cmd3.c

   1 /*@ S-nail - a mail user agent derived from Berkeley Mail.
   2  *@ Still more user commands.
   3  *
   4  * Copyright (c) 2000-2004 Gunnar Ritter, Freiburg i. Br., Germany.
   5  * Copyright (c) 2012 - 2016 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 cmd3
  37
  38 #ifndef HAVE_AMALGAMATION
  39 # include "nail.h"
  40 #endif
  41
  42 static char                *_bang_buf;
  43 static size_t              _bang_size;
  44
  45 /* Modify subject we reply to to begin with Re: if it does not already */
  46 static char *     _reedit(char *subj);
  47
  48 /* Expand the shell escape by expanding unescaped !'s into the last issued
  49  * command where possible */
  50 static void       _bangexp(char **str, size_t *size);
  51
  52 static void       make_ref_and_cs(struct message *mp, struct header *head);
  53
  54 /* `reply' and `Lreply' workhorse */
  55 static int        _list_reply(int *msgvec, enum header_flags hf);
  56
  57 /* Get PTF to implementation of command c (i.e., take care for *flipr*) */
  58 static int (*     _reply_or_Reply(char c))(int *, bool_t);
  59
  60 /* Reply to a single message.  Extract each name from the message header and
  61  * send them off to mail1() */
  62 static int        _reply(int *msgvec, bool_t recipient_record);
  63
  64 /* Reply to a series of messages by simply mailing to the senders and not
  65  * messing around with the To: and Cc: lists as in normal reply */
  66 static int        _Reply(int *msgvec, bool_t recipient_record);
  67
  68 /* Forward a message to a new recipient, in the sense of RFC 2822 */
  69 static int        _fwd(char *str, int recipient_record);
  70
  71 /* Modify the subject we are replying to to begin with Fwd: */
  72 static char *     __fwdedit(char *subj);
  73
  74 /* Do the real work of resending */
  75 static int        _resend1(void *v, bool_t add_resent);
  76
  77 /* c_file, c_File */
  78 static int        _c_file(void *v, enum fedit_mode fm);
  79
  80 static char *
  81 _reedit(char *subj)
  82 {
  83    struct str in, out;
  84    char *newsubj = NULL;
  85    NYD_ENTER;
  86
  87    if (subj == NULL || *subj == '\0')
  88       goto jleave;
  89
  90    in.s = subj;
  91    in.l = strlen(subj);
  92    mime_fromhdr(&in, &out, TD_ISPR | TD_ICONV);
  93
  94    if ((newsubj = subject_re_trim(out.s)) != out.s)
  95       newsubj = savestr(out.s);
  96    else {
  97       /* RFC mandates english "Re: " */
  98       newsubj = salloc(out.l + 4 +1);
  99       sstpcpy(sstpcpy(newsubj, "Re: "), out.s);
 100    }
 101
 102    free(out.s);
 103 jleave:
 104    NYD_LEAVE;
 105    return newsubj;
 106 }
 107
 108 static void
 109 _bangexp(char **str, size_t *size)
 110 {
 111    char *bangbuf;
 112    int changed = 0;
 113    bool_t dobang;
 114    size_t sz, i, j, bangbufsize;
 115    NYD_ENTER;
 116
 117    dobang = ok_blook(bang);
 118
 119    bangbuf = smalloc(bangbufsize = *size);
 120    i = j = 0;
 121    while ((*str)[i]) {
 122       if (dobang) {
 123          if ((*str)[i] == '!') {
 124             sz = strlen(_bang_buf);
 125             bangbuf = srealloc(bangbuf, bangbufsize += sz);
 126             ++changed;
 127             memcpy(bangbuf + j, _bang_buf, sz + 1);
 128             j += sz;
 129             i++;
 130             continue;
 131          }
 132       }
 133       if ((*str)[i] == '\\' && (*str)[i + 1] == '!') {
 134          bangbuf[j++] = '!';
 135          i += 2;
 136          ++changed;
 137       }
 138       bangbuf[j++] = (*str)[i++];
 139    }
 140    bangbuf[j] = '\0';
 141    if (changed) {
 142       printf("!%s\n", bangbuf);
 143       fflush(stdout);
 144    }
 145    sz = j + 1;
 146    if (sz > *size)
 147       *str = srealloc(*str, *size = sz);
 148    memcpy(*str, bangbuf, sz);
 149    if (sz > _bang_size)
 150       _bang_buf = srealloc(_bang_buf, _bang_size = sz);
 151    memcpy(_bang_buf, bangbuf, sz);
 152    free(bangbuf);
 153    NYD_LEAVE;
 154 }
 155
 156 static void
 157 make_ref_and_cs(struct message *mp, struct header *head) /* TODO rewrite FAST */
 158 {
 159    char *oldref, *oldmsgid, *newref, *cp;
 160    size_t oldreflen = 0, oldmsgidlen = 0, reflen;
 161    unsigned i;
 162    struct name *n;
 163    NYD_ENTER;
 164
 165    oldref = hfield1("references", mp);
 166    oldmsgid = hfield1("message-id", mp);
 167    if (oldmsgid == NULL || *oldmsgid == '\0') {
 168       head->h_ref = NULL;
 169       goto jleave;
 170    }
 171
 172    reflen = 1;
 173    if (oldref) {
 174       oldreflen = strlen(oldref);
 175       reflen += oldreflen + 2;
 176    }
 177    if (oldmsgid) {
 178       oldmsgidlen = strlen(oldmsgid);
 179       reflen += oldmsgidlen;
 180    }
 181
 182    newref = smalloc(reflen);
 183    if (oldref != NULL) {
 184       memcpy(newref, oldref, oldreflen +1);
 185       if (oldmsgid != NULL) {
 186          newref[oldreflen++] = ',';
 187          newref[oldreflen++] = ' ';
 188          memcpy(newref + oldreflen, oldmsgid, oldmsgidlen +1);
 189       }
 190    } else if (oldmsgid)
 191       memcpy(newref, oldmsgid, oldmsgidlen +1);
 192    n = extract(newref, GREF);
 193    free(newref);
 194
 195    /* Limit number of references TODO better on parser side */
 196    while (n->n_flink != NULL)
 197       n = n->n_flink;
 198    for (i = 1; i <= REFERENCES_MAX; ++i) {
 199       if (n->n_blink != NULL)
 200          n = n->n_blink;
 201       else
 202          break;
 203    }
 204    n->n_blink = NULL;
 205    head->h_ref = n;
 206    if (ok_blook(reply_in_same_charset) &&
 207          (cp = hfield1("content-type", mp)) != NULL)
 208       head->h_charset = mime_param_get("charset", cp);
 209 jleave:
 210    NYD_LEAVE;
 211 }
 212
 213 static int
 214 _list_reply(int *msgvec, enum header_flags hf)
 215 {
 216    struct header head;
 217    struct message *mp;
 218    char const *reply_to, *rcv, *cp;
 219    enum gfield gf;
 220    struct name *rt, *mft, *np;
 221    int *save_msgvec;
 222    NYD_ENTER;
 223
 224    /* TODO Since we may recur and do stuff with message lists we need to save
 225     * TODO away the argument vector as long as that isn't done by machinery */
 226    {
 227       size_t i;
 228       for (i = 0; msgvec[i] != 0; ++i)
 229          ;
 230       ++i;
 231       save_msgvec = ac_alloc(sizeof(*save_msgvec) * i);
 232       while (i-- > 0)
 233          save_msgvec[i] = msgvec[i];
 234       msgvec = save_msgvec;
 235    }
 236
 237 jnext_msg:
 238    mp = message + *msgvec - 1;
 239    touch(mp);
 240    setdot(mp);
 241
 242    memset(&head, 0, sizeof head);
 243    head.h_flags = hf;
 244
 245    head.h_subject = _reedit(hfield1("subject", mp));
 246    gf = ok_blook(fullnames) ? GFULL : GSKIN;
 247    rt = mft = NULL;
 248
 249    rcv = NULL;
 250    if ((reply_to = hfield1("reply-to", mp)) != NULL &&
 251          (cp = ok_vlook(reply_to_honour)) != NULL &&
 252          (rt = checkaddrs(lextract(reply_to, GTO | gf), EACM_STRICT, NULL)
 253          ) != NULL) {
 254       char const *tr = _("Reply-To %s%s");
 255       size_t l = strlen(tr) + strlen(rt->n_name) + 3 +1;
 256       char *sp = salloc(l);
 257
 258       snprintf(sp, l, tr, rt->n_name, (rt->n_flink != NULL ? "..." : ""));
 259       if (quadify(cp, UIZ_MAX, sp, TRU1) > FAL0)
 260          rcv = reply_to;
 261    }
 262
 263    if (rcv == NULL && (rcv = hfield1("from", mp)) == NULL)
 264       rcv = nameof(mp, 1);
 265
 266    /* Cc: */
 267    np = NULL;
 268    if (ok_blook(recipients_in_cc) && (cp = hfield1("to", mp)) != NULL)
 269       np = lextract(cp, GCC | gf);
 270    if ((cp = hfield1("cc", mp)) != NULL)
 271       np = cat(np, lextract(cp, GCC | gf));
 272    if (np != NULL)
 273       head.h_cc = delete_alternates(np);
 274
 275    /* To: */
 276    np = NULL;
 277    if (rcv != NULL)
 278       np = (rcv == reply_to) ? namelist_dup(rt, GTO | gf)
 279             : lextract(rcv, GTO | gf);
 280    if (!ok_blook(recipients_in_cc) && (cp = hfield1("to", mp)) != NULL)
 281       np = cat(np, lextract(cp, GTO | gf));
 282    /* Delete my name from reply list, and with it, all my alternate names */
 283    np = delete_alternates(np);
 284    if (count(np) == 0)
 285       np = lextract(rcv, GTO | gf);
 286    head.h_to = np;
 287
 288    /* The user may have send this to himself, don't ignore that */
 289    namelist_vaporise_head(&head, EACM_NORMAL, FAL0, NULL);
 290    if (head.h_to == NULL)
 291       head.h_to = np;
 292
 293    /* Mail-Followup-To: */
 294    mft = NULL;
 295    if (ok_vlook(followup_to_honour) != NULL &&
 296          (cp = hfield1("mail-followup-to", mp)) != NULL &&
 297          (mft = np = checkaddrs(lextract(cp, GTO | gf), EACM_STRICT, NULL)
 298          ) != NULL) {
 299       char const *tr = _("Followup-To %s%s");
 300       size_t l = strlen(tr) + strlen(np->n_name) + 3 +1;
 301       char *sp = salloc(l);
 302
 303       snprintf(sp, l, tr, np->n_name, (np->n_flink != NULL ? "..." : ""));
 304       if (quadify(ok_vlook(followup_to_honour), UIZ_MAX, sp, TRU1) > FAL0) {
 305          head.h_cc = NULL;
 306          head.h_to = np;
 307          head.h_mft =
 308          mft = namelist_vaporise_head(&head, EACM_STRICT, FAL0, NULL);
 309       } else
 310          mft = NULL;
 311    }
 312
 313    /* Special massage for list (follow-up) messages */
 314    if (mft != NULL || (hf & HF_LIST_REPLY) || ok_blook(followup_to)) {
 315       /* Learn about a possibly sending mailing list; use do for break; */
 316       if ((cp = hfield1("list-post", mp)) != NULL) do {
 317          struct name *x;
 318
 319          if ((x = lextract(cp, GEXTRA | GSKIN)) == NULL || x->n_flink != NULL ||
 320                (cp = url_mailto_to_address(x->n_name)) == NULL ||
 321                /* XXX terribly wasteful to create a new name, and can't we find
 322                 * XXX a way to mitigate that?? */
 323                is_addr_invalid(x = nalloc(cp, GEXTRA | GSKIN), EACM_STRICT)) {
 324             if (options & OPT_D_V)
 325                n_err(_("Message contains invalid List-Post: header\n"));
 326             cp = NULL;
 327             break;
 328          }
 329          cp = x->n_name;
 330
 331          /* A special case has been seen on e.g. ietf-announce@ietf.org:
 332           * these usually post to multiple groups, with ietf-announce@
 333           * in List-Post:, but with Reply-To: set to ietf@ietf.org (since
 334           * -announce@ is only used for announcements, say).
 335           * So our desire is to honour this request and actively overwrite
 336           * List-Post: for our purpose; but only if its a single address.
 337           * However, to avoid ambiguities with users that place themselve in
 338           * Reply-To: and mailing lists which don't overwrite this (or only
 339           * extend this, shall such exist), only do so if reply_to exists of
 340           * a single address which points to the same domain as List-Post: */
 341          if (reply_to != NULL && rt->n_flink == NULL &&
 342                name_is_same_domain(x, rt))
 343             cp = rt->n_name; /* rt is EACM_STRICT tested */
 344
 345          /* "Automatically `mlist'" the List-Post: address temporarily */
 346          if (is_mlist(cp, FAL0) == MLIST_OTHER)
 347             head.h_list_post = cp;
 348          else
 349             cp = NULL;
 350       } while (0);
 351
 352       /* In case of list replies we actively sort out any non-list recipient,
 353        * but _only_ if we did not honour a MFT:, assuming that members of MFT
 354        * were there for a reason; cp is still List-Post:/eqivalent */
 355       if ((hf & HF_LIST_REPLY) && mft == NULL) {
 356          struct name *nhp = head.h_to;
 357          head.h_to = NULL;
 358 j_lt_redo:
 359          while (nhp != NULL) {
 360             np = nhp;
 361             nhp = nhp->n_flink;
 362
 363             if ((cp != NULL && !asccasecmp(cp, np->n_name)) ||
 364                   is_mlist(np->n_name, FAL0) != MLIST_OTHER) {
 365                np->n_type = (np->n_type & ~GMASK) | GTO;
 366                np->n_flink = head.h_to;
 367                head.h_to = np;
 368             }
 369          }
 370          if ((nhp = head.h_cc) != NULL) {
 371             head.h_cc = NULL;
 372             goto j_lt_redo;
 373          }
 374       }
 375    }
 376
 377    make_ref_and_cs(mp, &head);
 378
 379    if (ok_blook(quote_as_attachment)) {
 380       head.h_attach = csalloc(1, sizeof *head.h_attach);
 381       head.h_attach->a_msgno = *msgvec;
 382       head.h_attach->a_content_description = _("Original message content");
 383    }
 384
 385    if (mail1(&head, 1, mp, NULL, !!(hf & HF_RECIPIENT_RECORD), 0) == OKAY &&
 386          ok_blook(markanswered) && !(mp->m_flag & MANSWERED))
 387       mp->m_flag |= MANSWER | MANSWERED;
 388
 389    if (*++msgvec != 0) {
 390       /* TODO message (error) ring.., less sleep */
 391       printf(_("Waiting a second before proceeding to the next message..\n"));
 392       fflush(stdout);
 393       n_msleep(1000, FAL0);
 394       goto jnext_msg;
 395    }
 396
 397    ac_free(save_msgvec);
 398    NYD_LEAVE;
 399    return 0;
 400 }
 401
 402 static int
 403 (*_reply_or_Reply(char c))(int *, bool_t)
 404 {
 405    int (*rv)(int*, bool_t);
 406    NYD_ENTER;
 407
 408    rv = (ok_blook(flipr) ^ (c == 'R')) ? &_Reply : &_reply;
 409    NYD_LEAVE;
 410    return rv;
 411 }
 412
 413 static int
 414 _reply(int *msgvec, bool_t recipient_record)
 415 {
 416    int rv;
 417    NYD_ENTER;
 418
 419    rv = _list_reply(msgvec, recipient_record ? HF_RECIPIENT_RECORD : HF_NONE);
 420    NYD_LEAVE;
 421    return rv;
 422 }
 423
 424 static int
 425 _Reply(int *msgvec, bool_t recipient_record)
 426 {
 427    struct header head;
 428    struct message *mp;
 429    int *ap;
 430    char *cp;
 431    enum gfield gf;
 432    NYD_ENTER;
 433
 434    memset(&head, 0, sizeof head);
 435    gf = ok_blook(fullnames) ? GFULL : GSKIN;
 436
 437    for (ap = msgvec; *ap != 0; ++ap) {
 438       char const *rp;
 439       struct name *rt;
 440
 441       mp = message + *ap - 1;
 442       touch(mp);
 443       setdot(mp);
 444
 445       if ((rp = hfield1("reply-to", mp)) != NULL &&
 446             (cp = ok_vlook(reply_to_honour)) != NULL &&
 447             (rt = checkaddrs(lextract(rp, GTO | gf), EACM_STRICT, NULL)
 448             ) != NULL) {
 449          char const *tr = _("Reply-To %s%s");
 450          size_t l = strlen(tr) + strlen(rt->n_name) + 3 +1;
 451          char *sp = salloc(l);
 452
 453          snprintf(sp, l, tr, rt->n_name, (rt->n_flink != NULL ? "..." : ""));
 454          if (quadify(cp, UIZ_MAX, sp, TRU1) > FAL0) {
 455             head.h_to = cat(head.h_to, rt);
 456             continue;
 457          }
 458       }
 459
 460       if ((cp = hfield1("from", mp)) == NULL)
 461          cp = nameof(mp, 2);
 462       head.h_to = cat(head.h_to, lextract(cp, GTO | gf));
 463    }
 464    if (head.h_to == NULL)
 465       goto jleave;
 466
 467    mp = message + msgvec[0] - 1;
 468    head.h_subject = hfield1("subject", mp);
 469    head.h_subject = _reedit(head.h_subject);
 470    make_ref_and_cs(mp, &head);
 471
 472    if (ok_blook(quote_as_attachment)) {
 473       head.h_attach = csalloc(1, sizeof *head.h_attach);
 474       head.h_attach->a_msgno = *msgvec;
 475       head.h_attach->a_content_description = _("Original message content");
 476    }
 477
 478    if (mail1(&head, 1, mp, NULL, recipient_record, 0) == OKAY &&
 479          ok_blook(markanswered) && !(mp->m_flag & MANSWERED))
 480       mp->m_flag |= MANSWER | MANSWERED;
 481 jleave:
 482    NYD_LEAVE;
 483    return 0;
 484 }
 485
 486 static int
 487 _fwd(char *str, int recipient_record)
 488 {
 489    struct header head;
 490    int *msgvec, rv = 1;
 491    char *recipient;
 492    struct message *mp;
 493    bool_t f, forward_as_attachment;
 494    NYD_ENTER;
 495
 496    if ((recipient = laststring(str, &f, TRU1)) == NULL) {
 497       puts(_("No recipient specified."));
 498       goto jleave;
 499    }
 500
 501    forward_as_attachment = ok_blook(forward_as_attachment);
 502    msgvec = salloc((msgCount + 2) * sizeof *msgvec);
 503
 504    if (!f) {
 505       *msgvec = first(0, MMNORM);
 506       if (*msgvec == 0) {
 507          if (pstate & (PS_HOOK_MASK | PS_ROBOT)) {
 508             rv = 0;
 509             goto jleave;
 510          }
 511          printf(_("No messages to forward.\n"));
 512          goto jleave;
 513       }
 514       msgvec[1] = 0;
 515    } else if (getmsglist(str, msgvec, 0) < 0)
 516       goto jleave;
 517
 518    if (*msgvec == 0) {
 519       if (pstate & (PS_HOOK_MASK | PS_ROBOT)) {
 520          rv = 0;
 521          goto jleave;
 522       }
 523       printf(_("No applicable messages.\n"));
 524       goto jleave;
 525    }
 526    if (msgvec[1] != 0) {
 527       printf(_("Cannot forward multiple messages at once\n"));
 528       goto jleave;
 529    }
 530
 531    memset(&head, 0, sizeof head);
 532    if ((head.h_to = lextract(recipient,
 533          (GTO | (ok_blook(fullnames) ? GFULL : GSKIN)))) == NULL)
 534       goto jleave;
 535
 536    mp = message + *msgvec - 1;
 537
 538    if (forward_as_attachment) {
 539       head.h_attach = csalloc(1, sizeof *head.h_attach);
 540       head.h_attach->a_msgno = *msgvec;
 541       head.h_attach->a_content_description = _("Forwarded message");
 542    } else {
 543       touch(mp);
 544       setdot(mp);
 545    }
 546    head.h_subject = hfield1("subject", mp);
 547    head.h_subject = __fwdedit(head.h_subject);
 548    mail1(&head, 1, (forward_as_attachment ? NULL : mp), NULL, recipient_record,
 549       1);
 550    rv = 0;
 551 jleave:
 552    NYD_LEAVE;
 553    return rv;
 554 }
 555
 556 static char *
 557 __fwdedit(char *subj)
 558 {
 559    struct str in, out;
 560    char *newsubj = NULL;
 561    NYD_ENTER;
 562
 563    if (subj == NULL || *subj == '\0')
 564       goto jleave;
 565
 566    in.s = subj;
 567    in.l = strlen(subj);
 568    mime_fromhdr(&in, &out, TD_ISPR | TD_ICONV);
 569
 570    newsubj = salloc(out.l + 6);
 571    memcpy(newsubj, "Fwd: ", 5); /* XXX localizable */
 572    memcpy(newsubj + 5, out.s, out.l +1);
 573    free(out.s);
 574 jleave:
 575    NYD_LEAVE;
 576    return newsubj;
 577 }
 578
 579 static int
 580 _resend1(void *v, bool_t add_resent)
 581 {
 582    char *name, *str;
 583    struct name *to, *sn;
 584    int *ip, *msgvec;
 585    bool_t f = TRU1;
 586    NYD_ENTER;
 587
 588    str = v;
 589    msgvec = salloc((msgCount + 2) * sizeof *msgvec);
 590    name = laststring(str, &f, TRU1);
 591    if (name == NULL) {
 592       puts(_("No recipient specified."));
 593       goto jleave;
 594    }
 595
 596    if (!f) {
 597       *msgvec = first(0, MMNORM);
 598       if (*msgvec == 0) {
 599          if (pstate & (PS_HOOK_MASK | PS_ROBOT)) {
 600             f = FAL0;
 601             goto jleave;
 602          }
 603          puts(_("No applicable messages."));
 604          goto jleave;
 605       }
 606       msgvec[1] = 0;
 607    } else if (getmsglist(str, msgvec, 0) < 0)
 608       goto jleave;
 609
 610    if (*msgvec == 0) {
 611       if (pstate & (PS_HOOK_MASK | PS_ROBOT)) {
 612          f = FAL0;
 613          goto jleave;
 614       }
 615       printf("No applicable messages.\n");
 616       goto jleave;
 617    }
 618
 619    sn = nalloc(name, GTO | GSKIN);
 620    to = usermap(sn, FAL0);
 621    for (ip = msgvec; *ip != 0 && UICMP(z, PTR2SIZE(ip - msgvec), <, msgCount);
 622          ++ip)
 623       if (resend_msg(message + *ip - 1, to, add_resent) != OKAY)
 624          goto jleave;
 625    f = FAL0;
 626 jleave:
 627    NYD_LEAVE;
 628    return (f != FAL0);
 629 }
 630
 631 static int
 632 _c_file(void *v, enum fedit_mode fm)
 633 {
 634    char **argv = v;
 635    int i;
 636    NYD2_ENTER;
 637
 638    if (*argv == NULL) {
 639       newfileinfo();
 640       i = 0;
 641       goto jleave;
 642    }
 643
 644    if (pstate & PS_HOOK_MASK) {
 645       n_err(_("Cannot change folder from within a hook\n"));
 646       i = 1;
 647       goto jleave;
 648    }
 649
 650    save_mbox_for_possible_quitstuff();
 651
 652    i = setfile(*argv, fm);
 653    if (i < 0) {
 654       i = 1;
 655       goto jleave;
 656    }
 657    assert(!(fm & FEDIT_NEWMAIL)); /* (Prevent implementation error) */
 658    if (pstate & PS_SETFILE_OPENED)
 659       check_folder_hook(FAL0);
 660
 661    if (i > 0) {
 662       /* TODO Don't report "no messages" == 1 == error when we're in, e.g.,
 663        * TODO a macro: because that recursed commando loop will terminate the
 664        * TODO entire macro due to that!  So either the user needs to be able
 665        * TODO to react&ignore this "error" (as in "if DOSTUFF" or "DOSTUFF;
 666        * TODO if $?", then "overriding an "error"), or we need a different
 667        * TODO return that differentiates */
 668       i = (pstate & PS_ROBOT) ? 0 : 1;
 669       goto jleave;
 670    }
 671    if (pstate & PS_SETFILE_OPENED)
 672       announce(ok_blook(bsdcompat) || ok_blook(bsdannounce));
 673    i = 0;
 674 jleave:
 675    NYD2_LEAVE;
 676    return i;
 677 }
 678
 679 FL int
 680 c_shell(void *v)
 681 {
 682    char *str = v, *cmd;
 683    size_t cmdsize;
 684    sigset_t mask;
 685    sighandler_type sigint;
 686    NYD_ENTER;
 687
 688    cmd = smalloc(cmdsize = strlen(str) +1);
 689    memcpy(cmd, str, cmdsize);
 690    _bangexp(&cmd, &cmdsize);
 691
 692    sigint = safe_signal(SIGINT, SIG_IGN);
 693    sigemptyset(&mask);
 694    run_command(ok_vlook(SHELL), &mask, COMMAND_FD_PASS, COMMAND_FD_PASS, "-c",
 695       cmd, NULL, NULL);
 696    safe_signal(SIGINT, sigint);
 697    printf("!\n");
 698
 699    free(cmd);
 700    NYD_LEAVE;
 701    return 0;
 702 }
 703
 704 FL int
 705 c_dosh(void *v)
 706 {
 707    sighandler_type sigint;
 708    NYD_ENTER;
 709    UNUSED(v);
 710
 711    sigint = safe_signal(SIGINT, SIG_IGN);
 712    run_command(ok_vlook(SHELL), 0, COMMAND_FD_PASS, COMMAND_FD_PASS, NULL,
 713       NULL, NULL, NULL);
 714    safe_signal(SIGINT, sigint);
 715    putchar('\n');
 716    NYD_LEAVE;
 717    return 0;
 718 }
 719
 720 FL int
 721 c_cwd(void *v)
 722 {
 723    char buf[PATH_MAX]; /* TODO getcwd(3) may return a larger value */
 724    NYD_ENTER;
 725
 726    if (getcwd(buf, sizeof buf) != NULL) {
 727       puts(buf);
 728       v = (void*)0x1;
 729    } else {
 730       n_perr(_("getcwd"), 0);
 731       v = NULL;
 732    }
 733    NYD_LEAVE;
 734    return (v == NULL);
 735 }
 736
 737 FL int
 738 c_chdir(void *v)
 739 {
 740    char **arglist = v;
 741    char const *cp;
 742    NYD_ENTER;
 743
 744    if (*arglist == NULL)
 745       cp = ok_vlook(HOME);
 746    else if ((cp = file_expand(*arglist)) == NULL)
 747       goto jleave;
 748    if (chdir(cp) == -1) {
 749       n_perr(cp, 0);
 750       cp = NULL;
 751    }
 752 jleave:
 753    NYD_LEAVE;
 754    return (cp == NULL);
 755 }
 756
 757 FL int
 758 c_reply(void *v)
 759 {
 760    int rv;
 761    NYD_ENTER;
 762
 763    rv = (*_reply_or_Reply('r'))(v, FAL0);
 764    NYD_LEAVE;
 765    return rv;
 766 }
 767
 768 FL int
 769 c_replyall(void *v)
 770 {
 771    int rv;
 772    NYD_ENTER;
 773
 774    rv = _reply(v, FAL0);
 775    NYD_LEAVE;
 776    return rv;
 777 }
 778
 779 FL int
 780 c_replysender(void *v)
 781 {
 782    int rv;
 783    NYD_ENTER;
 784
 785    rv = _Reply(v, FAL0);
 786    NYD_LEAVE;
 787    return rv;
 788 }
 789
 790 FL int
 791 c_Reply(void *v)
 792 {
 793    int rv;
 794    NYD_ENTER;
 795
 796    rv = (*_reply_or_Reply('R'))(v, FAL0);
 797    NYD_LEAVE;
 798    return rv;
 799 }
 800
 801 FL int
 802 c_Lreply(void *v)
 803 {
 804    int rv;
 805    NYD_ENTER;
 806
 807    rv = _list_reply(v, HF_LIST_REPLY);
 808    NYD_LEAVE;
 809    return rv;
 810 }
 811
 812 FL int
 813 c_followup(void *v)
 814 {
 815    int rv;
 816    NYD_ENTER;
 817
 818    rv = (*_reply_or_Reply('r'))(v, TRU1);
 819    NYD_LEAVE;
 820    return rv;
 821 }
 822
 823 FL int
 824 c_followupall(void *v)
 825 {
 826    int rv;
 827    NYD_ENTER;
 828
 829    rv = _reply(v, TRU1);
 830    NYD_LEAVE;
 831    return rv;
 832 }
 833
 834 FL int
 835 c_followupsender(void *v)
 836 {
 837    int rv;
 838    NYD_ENTER;
 839
 840    rv = _Reply(v, TRU1);
 841    NYD_LEAVE;
 842    return rv;
 843 }
 844
 845 FL int
 846 c_Followup(void *v)
 847 {
 848    int rv;
 849    NYD_ENTER;
 850
 851    rv = (*_reply_or_Reply('R'))(v, TRU1);
 852    NYD_LEAVE;
 853    return rv;
 854 }
 855
 856 FL int
 857 c_forward(void *v)
 858 {
 859    int rv;
 860    NYD_ENTER;
 861
 862    rv = _fwd(v, 0);
 863    NYD_LEAVE;
 864    return rv;
 865 }
 866
 867 FL int
 868 c_Forward(void *v)
 869 {
 870    int rv;
 871    NYD_ENTER;
 872
 873    rv = _fwd(v, 1);
 874    NYD_LEAVE;
 875    return rv;
 876 }
 877
 878 FL int
 879 c_resend(void *v)
 880 {
 881    int rv;
 882    NYD_ENTER;
 883
 884    rv = _resend1(v, TRU1);
 885    NYD_LEAVE;
 886    return rv;
 887 }
 888
 889 FL int
 890 c_Resend(void *v)
 891 {
 892    int rv;
 893    NYD_ENTER;
 894
 895    rv = _resend1(v, FAL0);
 896    NYD_LEAVE;
 897    return rv;
 898 }
 899
 900 FL int
 901 c_messize(void *v)
 902 {
 903    int *msgvec = v, *ip, mesg;
 904    struct message *mp;
 905    NYD_ENTER;
 906
 907    for (ip = msgvec; *ip != 0; ++ip) {
 908       mesg = *ip;
 909       mp = message + mesg - 1;
 910       printf("%d: ", mesg);
 911       if (mp->m_xlines > 0)
 912          printf("%ld", mp->m_xlines);
 913       else
 914          putchar(' ');
 915       printf("/%lu\n", (ul_i)mp->m_xsize);
 916    }
 917    NYD_LEAVE;
 918    return 0;
 919 }
 920
 921 FL int
 922 c_file(void *v)
 923 {
 924    int rv;
 925    NYD_ENTER;
 926
 927    rv = _c_file(v, FEDIT_NONE);
 928    NYD_LEAVE;
 929    return rv;
 930 }
 931
 932 FL int
 933 c_File(void *v)
 934 {
 935    int rv;
 936    NYD_ENTER;
 937
 938    rv = _c_file(v, FEDIT_RDONLY);
 939    NYD_LEAVE;
 940    return rv;
 941 }
 942
 943 FL int
 944 c_echo(void *v){
 945    char const **argv, **ap, *cp;
 946    NYD_ENTER;
 947
 948    for(ap = argv = v; *ap != NULL; ++ap){
 949       if(ap != argv)
 950          putchar(' ');
 951       if((cp = fexpand(*ap, FEXP_NSHORTCUT | FEXP_NVAR)) == NULL)
 952          cp = *ap;
 953       fputs(cp, stdout);
 954    }
 955    putchar('\n');
 956    NYD_LEAVE;
 957    return 0;
 958 }
 959
 960 FL int
 961 c_newmail(void *v)
 962 {
 963    int val = 1, mdot;
 964    NYD_ENTER;
 965    UNUSED(v);
 966
 967    if ((val = setfile(mailname,
 968             FEDIT_NEWMAIL | ((mb.mb_perm & MB_DELE) ? 0 : FEDIT_RDONLY))
 969          ) == 0) {
 970       mdot = getmdot(1);
 971       setdot(message + mdot - 1);
 972    }
 973    NYD_LEAVE;
 974    return val;
 975 }
 976
 977 FL int
 978 c_noop(void *v)
 979 {
 980    int rv = 0;
 981    NYD_ENTER;
 982    UNUSED(v);
 983
 984    switch (mb.mb_type) {
 985    case MB_POP3:
 986 #ifdef HAVE_POP3
 987       pop3_noop();
 988 #else
 989       rv = c_cmdnotsupp(NULL);
 990 #endif
 991       break;
 992    default:
 993       break;
 994    }
 995    NYD_LEAVE;
 996    return rv;
 997 }
 998
 999 FL int
1000 c_remove(void *v)
1001 {
1002    char const *fmt;
1003    size_t fmt_len;
1004    char **args, *name, *ename;
1005    int ec;
1006    NYD_ENTER;
1007
1008    if (*(args = v) == NULL) {
1009       n_err(_("Synopsis: remove: <mailbox>...\n"));
1010       ec = 1;
1011       goto jleave;
1012    }
1013
1014    ec = 0;
1015
1016    fmt = _("Remove %s");
1017    fmt_len = strlen(fmt);
1018    do {
1019       if ((name = expand(*args)) == NULL)
1020          continue;
1021       ename = n_shexp_quote_cp(name, FAL0);
1022
1023       if (!strcmp(name, mailname)) {
1024          n_err(_("Cannot remove current mailbox %s\n"), ename);
1025          ec |= 1;
1026          continue;
1027       }
1028       {
1029          size_t vl = strlen(ename) + fmt_len +1;
1030          char *vb = salloc(vl);
1031          bool_t asw;
1032          snprintf(vb, vl, fmt, ename);
1033          asw = getapproval(vb, TRU1);
1034          if (!asw)
1035             continue;
1036       }
1037
1038       switch (which_protocol(name)) {
1039       case PROTO_FILE:
1040          if (unlink(name) == -1) { /* TODO do not handle .gz .bz2 .xz.. */
1041             int se = errno;
1042
1043             if (se == EISDIR) {
1044                struct stat sb;
1045
1046                if (!stat(name, &sb) && S_ISDIR(sb.st_mode)) {
1047                   if (!rmdir(name))
1048                      break;
1049                   se = errno;
1050                }
1051             }
1052             n_perr(name, se);
1053             ec |= 1;
1054          }
1055          break;
1056       case PROTO_POP3:
1057          n_err(_("Cannot remove POP3 mailbox %s\n"), ename);
1058          ec |= 1;
1059          break;
1060       case PROTO_MAILDIR:
1061          if (maildir_remove(name) != OKAY)
1062             ec |= 1;
1063          break;
1064       case PROTO_UNKNOWN:
1065          n_err(_("Not removed: unknown protocol: %s\n"), ename);
1066          ec |= 1;
1067          break;
1068       }
1069    } while (*++args != NULL);
1070 jleave:
1071    NYD_LEAVE;
1072    return ec;
1073 }
1074
1075 FL int
1076 c_rename(void *v)
1077 {
1078    char **args = v, *old, *new;
1079    enum protocol oldp, newp;
1080    int ec;
1081    NYD_ENTER;
1082
1083    ec = 1;
1084
1085    if (args[0] == NULL || args[1] == NULL || args[2] != NULL) {
1086       n_err(_("Synopsis: rename: <old> <new>\n"));
1087       goto jleave;
1088    }
1089
1090    if ((old = expand(args[0])) == NULL)
1091       goto jleave;
1092    oldp = which_protocol(old);
1093    if ((new = expand(args[1])) == NULL)
1094       goto jleave;
1095    newp = which_protocol(new);
1096
1097    if (!strcmp(old, mailname) || !strcmp(new, mailname)) {
1098       n_err(_("Cannot rename current mailbox %s\n"),
1099          n_shexp_quote_cp(old, FAL0));
1100       goto jleave;
1101    }
1102
1103    ec = 0;
1104
1105    if (newp == PROTO_POP3)
1106       goto jnopop3;
1107    switch (oldp) {
1108    case PROTO_FILE:
1109       if (link(old, new) == -1) {
1110          switch (errno) {
1111          case EACCES:
1112          case EEXIST:
1113          case ENAMETOOLONG:
1114          case ENOENT:
1115          case ENOSPC:
1116          case EXDEV:
1117             n_perr(new, 0);
1118             break;
1119          default:
1120             n_perr(old, 0);
1121             break;
1122          }
1123          ec |= 1;
1124       } else if (unlink(old) == -1) {
1125          n_perr(old, 0);
1126          ec |= 1;
1127       }
1128       break;
1129    case PROTO_MAILDIR:
1130       if (rename(old, new) == -1) {
1131          n_perr(old, 0);
1132          ec |= 1;
1133       }
1134       break;
1135    case PROTO_POP3:
1136 jnopop3:
1137       n_err(_("Cannot rename POP3 mailboxes\n"));
1138       ec |= 1;
1139       break;
1140    case PROTO_UNKNOWN:
1141    default:
1142       n_err(_("Unknown protocol in %s and %s; not renamed\n"),
1143          n_shexp_quote_cp(old, FAL0), n_shexp_quote_cp(new, FAL0));
1144       ec |= 1;
1145       break;
1146    }
1147 jleave:
1148    NYD_LEAVE;
1149    return ec;
1150 }
1151
1152 FL int
1153 c_urlencode(void *v) /* XXX IDNA?? */
1154 {
1155    char **ap;
1156    NYD_ENTER;
1157
1158    for (ap = v; *ap != NULL; ++ap) {
1159       char *in = *ap, *out = urlxenc(in, FAL0);
1160
1161       printf(" in: <%s> (%" PRIuZ " bytes)\nout: <%s> (%" PRIuZ " bytes)\n",
1162          in, strlen(in), out, strlen(out));
1163    }
1164    NYD_LEAVE;
1165    return 0;
1166 }
1167
1168 FL int
1169 c_urldecode(void *v) /* XXX IDNA?? */
1170 {
1171    char **ap;
1172    NYD_ENTER;
1173
1174    for (ap = v; *ap != NULL; ++ap) {
1175       char *in = *ap, *out = urlxdec(in);
1176
1177       printf(" in: <%s> (%" PRIuZ " bytes)\nout: <%s> (%" PRIuZ " bytes)\n",
1178          in, strlen(in), out, strlen(out));
1179    }
1180    NYD_LEAVE;
1181    return 0;
1182 }
1183
1184 /* s-it-mode */