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
  16
  17 static struct swit switches[] = {
  18 #define GROUPSW  0
  19         { "group", 0 },
  20 #define NGROUPSW  1
  21         { "nogroup", 0 },
  22 #define ANNOSW  2
  23         { "annotate", 0 },
  24 #define NANNOSW  3
  25         { "noannotate", 0 },
  26 #define CCSW  4
  27         { "cc all|to|cc|me", 0 },
  28 #define NCCSW  5
  29         { "nocc type", 0 },
  30 #define EDITRSW  6
  31         { "editor editor", 0 },
  32 #define NEDITSW  7
  33         { "noedit", 0 },
  34 #define FILTSW  8
  35         { "filter filterfile", 0 },
  36 #define NFILTSW  9
  37         { "nofilter", 0 },
  38 #define FORMSW  10
  39         { "form formfile", 0 },
  40 #define MIMESW  11
  41         { "mime", 0 },
  42 #define NMIMESW  12
  43         { "nomime", 0 },
  44 #define QURYSW  13
  45         { "query", 0 },
  46 #define NQURYSW  14
  47         { "noquery", 0 },
  48 #define WHATSW  15
  49         { "whatnowproc program", 0 },
  50 #define NWHATSW  16
  51         { "nowhatnowproc", 0 },
  52 #define VERSIONSW  17
  53         { "version", 0 },
  54 #define HELPSW  18
  55         { "help", 0 },
  56 #define FILESW  19
  57         { "file file", 4 },  /* interface from msh */
  58
  59 #ifdef MHE
  60 #define BILDSW  20
  61         { "build", 5 },  /* interface from mhe */
  62 #endif
  63
  64         { NULL, 0 }
  65 };
  66
  67 static struct swit ccswitches[] = {
  68 #define CTOSW  0
  69         { "to", 0 },
  70 #define CCCSW  1
  71         { "cc", 0 },
  72 #define CMESW  2
  73         { "me", 0 },
  74 #define CALSW  3
  75         { "all", 0 },
  76         { NULL, 0 }
  77 };
  78
  79 /*
  80 ** Buffer size for content part of header fields.
  81 ** We want this to be large enough so that we don't
  82 ** do a lot of extra FLDPLUS calls on m_getfld but
  83 ** small enough so that we don't snarf the entire
  84 ** message body when we're not going to use any of it.
  85 */
  86 #define SBUFSIZ 256
  87
  88 static short ccto = -1;
  89 static short cccc = -1;
  90 static short ccme = -1;
  91 static short querysw = 0;
  92
  93 static short groupreply = 0;  /* Is this a group reply? */
  94
  95 static int mime = 0;  /* include original as MIME part */
  96 static char *form   = NULL;  /* form (components) file */
  97 static char *filter = NULL;  /* message filter file */
  98
  99 static int dftype=0;
 100
 101 static char *badaddrs = NULL;
 102 static char *dfhost = NULL;
 103
 104 static struct mailname mq = { NULL };
 105
 106 static struct format *fmt;
 107
 108 static int ncomps = 0;  /* # of interesting components */
 109 static char **compbuffers = NULL;  /* buffers for component text */
 110 static struct comp **used_buf = NULL;  /* stack for comp that use buffers */
 111
 112 static int dat[5];  /* aux. data for format routine */
 113
 114 static char *addrcomps[] = {
 115         "from",
 116         "sender",
 117         "reply-to",
 118         "to",
 119         "cc",
 120         "bcc",
 121         "resent-from",
 122         "resent-sender",
 123         "resent-reply-to",
 124         "resent-to",
 125         "resent-cc",
 126         "resent-bcc",
 127         NULL
 128 };
 129
 130 /*
 131 ** static prototypes
 132 */
 133 static void docc(char *, int);
 134 static int insert(struct mailname *);
 135 static void replfilter(FILE *, FILE *, char *);
 136 static void replout(FILE *, char *, char *, struct msgs *, int,
 137                 char *, char *);
 138
 139
 140 int
 141 main(int argc, char **argv)
 142 {
 143         int anot = 0;
 144         int nedit = 0, nwhat = 0;
 145         char *cp, *cwd, *maildir, *file = NULL;
 146         char *folder = NULL, *msg = NULL;
 147         char *ed = NULL, drft[BUFSIZ], buf[BUFSIZ];
 148         char **argp, **arguments;
 149         struct msgs *mp = NULL;
 150         FILE *in;
 151
 152 #ifdef MHE
 153         int buildsw = 0;
 154 #endif /* MHE */
 155
 156         filter = getcpy(etcpath(mhlreply));
 157
 158 #ifdef LOCALE
 159         setlocale(LC_ALL, "");
 160 #endif
 161         invo_name = mhbasename(argv[0]);
 162
 163         /* read user profile/context */
 164         context_read();
 165
 166         arguments = getarguments(invo_name, argc, argv, 1);
 167         argp = arguments;
 168
 169         while ((cp = *argp++)) {
 170                 if (*cp == '-') {
 171                         switch (smatch(++cp, switches)) {
 172                         case AMBIGSW:
 173                                 ambigsw(cp, switches);
 174                                 done(1);
 175                         case UNKWNSW:
 176                                 adios(NULL, "-%s unknown", cp);
 177
 178                         case HELPSW:
 179                                 snprintf(buf, sizeof(buf), "%s: [+folder] [msg] [switches]", invo_name);
 180                                 print_help(buf, switches, 1);
 181                                 done(0);
 182                         case VERSIONSW:
 183                                 print_version(invo_name);
 184                                 done(1);
 185
 186                         case GROUPSW:
 187                                 groupreply++;
 188                                 continue;
 189                         case NGROUPSW:
 190                                 groupreply = 0;
 191                                 continue;
 192
 193                         case ANNOSW:
 194                                 anot++;
 195                                 continue;
 196                         case NANNOSW:
 197                                 anot = 0;
 198                                 continue;
 199
 200                         case CCSW:
 201                                 if (!(cp = *argp++) || *cp == '-')
 202                                         adios(NULL, "missing argument to %s",
 203                                                         argp[-2]);
 204                                 docc(cp, 1);
 205                                 continue;
 206                         case NCCSW:
 207                                 if (!(cp = *argp++) || *cp == '-')
 208                                         adios(NULL, "missing argument to %s",
 209                                                         argp[-2]);
 210                                 docc(cp, 0);
 211                                 continue;
 212
 213                         case EDITRSW:
 214                                 if (!(ed = *argp++) || *ed == '-')
 215                                         adios(NULL, "missing argument to %s",
 216                                                         argp[-2]);
 217                                 nedit = 0;
 218                                 continue;
 219                         case NEDITSW:
 220                                 nedit++;
 221                                 continue;
 222
 223                         case WHATSW:
 224                                 if (!(whatnowproc = *argp++) ||
 225                                                 *whatnowproc == '-')
 226                                         adios(NULL, "missing argument to %s",
 227                                                         argp[-2]);
 228                                 nwhat = 0;
 229                                 continue;
 230 #ifdef MHE
 231                         case BILDSW:
 232                                 buildsw++;  /* fall... */
 233 #endif /* MHE */
 234                         case NWHATSW:
 235                                 nwhat++;
 236                                 continue;
 237
 238                         case FILESW:
 239                                 if (file)
 240                                         adios(NULL, "only one file at a time!");
 241                                 if (!(cp = *argp++) || *cp == '-')
 242                                         adios(NULL, "missing argument to %s",
 243                                                         argp[-2]);
 244                                 file = getcpy(expanddir(cp));
 245                                 continue;
 246                         case FORMSW:
 247                                 if (!(form = *argp++) || *form == '-')
 248                                         adios(NULL, "missing argument to %s",
 249                                                         argp[-2]);
 250                                 continue;
 251
 252                         case FILTSW:
 253                                 if (!(cp = *argp++) || *cp == '-')
 254                                         adios(NULL, "missing argument to %s",
 255                                                         argp[-2]);
 256                                 filter = getcpy(etcpath(cp));
 257                                 continue;
 258                         case NFILTSW:
 259                                 filter = NULL;
 260                                 continue;
 261
 262                         case MIMESW:
 263                                 mime++;
 264                                 continue;
 265                         case NMIMESW:
 266                                 mime = 0;
 267                                 continue;
 268
 269                         case QURYSW:
 270                                 querysw++;
 271                                 continue;
 272                         case NQURYSW:
 273                                 querysw = 0;
 274                                 continue;
 275
 276                         }
 277                 }
 278                 if (*cp == '+' || *cp == '@') {
 279                         if (folder)
 280                                 adios(NULL, "only one folder at a time!");
 281                         else
 282                                 folder = getcpy(expandfol(cp));
 283                 } else {
 284                         if (msg)
 285                                 adios(NULL, "only one message at a time!");
 286                         else
 287                                 msg = cp;
 288                 }
 289         }
 290
 291         if (ccto == -1)
 292                 ccto = groupreply;
 293         if (cccc == -1)
 294                 cccc = groupreply;
 295         if (ccme == -1)
 296                 ccme = groupreply;
 297
 298         cwd = getcpy(pwd());
 299
 300         if (file && (msg || folder))
 301                 adios(NULL, "can't mix files and folders/msgs");
 302
 303 #ifdef MHE
 304         strncpy(drft, buildsw ? toabsdir("reply")
 305                 : m_draft(seq_beyond), sizeof(drft));
 306 #else
 307         strncpy(drft, m_draft(seq_beyond), sizeof(drft));
 308 #endif /* MHE */
 309
 310         if (file) {
 311                 /*
 312                 ** We are replying to a file.
 313                 */
 314                 anot = 0;  /* we don't want to annotate a file */
 315         } else {
 316                 /*
 317                 ** We are replying to a message.
 318                 */
 319                 if (!msg)
 320                         msg = seq_cur;
 321                 if (!folder)
 322                         folder = getcurfol();
 323                 maildir = toabsdir(folder);
 324
 325                 if (chdir(maildir) == NOTOK)
 326                         adios(maildir, "unable to change directory to");
 327
 328                 /* read folder and create message structure */
 329                 if (!(mp = folder_read(folder)))
 330                         adios(NULL, "unable to read folder %s", folder);
 331
 332                 /* check for empty folder */
 333                 if (mp->nummsg == 0)
 334                         adios(NULL, "no messages in %s", folder);
 335
 336                 /* parse the message range/sequence/name and set SELECTED */
 337                 if (!m_convert(mp, msg))
 338                         done(1);
 339                 seq_setprev(mp);  /* set the previous-sequence */
 340
 341                 if (mp->numsel > 1)
 342                         adios(NULL, "only one message at a time!");
 343
 344                 context_replace(curfolder, folder); /* update current folder */
 345                 seq_setcur(mp, mp->lowsel);  /* update current message  */
 346                 seq_save(mp);  /* synchronize sequences   */
 347                 context_save();  /* save the context file   */
 348         }
 349
 350         msg = file ? file : getcpy(m_name(mp->lowsel));
 351
 352         if ((in = fopen(msg, "r")) == NULL)
 353                 adios(msg, "unable to open");
 354
 355         /* find form (components) file */
 356         if (!form) {
 357                 if (groupreply)
 358                         form = etcpath(replgroupcomps);
 359                 else
 360                         form = etcpath(replcomps);
 361         }
 362
 363         replout(in, msg, drft, mp, mime, form, filter);
 364         fclose(in);
 365
 366         if (nwhat)
 367                 done(0);
 368         what_now(ed, nedit, NOUSE, drft, msg, 0, mp, anot ? "Replied" : NULL,
 369                         cwd);
 370         done(1);
 371         return 1;
 372 }
 373
 374 static void
 375 docc(char *cp, int ccflag)
 376 {
 377         switch (smatch(cp, ccswitches)) {
 378         case AMBIGSW:
 379                 ambigsw(cp, ccswitches);
 380                 done(1);
 381         case UNKWNSW:
 382                 adios(NULL, "-%scc %s unknown", ccflag ? "" : "no", cp);
 383
 384         case CTOSW:
 385                 ccto = ccflag;
 386                 break;
 387
 388         case CCCSW:
 389                 cccc = ccflag;
 390                 break;
 391
 392         case CMESW:
 393                 ccme = ccflag;
 394                 break;
 395
 396         case CALSW:
 397                 ccto = cccc = ccme = ccflag;
 398                 break;
 399         }
 400 }
 401
 402
 403
 404
 405 static void
 406 replout(FILE *inb, char *msg, char *drft, struct msgs *mp,
 407         int mime, char *form, char *filter)
 408 {
 409         register int state, i;
 410         register struct comp *cptr;
 411         register char *tmpbuf;
 412         register char **nxtbuf;
 413         register char **ap;
 414         register struct comp **savecomp;
 415         int char_read = 0, format_len, mask;
 416         char name[NAMESZ], *scanl;
 417         unsigned char *cp;
 418         FILE *out;
 419
 420         mask = umask(~m_gmprot());
 421         if ((out = fopen(drft, "w")) == NULL)
 422                 adios(drft, "unable to create");
 423
 424         umask(mask);
 425
 426         /* get new format string */
 427         cp = new_fs(form, NULL);
 428         format_len = strlen(cp);
 429
 430         /* compile format string */
 431         ncomps = fmt_compile(cp, &fmt) + 1;
 432
 433         if (!(nxtbuf = compbuffers = (char **)
 434                         calloc((size_t) ncomps, sizeof(char *))))
 435                 adios(NULL, "unable to allocate component buffers");
 436         if (!(savecomp = used_buf = (struct comp **)
 437                         calloc((size_t) (ncomps+1), sizeof(struct comp *))))
 438                 adios(NULL, "unable to allocate component buffer stack");
 439         savecomp += ncomps + 1;
 440         *--savecomp = NULL;  /* point at zero'd end minus 1 */
 441
 442         for (i = ncomps; i--; )
 443                 *nxtbuf++ = mh_xmalloc(SBUFSIZ);
 444
 445         nxtbuf = compbuffers;  /* point at start */
 446         tmpbuf = *nxtbuf++;
 447
 448         for (ap = addrcomps; *ap; ap++) {
 449                 FINDCOMP(cptr, *ap);
 450                 if (cptr)
 451                         cptr->c_type |= CT_ADDR;
 452         }
 453
 454         /*
 455         ** ignore any components killed by command line switches
 456         */
 457         if (!ccto) {
 458                 FINDCOMP(cptr, "to");
 459                 if (cptr)
 460                         cptr->c_name = "";
 461         }
 462         if (!cccc) {
 463                 FINDCOMP(cptr, "cc");
 464                 if (cptr)
 465                         cptr->c_name = "";
 466         }
 467         if ((cp = getenv("USER"))) {
 468                 FINDCOMP(cptr, "user");
 469                 if (cptr)
 470                         cptr->c_text = getcpy(cp);
 471         }
 472         if (!ccme)
 473                 ismymbox(NULL);
 474
 475         /*
 476         ** pick any interesting stuff out of msg "inb"
 477         */
 478         for (state = FLD;;) {
 479                 state = m_getfld(state, name, tmpbuf, SBUFSIZ, inb);
 480                 switch (state) {
 481                 case FLD:
 482                 case FLDPLUS:
 483                         /*
 484                         ** if we're interested in this component, save
 485                         ** a pointer to the component text, then start
 486                         ** using our next free buffer as the component
 487                         ** temp buffer (buffer switching saves an extra
 488                         ** copy of the component text).
 489                         */
 490                         if ((cptr = wantcomp[CHASH(name)]))
 491                                 do {
 492                                         if (!mh_strcasecmp(name, cptr->c_name)) {
 493                                                 char_read += msg_count;
 494                                                 if (! cptr->c_text) {
 495                                                         i = strlen(cptr->c_text = tmpbuf) - 1;
 496                                                         if (tmpbuf[i] == '\n')
 497                                                                 tmpbuf[i] = '\0';
 498                                                         *--savecomp = cptr;
 499                                                         tmpbuf = *nxtbuf++;
 500                                                 } else {
 501                                                         i = strlen(cp = cptr->c_text) - 1;
 502                                                         if (cp[i] == '\n') {
 503                                                                 if (cptr->c_type & CT_ADDR) {
 504                                                                         cp[i] = '\0';
 505                                                                         cp = add(",\n\t", cp);
 506                                                                 } else {
 507                                                                         cp = add("\t", cp);
 508                                                                 }
 509                                                         }
 510                                                         cptr->c_text = add(tmpbuf, cp);
 511                                                 }
 512                                                 while (state == FLDPLUS) {
 513                                                         state = m_getfld(state, name, tmpbuf,
 514                                                                                           SBUFSIZ, inb);
 515                                                         cptr->c_text = add(tmpbuf, cptr->c_text);
 516                                                         char_read += msg_count;
 517                                                 }
 518                                                 break;
 519                                         }
 520                                 } while ((cptr = cptr->c_next));
 521
 522                         while (state == FLDPLUS)
 523                                 state = m_getfld(state, name, tmpbuf,
 524                                                 SBUFSIZ, inb);
 525                         break;
 526
 527                 case LENERR:
 528                 case FMTERR:
 529                 case BODY:
 530                 case FILEEOF:
 531                         goto finished;
 532
 533                 default:
 534                         adios(NULL, "m_getfld() returned %d", state);
 535                 }
 536         }
 537
 538         /*
 539         ** format and output the header lines.
 540         */
 541 finished:
 542
 543         /*
 544         ** if there's a "Subject" component, strip any "Re:"s off it
 545         */
 546         FINDCOMP(cptr, "subject")
 547         if (cptr && (cp = cptr->c_text)) {
 548                 register char *sp = cp;
 549
 550                 for (;;) {
 551                         while (isspace(*cp))
 552                                 cp++;
 553                         if(uprf(cp, "re:"))
 554                                 cp += 3;
 555                         else
 556                                 break;
 557                         sp = cp;
 558                 }
 559                 if (sp != cptr->c_text) {
 560                         cp = cptr->c_text;
 561                         cptr->c_text = getcpy(sp);
 562                         free(cp);
 563                 }
 564         }
 565         i = format_len + char_read + 256;
 566         scanl = mh_xmalloc((size_t) i + 2);
 567         dat[0] = 0;
 568         dat[1] = 0;
 569         dat[2] = 0;
 570         dat[3] = OUTPUTLINELEN;
 571         dat[4] = 0;
 572         fmt_scan(fmt, scanl, i, dat);
 573         fputs(scanl, out);
 574         if (badaddrs) {
 575                 fputs("\nrepl: bad addresses:\n", out);
 576                 fputs( badaddrs, out);
 577         }
 578
 579         /* Check if we should filter the message */
 580         if (filter) {
 581                 fflush(out);
 582                 if (ferror(out))
 583                         adios(drft, "error writing");
 584
 585                 replfilter(inb, out, filter);
 586         }
 587
 588         fflush(out);
 589         if (ferror(out))
 590                 adios(drft, "error writing");
 591         fclose(out);
 592
 593         if (mime && mp) {
 594                 /* add an attachment header */
 595                 char buffer[BUFSIZ];
 596
 597                 snprintf(buffer, sizeof buffer, "anno -append -nodate '%s' "
 598                                 "-comp '%s' -text '+%s %s'",
 599                                 drft,
 600                                 attach_hdr, mp->foldpath, m_name(mp->lowsel));
 601                 if (system(buffer) != 0) {
 602                         advise(NULL, "unable to add attachment header");
 603                 }
 604         }
 605
 606         /* return dynamically allocated buffers */
 607         free(scanl);
 608         for (nxtbuf = compbuffers, i = ncomps; (cptr = *savecomp++);
 609                         nxtbuf++, i--)
 610                 free(cptr->c_text);  /* if not nxtbuf, nxtbuf already freed */
 611         while ( i-- > 0)
 612                 free(*nxtbuf++);  /* free unused nxtbufs */
 613         free((char *) compbuffers);
 614         free((char *) used_buf);
 615 }
 616
 617 static char *buf;  /* our current working buffer */
 618 static char *bufend;  /* end of working buffer */
 619 static char *last_dst;  /* buf ptr at end of last call */
 620 static unsigned int bufsiz=0;  /* current size of buf */
 621
 622 #define BUFINCR 512  /* how much to expand buf when if fills */
 623
 624 #define CPY(s) { cp = (s); while ((*dst++ = *cp++)) ; --dst; }
 625
 626 /*
 627 ** check if there's enough room in buf for str.
 628 ** add more mem if needed
 629 */
 630 #define CHECKMEM(str) \
 631         if ((len = strlen(str)) >= bufend - dst) {\
 632                 int i = dst - buf;\
 633                 int n = last_dst - buf;\
 634                 bufsiz += ((dst + len - bufend) / BUFINCR + 1) * BUFINCR;\
 635                 buf = mh_xrealloc(buf, bufsiz);\
 636                 dst = buf + i;\
 637                 last_dst = buf + n;\
 638                 bufend = buf + bufsiz;\
 639         }
 640
 641
 642 /*
 643 ** fmt_scan will call this routine if the user includes the function
 644 ** "(formataddr {component})" in a format string.  "orig" is the
 645 ** original contents of the string register.  "str" is the address
 646 ** string to be formatted and concatenated onto orig.  This routine
 647 ** returns a pointer to the concatenated address string.
 648 **
 649 ** We try to not do a lot of malloc/copy/free's (which is why we
 650 ** don't call "getcpy") but still place no upper limit on the
 651 ** length of the result string.
 652 **
 653 ** This routine is an override for the equally named one in sbr/fmt_addr.c.
 654 ** Don't delete it!
 655 */
 656 char *
 657 formataddr(char *orig, char *str)
 658 {
 659         register int len;
 660         char baddr[BUFSIZ], error[BUFSIZ];
 661         register int isgroup;
 662         register char *dst;
 663         register char *cp;
 664         register char *sp;
 665         register struct mailname *mp = NULL;
 666
 667         /* if we don't have a buffer yet, get one */
 668         if (bufsiz == 0) {
 669                 buf = mh_xmalloc(BUFINCR);
 670                 last_dst = buf;  /* XXX */
 671                 bufsiz = BUFINCR - 6;  /* leave some slop */
 672                 bufend = buf + bufsiz;
 673         }
 674         /*
 675         ** If "orig" points to our buffer we can just pick up where we
 676         ** left off.  Otherwise we have to copy orig into our buffer.
 677         */
 678         if (orig == buf)
 679                 dst = last_dst;
 680         else if (!orig || !*orig) {
 681                 dst = buf;
 682                 *dst = '\0';
 683         } else {
 684                 dst = last_dst;  /* XXX */
 685                 CHECKMEM(orig);
 686                 CPY(orig);
 687         }
 688
 689         /* concatenate all the new addresses onto 'buf' */
 690         for (isgroup = 0; (cp = getname(str)); ) {
 691                 if ((mp = getm(cp, dfhost, dftype, AD_NAME, error)) == NULL) {
 692                         snprintf(baddr, sizeof(baddr), "\t%s -- %s\n",
 693                                         cp, error);
 694                         badaddrs = add(baddr, badaddrs);
 695                         continue;
 696                 }
 697                 if (isgroup && (mp->m_gname || !mp->m_ingrp)) {
 698                         *dst++ = ';';
 699                         isgroup = 0;
 700                 }
 701                 if (insert(mp)) {
 702                         /* if we get here we're going to add an address */
 703                         if (dst != buf) {
 704                                 *dst++ = ',';
 705                                 *dst++ = ' ';
 706                         }
 707                         if (mp->m_gname) {
 708                                 CHECKMEM(mp->m_gname);
 709                                 CPY(mp->m_gname);
 710                                 isgroup++;
 711                         }
 712                         sp = adrformat(mp);
 713                         CHECKMEM(sp);
 714                         CPY(sp);
 715                 }
 716         }
 717
 718         if (isgroup)
 719                 *dst++ = ';';
 720
 721         *dst = '\0';
 722         last_dst = dst;
 723         return (buf);
 724 }
 725
 726
 727 static int
 728 insert(struct mailname *np)
 729 {
 730         char buffer[BUFSIZ];
 731         register struct mailname *mp;
 732
 733         if (np->m_mbox == NULL)
 734                 return 0;
 735
 736         for (mp = &mq; mp->m_next; mp = mp->m_next) {
 737                 if (!mh_strcasecmp(np->m_host, mp->m_next->m_host) &&
 738                                 !mh_strcasecmp(np->m_mbox, mp->m_next->m_mbox))
 739                         return 0;
 740         }
 741         if (!ccme && ismymbox(np))
 742                 return 0;
 743
 744         if (querysw) {
 745                 snprintf(buffer, sizeof(buffer), "Reply to %s? ",
 746                                 adrformat(np));
 747                 if (!gans(buffer, anoyes))
 748                         return 0;
 749         }
 750         mp->m_next = np;
 751         return 1;
 752 }
 753
 754
 755 /*
 756 ** Call mhl
 757 **
 758 ** This function expects that argument out has been fflushed by the caller.
 759 */
 760 static void
 761 replfilter(FILE *in, FILE *out, char *filter)
 762 {
 763         int pid, n;
 764         char *errstr;
 765
 766         if (filter == NULL)
 767                 return;
 768
 769         if (access(filter, R_OK) == NOTOK)
 770                 adios(filter, "unable to read");
 771
 772         rewind(in);
 773         lseek(fileno(in), (off_t) 0, SEEK_SET);
 774
 775         switch (pid = fork()) {
 776         case NOTOK:
 777                 adios("fork", "unable to");
 778
 779         case OK:
 780                 dup2(fileno(in), fileno(stdin));
 781                 dup2(fileno(out), fileno(stdout));
 782                 for (n=3; n<OPEN_MAX; n++) {
 783                         close(n);
 784                 }
 785
 786                 execlp("mhl", "mhl", "-form", filter, NULL);
 787                 errstr = strerror(errno);
 788                 write(2, "unable to exec mhl: ", 20);
 789                 write(2, errstr, strlen(errstr));
 790                 write(2, "\n", 1);
 791                 _exit(-1);
 792
 793         default:
 794                 if (pidXwait(pid, "mhl"))
 795                         done(1);
 796                 fseek(out, 0L, SEEK_END);
 797                 break;
 798         }
 799 }