter filterfile", 0 },
  38 #define NFILTSW  8
  39         { "nofilter", 2 },
  40 #define FORMSW  9
  41         { "form formfile", 0 },
  42 #define MIMESW  10
  43         { "mime", 0 },
  44 #define NMIMESW  11
  45         { "nomime", 2 },
  46 #define QURYSW  12
  47         { "query", 0 },
  48 #define NQURYSW  13
  49         { "noquery", 2 },
  50 #define WHATSW  14
  51         { "whatnowproc program", 0 },
  52 #define VERSIONSW  15
  53         { "Version", 0 },
  54 #define HELPSW  16
  55         { "help", 0 },
  56 #define FILESW  17
  57         { "file file", 4 },  /* interface from msh */
  58 #define BILDSW  18
  59         { "build", 5 },  /* interface from mhe */
  60         { NULL, 0 }
  61 };
  62
  63 static struct swit ccswitches[] = {
  64 #define CTOSW  0
  65         { "to", 0 },
  66 #define CCCSW  1
  67         { "cc", 0 },
  68 #define CMESW  2
  69         { "me", 0 },
  70 #define CALSW  3
  71         { "all", 0 },
  72         { NULL, 0 }
  73 };
  74
  75 /*
  76 ** Buffer size for content part of header fields.
  77 ** We want this to be large enough so that we don't
  78 ** do a lot of extra FLDPLUS calls on m_getfld but
  79 ** small enough so that we don't snarf the entire
  80 ** message body when we're not going to use any of it.
  81 */
  82 #define SBUFSIZ 256
  83
  84 static short ccto = -1;
  85 static short cccc = -1;
  86 static short ccme = -1;
  87 static short querysw = 0;
  88
  89 static short groupreply = 0;  /* Is this a group reply? */
  90
  91 static int mime = 0;  /* include original as MIME part */
  92 static char *form   = NULL;  /* form (components) file */
  93 static char *filter = NULL;  /* message filter file */
  94
  95 static int dftype=0;
  96
  97 static char *badaddrs = NULL;
  98 static char *dfhost = NULL;
  99
 100 static struct mailname mq;
 101
 102 static struct format *fmt;
 103
 104 static int ncomps = 0;  /* # of interesting components */
 105 static char **compbuffers = NULL;  /* buffers for component text */
 106 static struct comp **used_buf = NULL;  /* stack for comp that use buffers */
 107
 108 static int dat[5];  /* aux. data for format routine */
 109
 110 static char *addrcomps[] = {
 111         "from",
 112         "sender",
 113         "reply-to",
 114         "to",
 115         "cc",
 116         "bcc",
 117         "resent-from",
 118         "resent-sender",
 119         "resent-reply-to",
 120         "resent-to",
 121         "resent-cc",
 122         "resent-bcc",
 123         NULL
 124 };
 125
 126 /*
 127 ** static prototypes
 128 */
 129 static void docc(char *, int);
 130 static int insert(struct mailname *);
 131 static void replfilter(FILE *, FILE *, char *);
 132 static void replout(FILE *, char *, struct msgs *, int,
 133                 char *, char *);
 134
 135
 136 int
 137 main(int argc, char **argv)
 138 {
 139         int anot = 0;
 140         char *cp, *cwd, *maildir, *file = NULL;
 141         char *folder = NULL, *msg = NULL;
 142         char *ed = NULL, drft[BUFSIZ], buf[BUFSIZ];
 143         char **argp, **arguments;
 144         struct msgs *mp = NULL;
 145         FILE *in;
 146         int buildsw = 0;
 147
 148         filter = getcpy(etcpath(mhlreply));
 149
 150         setlocale(LC_ALL, "");
 151         invo_name = mhbasename(argv[0]);
 152
 153         /* read user profile/context */
 154         context_read();
 155
 156         arguments = getarguments(invo_name, argc, argv, 1);
 157         argp = arguments;
 158
 159         while ((cp = *argp++)) {
 160                 if (*cp == '-') {
 161                         switch (smatch(++cp, switches)) {
 162                         case AMBIGSW:
 163                                 ambigsw(cp, switches);
 164                                 exit(EX_USAGE);
 165                         case UNKWNSW:
 166                                 adios(EX_USAGE, NULL, "-%s unknown", cp);
 167
 168                         case HELPSW:
 169                                 snprintf(buf, sizeof(buf), "%s: [+folder] [msg] [switches]", invo_name);
 170                                 print_help(buf, switches, 1);
 171                                 exit(argc == 2 ? EX_OK : EX_USAGE);
 172                         case VERSIONSW:
 173                                 print_version(invo_name);
 174                                 exit(argc == 2 ? EX_OK : EX_USAGE);
 175
 176                         case GROUPSW:
 177                                 groupreply++;
 178                                 continue;
 179                         case NGROUPSW:
 180                                 groupreply = 0;
 181                                 continue;
 182
 183                         case ANNOSW:
 184                                 anot++;
 185                                 continue;
 186                         case NANNOSW:
 187                                 anot = 0;
 188                                 continue;
 189
 190                         case CCSW:
 191                                 if (!(cp = *argp++) || *cp == '-')
 192                                         adios(EX_USAGE, NULL, "missing argument to %s",
 193                                                         argp[-2]);
 194                                 docc(cp, 1);
 195                                 continue;
 196                         case NCCSW:
 197                                 if (!(cp = *argp++) || *cp == '-')
 198                                         adios(EX_USAGE, NULL, "missing argument to %s",
 199                                                         argp[-2]);
 200                                 docc(cp, 0);
 201                                 continue;
 202
 203                         case EDITRSW:
 204                                 if (!(ed = *argp++) || *ed == '-')
 205                                         adios(EX_USAGE, NULL, "missing argument to %s",
 206                                                         argp[-2]);
 207                                 continue;
 208
 209                         case WHATSW:
 210                                 if (!(whatnowproc = *argp++) ||
 211                                                 *whatnowproc == '-')
 212                                         adios(EX_USAGE, NULL, "missing argument to %s",
 213                                                         argp[-2]);
 214                                 continue;
 215
 216                         case BILDSW:
 217                                 buildsw++;
 218                                 continue;
 219
 220                         case FILESW:
 221                                 if (file)
 222                                         adios(EX_USAGE, NULL, "only one file at a time!");
 223                                 if (!(cp = *argp++) || *cp == '-')
 224                                         adios(EX_USAGE, NULL, "missing argument to %s",
 225                                                         argp[-2]);
 226                                 file = getcpy(expanddir(cp));
 227                                 continue;
 228                         case FORMSW:
 229                                 if (!(form = *argp++) || *form == '-')
 230                                         adios(EX_USAGE, NULL, "missing argument to %s",
 231                                                         argp[-2]);
 232                                 continue;
 233
 234                         case FILTSW:
 235                                 if (!(cp = *argp++) || *cp == '-')
 236                                         adios(EX_USAGE, NULL, "missing argument to %s",
 237                                                         argp[-2]);
 238                                 filter = getcpy(etcpath(cp));
 239                                 continue;
 240                         case NFILTSW:
 241                                 filter = NULL;
 242                                 continue;
 243
 244                         case MIMESW:
 245                                 mime++;
 246                                 continue;
 247                         case NMIMESW:
 248                                 mime = 0;
 249                                 continue;
 250
 251                         case QURYSW:
 252                                 querysw++;
 253                                 continue;
 254                         case NQURYSW:
 255                                 querysw = 0;
 256                                 continue;
 257
 258                         }
 259                 }
 260                 if (*cp == '+' || *cp == '@') {
 261                         if (folder)
 262                                 adios(EX_USAGE, NULL, "only one folder at a time!");
 263                         else
 264                                 folder = getcpy(expandfol(cp));
 265                 } else {
 266                         if (msg)
 267                                 adios(EX_USAGE, NULL, "only one message at a time!");
 268                         else
 269                                 msg = cp;
 270                 }
 271         }
 272
 273         if (ccto == -1)
 274                 ccto = groupreply;
 275         if (cccc == -1)
 276                 cccc = groupreply;
 277         if (ccme == -1)
 278                 ccme = groupreply;
 279
 280         cwd = getcpy(pwd());
 281
 282         if (file && (msg || folder))
 283                 adios(EX_USAGE, NULL, "can't mix files and folders/msgs");
 284
 285         strncpy(drft, buildsw ? toabsdir("reply") : m_draft(seq_beyond),
 286                         sizeof(drft));
 287         /*
 288         ** FIXME: (concerning MHE support (buildsw) only)
 289         ** There's no check if the draft already exists. mmh has removed
 290         ** this case by having the draft folder. I won't add code only to
 291         ** handle this legacy issue for MHE. -- meillo@marmaro.de 2012-05
 292         */
 293
 294         if (file) {
 295                 /*
 296                 ** We are replying to a file.
 297                 */
 298                 anot = 0;  /* we don't want to annotate a file */
 299         } else {
 300                 /*
 301                 ** We are replying to a message.
 302                 */
 303                 if (!msg)
 304                         msg = seq_cur;
 305                 if (!folder)
 306                         folder = getcurfol();
 307                 maildir = toabsdir(folder);
 308
 309                 if (chdir(maildir) == NOTOK)
 310                         adios(EX_OSERR, maildir, "unable to change directory to");
 311
 312                 /* read folder and create message structure */
 313                 if (!(mp = folder_read(folder)))
 314                         adios(EX_IOERR, NULL, "unable to read folder %s", folder);
 315
 316                 /* check for empty folder */
 317                 if (mp->nummsg == 0)
 318                         adios(EX_DATAERR, NULL, "no messages in %s", folder);
 319
 320                 /* parse the message range/sequence/name and set SELECTED */
 321                 if (!m_convert(mp, msg))
 322                         exit(EX_SOFTWARE);
 323                 seq_setprev(mp);  /* set the previous-sequence */
 324
 325                 if (mp->numsel > 1)
 326                         adios(EX_USAGE, NULL, "only one message at a time!");
 327
 328                 context_replace(curfolder, folder); /* update current folder */
 329                 seq_setcur(mp, mp->lowsel);  /* update current message  */
 330                 seq_save(mp);  /* synchronize sequences   */
 331                 context_save();  /* save the context file   */
 332         }
 333
 334         msg = file ? file : getcpy(m_name(mp->lowsel));
 335
 336         if ((in = fopen(msg, "r")) == NULL)
 337                 adios(EX_IOERR, msg, "unable to open");
 338
 339         /* find form (components) file */
 340         if (!form) {
 341                 if (groupreply)
 342                         form = etcpath(replgroupcomps);
 343                 else
 344                         form = etcpath(replcomps);
 345         }
 346
 347         replout(in, drft, mp, mime, form, filter);
 348         fclose(in);
 349
 350         if (buildsw)
 351                 exit(EX_OK);
 352         what_now(ed, NOUSE, drft, msg, 0, mp, anot ? "Replied" : NULL, cwd);
 353         return EX_OSERR;
 354 }
 355
 356 static void
 357 docc(char *cp, int ccflag)
 358 {
 359         switch (smatch(cp, ccswitches)) {
 360         case AMBIGSW:
 361                 ambigsw(cp, ccswitches);
 362                 exit(EX_USAGE);
 363         case UNKWNSW:
 364                 adios(EX_USAGE, NULL, "-%scc %s unknown", ccflag ? "" : "no", cp);
 365
 366         case CTOSW:
 367                 ccto = ccflag;
 368                 break;
 369
 370         case CCCSW:
 371                 cccc = ccflag;
 372                 break;
 373
 374         case CMESW:
 375                 ccme = ccflag;
 376                 break;
 377
 378         case CALSW:
 379                 ccto = cccc = ccme = ccflag;
 380                 break;
 381         }
 382 }
 383
 384
 385
 386
 387 static void
 388 replout(FILE *inb, char *drft, struct msgs *mp,
 389         int mime, char *form, char *filter)
 390 {
 391         int state, i;
 392         struct comp *cptr;
 393         char *tmpbuf;
 394         char **nxtbuf;
 395         char **ap;
 396         struct comp **savecomp;
 397         int char_read = 0, format_len, mask;
 398         char name[NAMESZ], *scanl;
 399         unsigned char *cp;
 400         FILE *out;
 401
 402         mask = umask(~m_gmprot());
 403         if ((out = fopen(drft, "w")) == NULL)
 404                 adios(EX_CANTCREAT, drft, "unable to create");
 405
 406         umask(mask);
 407
 408         /* get new format string */
 409         cp = new_fs(form, NULL);
 410         format_len = strlen(cp);
 411
 412         /* compile format string */
 413         ncomps = fmt_compile(cp, &fmt) + 1;
 414
 415         if (!(nxtbuf = compbuffers = (char **)
 416                         mh_xcalloc((size_t) ncomps, sizeof(char *))))
 417                 adios(EX_OSERR, NULL, "unable to allocate component buffers");
 418         if (!(savecomp = used_buf = (struct comp **)
 419                         mh_xcalloc((size_t) (ncomps+1), sizeof(struct comp *))))
 420                 adios(EX_OSERR, NULL, "unable to allocate component buffer stack");
 421         savecomp += ncomps + 1;
 422         *--savecomp = NULL;  /* point at zero'd end minus 1 */
 423
 424         for (i = ncomps; i--; )
 425                 *nxtbuf++ = mh_xmalloc(SBUFSIZ);
 426
 427         nxtbuf = compbuffers;  /* point at start */
 428         tmpbuf = *nxtbuf++;
 429
 430         for (ap = addrcomps; *ap; ap++) {
 431                 FINDCOMP(cptr, *ap);
 432                 if (cptr)
 433                         cptr->c_type |= CT_ADDR;
 434         }
 435
 436         /*
 437         ** ignore any components killed by command line switches
 438         */
 439         if (!ccto) {
 440                 FINDCOMP(cptr, "to");
 441                 if (cptr)
 442                         cptr->c_name = "";
 443         }
 444         if (!cccc) {
 445                 FINDCOMP(cptr, "cc");
 446                 if (cptr)
 447                         cptr->c_name = "";
 448         }
 449         if ((cp = getenv("USER"))) {
 450                 FINDCOMP(cptr, "user");
 451                 if (cptr)
 452                         cptr->c_text = getcpy(cp);
 453         }
 454         if (!ccme)
 455                 ismymbox(NULL);
 456
 457         /*
 458         ** pick any interesting stuff out of msg "inb"
 459         */
 460         for (state = FLD;;) {
 461                 state = m_getfld(state, name, tmpbuf, SBUFSIZ, inb);
 462                 switch (state) {
 463                 case FLD:
 464                 case FLDPLUS:
 465                         /*
 466                         ** if we're interested in this component, save
 467                         ** a pointer to the component text, then start
 468                         ** using our next free buffer as the component
 469                         ** temp buffer (buffer switching saves an extra
 470                         ** copy of the component text).
 471                         */
 472                         if ((cptr = wantcomp[CHASH(name)]))
 473                                 do {
 474                                         if (!mh_strcasecmp(name, cptr->c_name)) {
 475                                                 char_read += msg_count;
 476                                                 if (! cptr->c_text) {
 477                                                         i = strlen(cptr->c_text = tmpbuf) - 1;
 478                                                         if (tmpbuf[i] == '\n')
 479                                                                 tmpbuf[i] = '\0';
 480                                                         *--savecomp = cptr;
 481                                                         tmpbuf = *nxtbuf++;
 482                                                 } else {
 483                                                         i = strlen(cp = cptr->c_text) - 1;
 484                                                         if (cp[i] == '\n') {
 485                                                                 if (cptr->c_type & CT_ADDR) {
 486                                                                         cp[i] = '\0';
 487                                                                         cp = add(",\n\t", cp);
 488                                                                 } else {
 489                                                                         cp = add("\t", cp);
 490                                                                 }
 491                                                         }
 492                                                         cptr->c_text = add(tmpbuf, cp);
 493                                                 }
 494                                                 while (state == FLDPLUS) {
 495                                                         state = m_getfld(state, name, tmpbuf,
 496                                                                                           SBUFSIZ, inb);
 497                                                         cptr->c_text = add(tmpbuf, cptr->c_text);
 498                                                         char_read += msg_count;
 499                                                 }
 500                                                 break;
 501                                         }
 502                                 } while ((cptr = cptr->c_next));
 503
 504                         while (state == FLDPLUS)
 505                                 state = m_getfld(state, name, tmpbuf,
 506                                                 SBUFSIZ, inb);
 507                         break;
 508
 509                 case LENERR:
 510                 case FMTERR:
 511                 case BODY:
 512                 case FILEEOF:
 513                         goto finished;
 514
 515                 default:
 516                         adios(EX_SOFTWARE, NULL, "m_getfld() returned %d", state);
 517                 }
 518         }
 519
 520         /*
 521         ** format and output the header lines.
 522         */
 523 finished:
 524
 525         /*
 526         ** if there's a "Subject" component, strip any "Re:"s off it
 527         */
 528         FINDCOMP(cptr, "subject")
 529         if (cptr && (cp = cptr->c_text)) {
 530                 char *sp = cp;
 531
 532                 for (;;) {
 533                         while (isspace(*cp))
 534                                 cp++;
 535                         if(uprf(cp, "re:"))
 536                                 cp += 3;
 537                         else
 538                                 break;
 539                         sp = cp;
 540                 }
 541                 if (sp != cptr->c_text) {
 542                         cp = cptr->c_text;
 543                         cptr->c_text = getcpy(sp);
 544                         free(cp);
 545                 }
 546         }
 547         i = format_len + char_read + 256;
 548         scanl = mh_xmalloc((size_t) i + 2);
 549         dat[0] = 0;
 550         dat[1] = 0;
 551         dat[2] = 0;
 552         dat[3] = OUTPUTLINELEN;
 553         dat[4] = 0;
 554         fmt_scan(fmt, scanl, i, dat);
 555         fputs(scanl, out);
 556         if (badaddrs) {
 557                 fputs("\nrepl: bad addresses:\n", out);
 558                 fputs( badaddrs, out);
 559         }
 560
 561         /* Check if we should filter the message */
 562         if (filter) {
 563                 fflush(out);
 564                 if (ferror(out))
 565                         adios(EX_IOERR, drft, "error writing");
 566
 567                 replfilter(inb, out, filter);
 568         }
 569
 570         fflush(out);
 571         if (ferror(out))
 572                 adios(EX_IOERR, drft, "error writing");
 573         fclose(out);
 574
 575         if (mime && mp) {
 576                 /* add an attachment header */
 577                 char buffer[BUFSIZ];
 578
 579                 snprintf(buffer, sizeof buffer, "+%s %s",
 580                                 mp->foldpath, m_name(mp->lowsel));
 581                 if (execprogl("anno", "anno", "-append", "-nodate",
 582                                 drft, "-comp", attach_hdr, "-text", buffer,
 583                                 (char *)NULL) != 0) {
 584                         advise(NULL, "unable to add attachment header");
 585                 }
 586         }
 587
 588         /* return dynamically allocated buffers */
 589         free(scanl);
 590         for (nxtbuf = compbuffers, i = ncomps; (cptr = *savecomp++);
 591                         nxtbuf++, i--)
 592                 free(cptr->c_text);  /* if not nxtbuf, nxtbuf already freed */
 593         while ( i-- > 0)
 594                 free(*nxtbuf++);  /* free unused nxtbufs */
 595         free((char *) compbuffers);
 596         free((char *) used_buf);
 597 }
 598
 599 static char *buf;  /* our current working buffer */
 600 static char *bufend;  /* end of working buffer */
 601 static char *last_dst;  /* buf ptr at end of last call */
 602 static unsigned int bufsiz=0;  /* current size of buf */
 603
 604 #define BUFINCR 512  /* how much to expand buf when if fills */
 605
 606 #define CPY(s) { cp = (s); while ((*dst++ = *cp++)) ; --dst; }
 607
 608 /*
 609 ** check if there's enough room in buf for str.
 610 ** add more mem if needed
 611 */
 612 #define CHECKMEM(str) \
 613         if ((len = strlen(str)) >= bufend - dst) {\
 614                 int i = dst - buf;\
 615                 int n = last_dst - buf;\
 616                 bufsiz += ((dst + len - bufend) / BUFINCR + 1) * BUFINCR;\
 617                 buf = mh_xrealloc(buf, bufsiz);\
 618                 dst = buf + i;\
 619                 last_dst = buf + n;\
 620                 bufend = buf + bufsiz;\
 621         }
 622
 623
 624 /*
 625 ** fmt_scan will call this routine if the user includes the function
 626 ** "(formataddr {component})" in a format string.  "orig" is the
 627 ** original contents of the string register.  "str" is the address
 628 ** string to be formatted and concatenated onto orig.  This routine
 629 ** returns a pointer to the concatenated address string.
 630 **
 631 ** We try to not do a lot of malloc/copy/free's (which is why we
 632 ** don't call "getcpy") but still place no upper limit on the
 633 ** length of the result string.
 634 **
 635 ** This routine is an override for the equally named one in sbr/fmt_addr.c.
 636 ** Don't delete it!
 637 */
 638 char *
 639 formataddr(char *orig, char *str)
 640 {
 641         int len;
 642         char baddr[BUFSIZ], error[BUFSIZ];
 643         int isgroup;
 644         char *dst;
 645         char *cp;
 646         char *sp;
 647         struct mailname *mp = NULL;
 648
 649         /* if we don't have a buffer yet, get one */
 650         if (bufsiz == 0) {
 651                 buf = mh_xmalloc(BUFINCR);
 652                 last_dst = buf;  /* XXX */
 653                 bufsiz = BUFINCR - 6;  /* leave some slop */
 654                 bufend = buf + bufsiz;
 655         }
 656         /*
 657         ** If "orig" points to our buffer we can just pick up where we
 658         ** left off.  Otherwise we have to copy orig into our buffer.
 659         */
 660         if (orig == buf)
 661                 dst = last_dst;
 662         else if (!orig || !*orig) {
 663                 dst = buf;
 664                 *dst = '\0';
 665         } else {
 666                 dst = last_dst;  /* XXX */
 667                 CHECKMEM(orig);
 668                 CPY(orig);
 669         }
 670
 671         /* concatenate all the new addresses onto 'buf' */
 672         for (isgroup = 0; (cp = getname(str)); ) {
 673                 if ((mp = getm(cp, dfhost, dftype, AD_NAME, error)) == NULL) {
 674                         snprintf(baddr, sizeof(baddr), "\t%s -- %s\n",
 675                                         cp, error);
 676                         badaddrs = add(baddr, badaddrs);
 677                         continue;
 678                 }
 679                 if (isgroup && (mp->m_gname || !mp->m_ingrp)) {
 680                         *dst++ = ';';
 681                         isgroup = 0;
 682                 }
 683                 if (insert(mp)) {
 684                         /* if we get here we're going to add an address */
 685                         if (dst != buf) {
 686                                 *dst++ = ',';
 687                                 *dst++ = ' ';
 688                         }
 689                         if (mp->m_gname) {
 690                                 CHECKMEM(mp->m_gname);
 691                                 CPY(mp->m_gname);
 692                                 isgroup++;
 693                         }
 694                         sp = adrformat(mp);
 695                         CHECKMEM(sp);
 696                         CPY(sp);
 697                 }
 698         }
 699
 700         if (isgroup)
 701                 *dst++ = ';';
 702
 703         *dst = '\0';
 704         last_dst = dst;
 705         return (buf);
 706 }
 707
 708
 709 static int
 710 insert(struct mailname *np)
 711 {
 712         char buffer[BUFSIZ];
 713         struct mailname *mp;
 714
 715         if (np->m_mbox == NULL)
 716                 return 0;
 717
 718         for (mp = &mq; mp->m_next; mp = mp->m_next) {
 719                 if (!mh_strcasecmp(np->m_host, mp->m_next->m_host) &&
 720                                 !mh_strcasecmp(np->m_mbox, mp->m_next->m_mbox))
 721                         return 0;
 722         }
 723         if (!ccme && ismymbox(np))
 724                 return 0;
 725
 726         if (querysw) {
 727                 snprintf(buffer, sizeof(buffer), "Reply to %s? ",
 728                                 adrformat(np));
 729                 if (!gans(buffer, anoyes))
 730                         return 0;
 731         }
 732         mp->m_next = np;
 733         return 1;
 734 }
 735
 736
 737 /*
 738 ** Call mhl
 739 **
 740 ** This function expects that argument out has been fflushed by the caller.
 741 */
 742 static void
 743 replfilter(FILE *in, FILE *out, char *filter)
 744 {
 745         int pid, n;
 746         char *errstr;
 747
 748         if (filter == NULL)
 749                 return;
 750
 751         if (access(filter, R_OK) == NOTOK)
 752                 adios(EX_IOERR, filter, "unable to read");
 753
 754         rewind(in);
 755         lseek(fileno(in), (off_t) 0, SEEK_SET);
 756
 757         switch (pid = fork()) {
 758         case NOTOK:
 759                 adios(EX_OSERR, "fork", "unable to");
 760
 761         case OK:
 762                 dup2(fileno(in), fileno(stdin));
 763                 dup2(fileno(out), fileno(stdout));
 764                 for (n=3; n<OPEN_MAX; n++) {
 765                         close(n);
 766                 }
 767
 768                 execlp("mhl", "mhl", "-form", filter, NULL);
 769                 errstr = strerror(errno);
 770                 write(2, "unable to exec mhl: ", 20);
 771                 write(2, errstr, strlen(errstr));
 772                 write(2, "\n", 1);
 773                 _exit(EX_OSERR);
 774
 775         default:
 776                 if (pidXwait(pid, "mhl"))
 777                         exit(EX_SOFTWARE);
 778                 fseek(out, 0L, SEEK_END);
 779                 break;
 780         }
 781 }