cmd-resend.c

   1 /*@ S-nail - a mail user agent derived from Berkeley Mail.
   2  *@ All sorts of `reply', `resend', `forward', and similar user commands.
   3  *
   4  * Copyright (c) 2000-2004 Gunnar Ritter, Freiburg i. Br., Germany.
   5  * Copyright (c) 2012 - 2018 Steffen (Daode) Nurpmeso <steffen@sdaoden.eu>.
   6  */
   7 /*
   8  * Copyright (c) 1980, 1993
   9  *      The Regents of the University of California.  All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35 #undef n_FILE
  36 #define n_FILE cmd_resend
  37
  38 #ifndef HAVE_AMALGAMATION
  39 # include "nail.h"
  40 #endif
  41
  42 /* Modify subject we reply to to begin with Re: if it does not already */
  43 static char *a_crese_reedit(char const *subj);
  44
  45 /* Fetch these headers, as appropriate */
  46 static struct name *a_crese_reply_to(struct message *mp);
  47 static struct name *a_crese_mail_followup_to(struct message *mp);
  48
  49 /* We honoured Reply-To: and/or Mail-Followup-To:, but *recipients-in-cc* is
  50  * set so try to keep "secondary" addressees in Cc:, if possible, */
  51 static void a_crese_polite_rt_mft_move(struct message *mp, struct header *hp,
  52                      struct name *np);
  53
  54 /* References and charset, as appropriate */
  55 static void a_crese_make_ref_and_cs(struct message *mp, struct header *head);
  56
  57 /* `reply' and `Lreply' workhorse */
  58 static int a_crese_list_reply(int *msgvec, enum header_flags hf);
  59
  60 /* Get PTF to implementation of command c (i.e., take care for *flipr*) */
  61 static int (*a_crese_reply_or_Reply(char c))(int *, bool_t);
  62
  63 /* Reply to a single message.  Extract each name from the message header and
  64  * send them off to mail1() */
  65 static int a_crese_reply(int *msgvec, bool_t recipient_record);
  66
  67 /* Reply to a series of messages by simply mailing to the senders and not
  68  * messing around with the To: and Cc: lists as in normal reply */
  69 static int a_crese_Reply(int *msgvec, bool_t recipient_record);
  70
  71 /* Forward a message to a new recipient, in the sense of RFC 2822 */
  72 static int a_crese_fwd(char *str, int recipient_record);
  73
  74 /* Modify the subject we are replying to to begin with Fwd: */
  75 static char *a_crese__fwdedit(char *subj);
  76
  77 /* Do the real work of resending */
  78 static int a_crese_resend1(void *v, bool_t add_resent);
  79
  80 static char *
  81 a_crese_reedit(char const *subj){
  82    char *newsubj;
  83    NYD2_ENTER;
  84
  85    newsubj = NULL;
  86
  87    if(subj != NULL && *subj != '\0'){
  88       struct str in, out;
  89       size_t i;
  90       char const *cp;
  91
  92       in.l = strlen(in.s = n_UNCONST(subj));
  93       mime_fromhdr(&in, &out, TD_ISPR | TD_ICONV);
  94
  95       i = strlen(cp = subject_re_trim(out.s)) +1;
  96       /* RFC mandates english "Re: " */
  97       newsubj = n_autorec_alloc(sizeof("Re: ") -1 + i);
  98       memcpy(newsubj, "Re: ", sizeof("Re: ") -1);
  99       memcpy(&newsubj[sizeof("Re: ") -1], cp, i);
 100
 101       free(out.s);
 102    }
 103    NYD2_LEAVE;
 104    return newsubj;
 105 }
 106
 107 static struct name *
 108 a_crese_reply_to(struct message *mp){
 109    char const *cp, *cp2;
 110    struct name *rt, *np;
 111    enum gfield gf;
 112    NYD2_ENTER;
 113
 114    gf = ok_blook(fullnames) ? GFULL | GSKIN : GSKIN;
 115    rt = NULL;
 116
 117    if((cp = ok_vlook(reply_to_honour)) != NULL &&
 118          (cp2 = hfield1("reply-to", mp)) != NULL &&
 119          (rt = checkaddrs(lextract(cp2, GTO | gf), EACM_STRICT, NULL)) != NULL){
 120       char *sp;
 121       size_t l;
 122       char const *tr;
 123
 124       if((n_psonce & n_PSO_INTERACTIVE) && !(n_pstate & n_PS_ROBOT)){
 125          fprintf(n_stdout, _("Reply-To: header contains:"));
 126          for(np = rt; np != NULL; np = np->n_flink)
 127             fprintf(n_stdout, " %s", np->n_name);
 128          putc('\n', n_stdout);
 129       }
 130
 131       tr = _("Reply-To %s%s");
 132       l = strlen(tr) + strlen(rt->n_name) + 3 +1;
 133       sp = n_lofi_alloc(l);
 134
 135       snprintf(sp, l, tr, rt->n_name, (rt->n_flink != NULL ? "..." : n_empty));
 136       if(n_quadify(cp, UIZ_MAX, sp, TRU1) <= FAL0)
 137          rt = NULL;
 138
 139       n_lofi_free(sp);
 140    }
 141    NYD2_LEAVE;
 142    return rt;
 143 }
 144
 145 static struct name *
 146 a_crese_mail_followup_to(struct message *mp){
 147    char const *cp, *cp2;
 148    struct name *mft, *np;
 149    enum gfield gf;
 150    NYD2_ENTER;
 151
 152    gf = ok_blook(fullnames) ? GFULL | GSKIN : GSKIN;
 153    mft = NULL;
 154
 155    if((cp = ok_vlook(followup_to_honour)) != NULL &&
 156          (cp2 = hfield1("mail-followup-to", mp)) != NULL &&
 157          (mft = checkaddrs(lextract(cp2, GTO | gf), EACM_STRICT,NULL)) != NULL){
 158       char *sp;
 159       size_t l;
 160       char const *tr;
 161
 162       if((n_psonce & n_PSO_INTERACTIVE) && !(n_pstate & n_PS_ROBOT)){
 163          fprintf(n_stdout, _("Mail-Followup-To: header contains:"));
 164          for(np = mft; np != NULL; np = np->n_flink)
 165             fprintf(n_stdout, " %s", np->n_name);
 166          putc('\n', n_stdout);
 167       }
 168
 169       tr = _("Followup-To %s%s");
 170       l = strlen(tr) + strlen(mft->n_name) + 3 +1;
 171       sp = n_lofi_alloc(l);
 172
 173       snprintf(sp, l, tr, mft->n_name,
 174          (mft->n_flink != NULL ? "..." : n_empty));
 175       if(n_quadify(cp, UIZ_MAX, sp, TRU1) <= FAL0)
 176          mft = NULL;
 177
 178       n_lofi_free(sp);
 179    }
 180    NYD2_LEAVE;
 181    return mft;
 182 }
 183
 184 static void
 185 a_crese_polite_rt_mft_move(struct message *mp, struct header *hp,
 186       struct name *np){
 187    bool_t once;
 188    NYD2_ENTER;
 189    n_UNUSED(mp);
 190
 191    if(np == hp->h_to)
 192       hp->h_to = NULL;
 193    if(np == hp->h_cc)
 194       hp->h_cc = NULL;
 195
 196    /* We may find that in the end To: is empty but Cc: is not, in which case we
 197     * upgrade Cc: to To:, and jump back and redo the thing slightly different */
 198    once = FAL0;
 199 jredo:
 200    while(np != NULL){
 201       enum gfield gf;
 202       struct name *nnp, **xpp, *xp;
 203
 204       nnp = np;
 205       np = np->n_flink;
 206
 207       if(once){
 208          gf = GTO;
 209          xpp = &hp->h_to;
 210       }else{
 211          gf = GCC;
 212          xpp = &hp->h_cc;
 213       }
 214
 215       /* Try primary, then secondary */
 216       for(xp = hp->h_mailx_orig_to; xp != NULL; xp = xp->n_flink)
 217          if(!asccasecmp(xp->n_name, nnp->n_name))
 218             goto jlink;
 219
 220       if(once){
 221          gf = GCC;
 222          xpp = &hp->h_cc;
 223       }
 224
 225       for(xp = hp->h_mailx_orig_cc; xp != NULL; xp = xp->n_flink)
 226          if(!asccasecmp(xp->n_name, nnp->n_name))
 227             goto jlink;
 228
 229       /* If this receiver came in only via R-T: or M-F-T:, place her/him/it in
 230        * To: due to lack of a better place */
 231       gf = GTO;
 232       xpp = &hp->h_to;
 233 jlink:
 234       /* Link it at the end to not loose original sort order */
 235       if((xp = *xpp) != NULL)
 236          while(xp->n_flink != NULL)
 237             xp = xp->n_flink;
 238
 239       if((nnp->n_blink = xp) != NULL)
 240          xp->n_flink = nnp;
 241       else
 242          *xpp = nnp;
 243       nnp->n_flink = NULL;
 244       nnp->n_type = (nnp->n_type & ~GMASK) | gf;
 245    }
 246
 247    /* If afterwards only Cc: data remains, upgrade all of it to To: */
 248    if(hp->h_to == NULL){
 249       np = hp->h_cc;
 250       hp->h_cc = NULL;
 251       if(!once){
 252          hp->h_to = NULL;
 253          once = TRU1;
 254          goto jredo;
 255       }else
 256          for(hp->h_to = np; np != NULL; np = np->n_flink)
 257             np->n_type = (np->n_type & ~GMASK) | GTO;
 258    }
 259    NYD2_LEAVE;
 260 }
 261
 262 static void
 263 a_crese_make_ref_and_cs(struct message *mp, struct header *head) /* TODO ASAP */
 264 {
 265    char const *ccp;
 266    char *oldref, *oldmsgid, *newref;
 267    size_t oldreflen = 0, oldmsgidlen = 0, reflen;
 268    unsigned i;
 269    struct name *n;
 270    NYD2_ENTER;
 271
 272    oldref = hfield1("references", mp);
 273    oldmsgid = hfield1("message-id", mp);
 274    if (oldmsgid == NULL || *oldmsgid == '\0') {
 275       head->h_ref = NULL;
 276       goto jleave;
 277    }
 278
 279    reflen = 1;
 280    if (oldref) {
 281       oldreflen = strlen(oldref);
 282       reflen += oldreflen + 2;
 283    }
 284    if (oldmsgid) {
 285       oldmsgidlen = strlen(oldmsgid);
 286       reflen += oldmsgidlen;
 287    }
 288
 289    newref = smalloc(reflen);
 290    if (oldref != NULL) {
 291       memcpy(newref, oldref, oldreflen +1);
 292       if (oldmsgid != NULL) {
 293          newref[oldreflen++] = ',';
 294          newref[oldreflen++] = ' ';
 295          memcpy(newref + oldreflen, oldmsgid, oldmsgidlen +1);
 296       }
 297    } else if (oldmsgid)
 298       memcpy(newref, oldmsgid, oldmsgidlen +1);
 299    n = extract(newref, GREF);
 300    free(newref);
 301
 302    /* Limit number of references TODO better on parser side */
 303    while (n->n_flink != NULL)
 304       n = n->n_flink;
 305    for (i = 1; i <= REFERENCES_MAX; ++i) {
 306       if (n->n_blink != NULL)
 307          n = n->n_blink;
 308       else
 309          break;
 310    }
 311    n->n_blink = NULL;
 312    head->h_ref = n;
 313    if (ok_blook(reply_in_same_charset) &&
 314          (ccp = hfield1("content-type", mp)) != NULL){
 315       if((head->h_charset = ccp = mime_param_get("charset", ccp)) != NULL){
 316          if((ccp = n_iconv_normalize_name(ccp)) != NULL)
 317             ccp = n_charsetalias_expand(ccp);
 318          head->h_charset = ccp;
 319       }
 320    }
 321 jleave:
 322    NYD2_LEAVE;
 323 }
 324
 325 static int
 326 a_crese_list_reply(int *msgvec, enum header_flags hf){
 327    struct header head;
 328    struct message *mp;
 329    char const *cp, *cp2;
 330    enum gfield gf;
 331    struct name *rt, *mft, *np;
 332    int *save_msgvec;
 333    NYD2_ENTER;
 334
 335    n_pstate_err_no = n_ERR_NONE;
 336
 337    /* TODO Since we may recur and do stuff with message lists we need to save
 338     * TODO away the argument vector as long as that isn't done by machinery */
 339    /* C99 */{
 340       size_t i;
 341       for(i = 0; msgvec[i] != 0; ++i)
 342          ;
 343       ++i;
 344       save_msgvec = n_lofi_alloc(sizeof(*save_msgvec) * i);
 345       while(i-- > 0)
 346          save_msgvec[i] = msgvec[i];
 347       msgvec = save_msgvec;
 348    }
 349
 350    gf = ok_blook(fullnames) ? GFULL | GSKIN : GSKIN;
 351
 352 jwork_msg:
 353    n_autorec_relax_create();
 354    mp = &message[*msgvec - 1];
 355    touch(mp);
 356    setdot(mp);
 357
 358    memset(&head, 0, sizeof head);
 359    head.h_flags = hf;
 360    head.h_subject = a_crese_reedit(hfield1("subject", mp));
 361    head.h_mailx_command = (hf & HF_LIST_REPLY) ? "Lreply" : "reply";
 362    head.h_mailx_orig_from = lextract(hfield1("from", mp), GIDENT | gf);
 363    head.h_mailx_orig_to = lextract(hfield1("to", mp), GTO | gf);
 364    head.h_mailx_orig_cc = lextract(hfield1("cc", mp), GCC | gf);
 365    head.h_mailx_orig_bcc = lextract(hfield1("bcc", mp), GBCC | gf);
 366
 367    /* First of all check for Reply-To: then Mail-Followup-To:, because these,
 368     * if honoured, take precedence over anything else.  We will join the
 369     * resulting list together if so desired.
 370     * So if we shall honour R-T: or M-F-T:, then these are our receivers! */
 371    rt = a_crese_reply_to(mp);
 372    mft = a_crese_mail_followup_to(mp);
 373
 374    if(rt != NULL || mft != NULL){
 375       np = cat(rt, mft);
 376       if(mft != NULL)
 377          head.h_mft = namelist_dup(np, GTO | gf); /* xxx GTO: no "clone"! */
 378
 379       /* Optionally do not propagate a receiver that originally was in
 380        * secondary Cc: to the primary To: list */
 381       if(ok_blook(recipients_in_cc)){
 382          a_crese_polite_rt_mft_move(mp, &head, np);
 383
 384          head.h_mailx_raw_cc = namelist_dup(head.h_cc, GCC | gf);
 385          head.h_cc = n_alternates_remove(head.h_cc, FAL0);
 386       }else
 387          head.h_to = np;
 388
 389       head.h_mailx_raw_to = namelist_dup(head.h_to, GTO | gf);
 390       head.h_to = n_alternates_remove(head.h_to, FAL0);
 391 #ifdef HAVE_DEVEL
 392       for(np = head.h_to; np != NULL; np = np->n_flink)
 393          assert((np->n_type & GMASK) == GTO);
 394       for(np = head.h_cc; np != NULL; np = np->n_flink)
 395          assert((np->n_type & GMASK) == GCC);
 396 #endif
 397       goto jrecipients_done;
 398    }
 399
 400    /* Otherwise do the normal From: / To: / Cc: dance */
 401
 402    if((cp2 = hfield1("from", mp)) == NULL)
 403       cp2 = nameof(mp, 1);
 404
 405    /* Cc: */
 406    np = NULL;
 407    if(ok_blook(recipients_in_cc) && (cp = hfield1("to", mp)) != NULL)
 408       np = lextract(cp, GCC | gf);
 409    if((cp = hfield1("cc", mp)) != NULL){
 410       struct name *x;
 411
 412       if((x = lextract(cp, GCC | gf)) != NULL)
 413          np = cat(np, x);
 414    }
 415    if(np != NULL){
 416       head.h_mailx_raw_cc = namelist_dup(np, GCC | gf);
 417       head.h_cc = n_alternates_remove(np, FAL0);
 418    }
 419
 420    /* To: */
 421    np = NULL;
 422    if(cp2 != NULL)
 423       np = lextract(cp2, GTO | gf);
 424    if(!ok_blook(recipients_in_cc) && (cp = hfield1("to", mp)) != NULL){
 425       struct name *x;
 426
 427       if((x = lextract(cp, GTO | gf)) != NULL)
 428          np = cat(np, x);
 429    }
 430    /* Delete my name from reply list, and with it, all my alternate names */
 431    if(np != NULL){
 432       head.h_mailx_raw_to = namelist_dup(np, GTO | gf);
 433       np = n_alternates_remove(np, FAL0);
 434       /* The user may have send this to himself, don't ignore that */
 435       if(count(np) == 0){
 436          np = lextract(cp2, GTO | gf);
 437          head.h_mailx_raw_to = namelist_dup(np, GTO | gf);
 438       }
 439    }
 440    head.h_to = np;
 441
 442 jrecipients_done:
 443
 444    /* For list replies we want to automatically recognize the list address
 445     * given in the List-Post: header, so that we will not throw away a possible
 446     * corresponding receiver: temporarily "`mlist' the List-Post: address" */
 447    if((hf & HF_LIST_REPLY) && (cp = hfield1("list-post", mp)) != NULL){
 448       struct name *x;
 449
 450       if((x = lextract(cp, GEXTRA | GSKIN)) == NULL || x->n_flink != NULL ||
 451             (cp = url_mailto_to_address(x->n_name)) == NULL ||
 452             /* XXX terribly wasteful to create a new name, and can't we find
 453              * XXX a way to mitigate that?? */
 454             is_addr_invalid(x = nalloc(cp, GEXTRA | GSKIN), EACM_STRICT)){
 455          if(n_poption & n_PO_D_V)
 456             n_err(_("Message contains invalid List-Post: header\n"));
 457       }else{
 458          /* A special case has been seen on e.g. ietf-announce@ietf.org:
 459           * these usually post to multiple groups, with ietf-announce@
 460           * in List-Post:, but with Reply-To: set to ietf@ietf.org (since
 461           * -announce@ is only used for announcements, say).
 462           * So our desire is to honour this request and actively overwrite
 463           * List-Post: for our purpose; but only if its a single address.
 464           * However, to avoid ambiguities with users that place themselve in
 465           * Reply-To: and mailing lists which don't overwrite this (or only
 466           * extend this, shall such exist), only do so if reply_to exists of
 467           * a single address which points to the same domain as List-Post: */
 468          if(rt != NULL && rt->n_flink == NULL &&
 469                name_is_same_domain(x, rt))
 470             cp = rt->n_name; /* rt is EACM_STRICT tested */
 471          else
 472             cp = x->n_name;
 473
 474          /* XXX is_mlist_mp()?? */
 475          if(is_mlist(cp, FAL0) == MLIST_OTHER)
 476             head.h_list_post = cp;
 477       }
 478    }
 479
 480    /* In case of list replies we actively sort out any non-list recipient */
 481    if(hf & HF_LIST_REPLY){
 482       struct name **nhpp, *nhp, *tail;
 483
 484       cp = head.h_list_post;
 485
 486       nhp = *(nhpp = &head.h_to);
 487       head.h_to = NULL;
 488 j_lt_redo:
 489       for(tail = NULL; nhp != NULL;){
 490          np = nhp;
 491          nhp = nhp->n_flink;
 492
 493          /* XXX is_mlist_mp()?? */
 494          if((cp != NULL && !asccasecmp(cp, np->n_name)) ||
 495                is_mlist(np->n_name, FAL0) != MLIST_OTHER){
 496             if((np->n_blink = tail) != NULL)
 497                tail->n_flink = np;
 498             else
 499                *nhpp = np;
 500             np->n_flink = NULL;
 501             tail = np;
 502          }
 503       }
 504       if(nhpp == &head.h_to){
 505          nhp = *(nhpp = &head.h_cc);
 506          head.h_cc = NULL;
 507          goto j_lt_redo;
 508       }
 509
 510       /* For `Lreply' only, fail immediately with DESTADDRREQ if there are no
 511        * receivers at all! */
 512       if(head.h_to == NULL && head.h_cc == NULL){
 513          n_err(_("No recipients specified for `Lreply'\n"));
 514          if(msgvec[1] == 0){
 515             n_pstate_err_no = n_ERR_DESTADDRREQ;
 516             msgvec = NULL;
 517             goto jleave;
 518          }
 519          goto jskip_to_next;
 520       }
 521    }
 522
 523    /* Move Cc: to To: as appropriate! */
 524    if(head.h_to == NULL && (np = head.h_cc) != NULL){
 525       head.h_cc = NULL;
 526       for(head.h_to = np; np != NULL; np = np->n_flink)
 527          np->n_type = (np->n_type & ~GMASK) | GTO;
 528    }
 529
 530    a_crese_make_ref_and_cs(mp, &head);
 531
 532    if(ok_blook(quote_as_attachment)){
 533       head.h_attach = csalloc(1, sizeof *head.h_attach);
 534       head.h_attach->a_msgno = *msgvec;
 535       head.h_attach->a_content_description = _("Original message content");
 536    }
 537
 538    if(mail1(&head, 1, mp, NULL, !!(hf & HF_RECIPIENT_RECORD), 0) != OKAY){
 539       msgvec = NULL;
 540       goto jleave;
 541    }
 542    if(ok_blook(markanswered) && !(mp->m_flag & MANSWERED))
 543       mp->m_flag |= MANSWER | MANSWERED;
 544    n_autorec_relax_gut();
 545
 546 jskip_to_next:
 547    if(*++msgvec != 0){
 548       /* TODO message (error) ring.., less sleep */
 549       if(n_psonce & n_PSO_INTERACTIVE){
 550          fprintf(n_stdout,
 551             _("Waiting a second before proceeding to the next message..\n"));
 552          fflush(n_stdout);
 553          n_msleep(1000, FAL0);
 554       }
 555       goto jwork_msg;
 556    }
 557
 558 jleave:
 559    n_lofi_free(save_msgvec);
 560    NYD2_LEAVE;
 561    return (msgvec == NULL);
 562 }
 563
 564 static int
 565 (*a_crese_reply_or_Reply(char c))(int *, bool_t){
 566    int (*rv)(int*, bool_t);
 567    NYD2_ENTER;
 568
 569    rv = (ok_blook(flipr) ^ (c == 'R')) ? &a_crese_Reply : &a_crese_reply;
 570    NYD2_LEAVE;
 571    return rv;
 572 }
 573
 574 static int
 575 a_crese_reply(int *msgvec, bool_t recipient_record){
 576    int rv;
 577    NYD2_ENTER;
 578
 579    rv = a_crese_list_reply(msgvec,
 580          (recipient_record ? HF_RECIPIENT_RECORD : HF_NONE));
 581    NYD2_LEAVE;
 582    return rv;
 583 }
 584
 585 static int
 586 a_crese_Reply(int *msgvec, bool_t recipient_record){
 587    struct header head;
 588    struct message *mp;
 589    int *ap;
 590    enum gfield gf;
 591    NYD2_ENTER;
 592
 593    memset(&head, 0, sizeof head);
 594    gf = ok_blook(fullnames) ? GFULL | GSKIN : GSKIN;
 595
 596    for(ap = msgvec; *ap != 0; ++ap){
 597       struct name *np;
 598
 599       mp = &message[*ap - 1];
 600       touch(mp);
 601       setdot(mp);
 602
 603       if((np = a_crese_reply_to(mp)) == NULL){
 604          char *cp;
 605
 606          if((cp = hfield1("from", mp)) == NULL)
 607             cp = nameof(mp, 2);
 608          np = lextract(cp, GTO | gf);
 609       }
 610       head.h_to = cat(head.h_to, np);
 611    }
 612
 613    mp = &message[msgvec[0] - 1];
 614    head.h_subject = hfield1("subject", mp);
 615    head.h_subject = a_crese_reedit(head.h_subject);
 616    a_crese_make_ref_and_cs(mp, &head);
 617    head.h_mailx_command = "Reply";
 618    head.h_mailx_orig_from = lextract(hfield1("from", mp), GIDENT | gf);
 619    head.h_mailx_orig_to = lextract(hfield1("to", mp), GTO | gf);
 620    head.h_mailx_orig_cc = lextract(hfield1("cc", mp), GCC | gf);
 621    head.h_mailx_orig_bcc = lextract(hfield1("bcc", mp), GBCC | gf);
 622
 623    if(ok_blook(recipients_in_cc)){
 624       a_crese_polite_rt_mft_move(mp, &head, head.h_to);
 625
 626       head.h_mailx_raw_cc = namelist_dup(head.h_cc, GCC | gf);
 627       head.h_cc = n_alternates_remove(head.h_cc, FAL0);
 628    }
 629    head.h_mailx_raw_to = namelist_dup(head.h_to, GTO | gf);
 630    head.h_to = n_alternates_remove(head.h_to, FAL0);
 631
 632    if(ok_blook(quote_as_attachment)){
 633       head.h_attach = csalloc(1, sizeof *head.h_attach);
 634       head.h_attach->a_msgno = *msgvec;
 635       head.h_attach->a_content_description = _("Original message content");
 636    }
 637
 638    if(mail1(&head, 1, mp, NULL, recipient_record, 0) != OKAY){
 639       msgvec = NULL;
 640       goto jleave;
 641    }
 642
 643    if(ok_blook(markanswered) && !(mp->m_flag & MANSWERED))
 644       mp->m_flag |= MANSWER | MANSWERED;
 645 jleave:
 646    NYD2_LEAVE;
 647    return (msgvec == NULL);
 648 }
 649
 650 static int
 651 a_crese_fwd(char *str, int recipient_record){
 652    struct header head;
 653    struct message *mp;
 654    enum gfield gf;
 655    bool_t f, forward_as_attachment;
 656    char *recipient;
 657    int rv, *msgvec;
 658    NYD2_ENTER;
 659
 660    rv = 1;
 661
 662    if((recipient = laststring(str, &f, TRU1)) == NULL){
 663       n_err(_("No recipient specified.\n"));
 664       n_pstate_err_no = n_ERR_DESTADDRREQ;
 665       goto jleave;
 666    }
 667
 668    forward_as_attachment = ok_blook(forward_as_attachment);
 669    gf = ok_blook(fullnames) ? GFULL | GSKIN : GSKIN;
 670    msgvec = n_autorec_alloc((msgCount + 2) * sizeof *msgvec);
 671
 672    n_pstate_err_no = n_ERR_NODATA;
 673    if(!f){
 674       *msgvec = first(0, MMNORM);
 675       if(*msgvec != 0)
 676          msgvec[1] = 0;
 677    }else if(getmsglist(str, msgvec, 0) < 0)
 678       goto jleave;
 679
 680    if(*msgvec == 0){
 681       n_err(_("No applicable messages.\n"));
 682       goto jleave;
 683    }
 684    if(msgvec[1] != 0){
 685       n_err(_("Cannot forward multiple messages at once\n"));
 686       n_pstate_err_no = n_ERR_NOTSUP;
 687       goto jleave;
 688    }
 689
 690    memset(&head, 0, sizeof head);
 691    head.h_to = lextract(recipient,
 692          (GTO | (ok_blook(fullnames) ? GFULL : GSKIN)));
 693
 694    mp = &message[*msgvec - 1];
 695    touch(mp);
 696    setdot(mp);
 697    head.h_subject = hfield1("subject", mp);
 698    head.h_subject = a_crese__fwdedit(head.h_subject);
 699    head.h_mailx_command = "forward";
 700    head.h_mailx_raw_to = namelist_dup(head.h_to, GTO | gf);
 701    head.h_mailx_orig_from = lextract(hfield1("from", mp), GIDENT | gf);
 702    head.h_mailx_orig_to = lextract(hfield1("to", mp), GTO | gf);
 703    head.h_mailx_orig_cc = lextract(hfield1("cc", mp), GCC | gf);
 704    head.h_mailx_orig_bcc = lextract(hfield1("bcc", mp), GBCC | gf);
 705
 706    if(forward_as_attachment){
 707       head.h_attach = csalloc(1, sizeof *head.h_attach);
 708       head.h_attach->a_msgno = *msgvec;
 709       head.h_attach->a_content_description = _("Forwarded message");
 710    }
 711
 712    rv = (mail1(&head, 1, (forward_as_attachment ? NULL : mp), NULL,
 713          recipient_record, 1) != OKAY); /* reverse! */
 714 jleave:
 715    NYD2_LEAVE;
 716    return rv;
 717 }
 718
 719 static char *
 720 a_crese__fwdedit(char *subj){
 721    struct str in, out;
 722    char *newsubj;
 723    NYD2_ENTER;
 724
 725    newsubj = NULL;
 726
 727    if(subj == NULL || *subj == '\0')
 728       goto jleave;
 729
 730    in.s = subj;
 731    in.l = strlen(subj);
 732    mime_fromhdr(&in, &out, TD_ISPR | TD_ICONV);
 733
 734    newsubj = n_autorec_alloc(out.l + 6);
 735    if(!ascncasecmp(out.s, "Fwd: ", sizeof("Fwd: ") -1)) /* TODO EXTEND SUPP.. */
 736       memcpy(newsubj, out.s, out.l +1);
 737    else{
 738       memcpy(newsubj, "Fwd: ", 5); /* TODO ..a la subject_re_trim()! */
 739       memcpy(&newsubj[5], out.s, out.l +1);
 740    }
 741
 742    free(out.s);
 743 jleave:
 744    NYD2_LEAVE;
 745    return newsubj;
 746 }
 747
 748 static int
 749 a_crese_resend1(void *vp, bool_t add_resent){
 750    struct header head;
 751    struct name *myto, *myrawto;
 752    enum gfield gf;
 753    char *name, *str;
 754    int *ip, *msgvec;
 755    bool_t fail;
 756    NYD2_ENTER;
 757
 758    fail = TRU1;
 759
 760    str = vp;
 761    msgvec = n_autorec_alloc((msgCount + 2) * sizeof *msgvec);
 762    name = laststring(str, &fail, TRU1);
 763    if(name == NULL){
 764       n_err(_("No recipient specified.\n"));
 765       n_pstate_err_no = n_ERR_DESTADDRREQ;
 766       goto jleave;
 767    }
 768
 769    n_pstate_err_no = n_ERR_NODATA;
 770
 771    if(!fail){
 772       *msgvec = first(0, MMNORM);
 773       if(*msgvec != 0)
 774          msgvec[1] = 0;
 775    }else if(getmsglist(str, msgvec, 0) < 0)
 776       goto jleave;
 777
 778    if(*msgvec == 0){
 779       n_err(_("No applicable messages.\n"));
 780       goto jleave;
 781    }
 782
 783    fail = TRU1;
 784    gf = ok_blook(fullnames) ? GFULL | GSKIN : GSKIN;
 785
 786    myrawto = nalloc(name, GTO | gf);
 787    myto = usermap(namelist_dup(myrawto, myrawto->n_type), FAL0);
 788    myto = n_alternates_remove(myto, TRU1);
 789    if(myto == NULL){
 790       n_pstate_err_no = n_ERR_DESTADDRREQ;
 791       goto jleave;
 792    }
 793
 794    n_autorec_relax_create();
 795    for(ip = msgvec; *ip != 0 && UICMP(z, PTR2SIZE(ip - msgvec), <, msgCount);
 796          ++ip){
 797       struct message *mp;
 798
 799       mp = &message[*ip - 1];
 800       touch(mp);
 801       setdot(mp);
 802
 803       memset(&head, 0, sizeof head);
 804       head.h_to = myto;
 805       head.h_mailx_command = "resend";
 806       head.h_mailx_raw_to = myrawto;
 807       head.h_mailx_orig_from = lextract(hfield1("from", mp), GIDENT | gf);
 808       head.h_mailx_orig_to = lextract(hfield1("to", mp), GTO | gf);
 809       head.h_mailx_orig_cc = lextract(hfield1("cc", mp), GCC | gf);
 810       head.h_mailx_orig_bcc = lextract(hfield1("bcc", mp), GBCC | gf);
 811
 812       if(resend_msg(mp, &head, add_resent) != OKAY){
 813          /* n_autorec_relax_gut(); XXX but is handled automatically? */
 814          goto jleave;
 815       }
 816       n_autorec_relax_unroll();
 817    }
 818    n_autorec_relax_gut();
 819
 820    fail = FAL0;
 821    n_pstate_err_no = n_ERR_NONE;
 822 jleave:
 823    NYD2_LEAVE;
 824    return (fail != FAL0);
 825 }
 826
 827 FL int
 828 c_reply(void *vp){
 829    int rv;
 830    NYD_ENTER;
 831
 832    rv = (*a_crese_reply_or_Reply('r'))(vp, FAL0);
 833    NYD_LEAVE;
 834    return rv;
 835 }
 836
 837 FL int
 838 c_replyall(void *vp){
 839    int rv;
 840    NYD_ENTER;
 841
 842    rv = a_crese_reply(vp, FAL0);
 843    NYD_LEAVE;
 844    return rv;
 845 }
 846
 847 FL int
 848 c_replysender(void *vp){
 849    int rv;
 850    NYD_ENTER;
 851
 852    rv = a_crese_Reply(vp, FAL0);
 853    NYD_LEAVE;
 854    return rv;
 855 }
 856
 857 FL int
 858 c_Reply(void *vp){
 859    int rv;
 860    NYD_ENTER;
 861
 862    rv = (*a_crese_reply_or_Reply('R'))(vp, FAL0);
 863    NYD_LEAVE;
 864    return rv;
 865 }
 866
 867 FL int
 868 c_Lreply(void *vp){
 869    int rv;
 870    NYD_ENTER;
 871
 872    rv = a_crese_list_reply(vp, HF_LIST_REPLY);
 873    NYD_LEAVE;
 874    return rv;
 875 }
 876
 877 FL int
 878 c_followup(void *vp){
 879    int rv;
 880    NYD_ENTER;
 881
 882    rv = (*a_crese_reply_or_Reply('r'))(vp, TRU1);
 883    NYD_LEAVE;
 884    return rv;
 885 }
 886
 887 FL int
 888 c_followupall(void *vp){
 889    int rv;
 890    NYD_ENTER;
 891
 892    rv = a_crese_reply(vp, TRU1);
 893    NYD_LEAVE;
 894    return rv;
 895 }
 896
 897 FL int
 898 c_followupsender(void *vp){
 899    int rv;
 900    NYD_ENTER;
 901
 902    rv = a_crese_Reply(vp, TRU1);
 903    NYD_LEAVE;
 904    return rv;
 905 }
 906
 907 FL int
 908 c_Followup(void *vp){
 909    int rv;
 910    NYD_ENTER;
 911
 912    rv = (*a_crese_reply_or_Reply('R'))(vp, TRU1);
 913    NYD_LEAVE;
 914    return rv;
 915 }
 916
 917 FL int
 918 c_forward(void *vp){
 919    int rv;
 920    NYD_ENTER;
 921
 922    rv = a_crese_fwd(vp, 0);
 923    NYD_LEAVE;
 924    return rv;
 925 }
 926
 927 FL int
 928 c_Forward(void *vp){
 929    int rv;
 930    NYD_ENTER;
 931
 932    rv = a_crese_fwd(vp, 1);
 933    NYD_LEAVE;
 934    return rv;
 935 }
 936
 937 FL int
 938 c_resend(void *vp){
 939    int rv;
 940    NYD_ENTER;
 941
 942    rv = a_crese_resend1(vp, TRU1);
 943    NYD_LEAVE;
 944    return rv;
 945 }
 946
 947 FL int
 948 c_Resend(void *vp){
 949    int rv;
 950    NYD_ENTER;
 951
 952    rv = a_crese_resend1(vp, FAL0);
 953    NYD_LEAVE;
 954    return rv;
 955 }
 956
 957 /* s-it-mode */