diplodocus.org Git - nmh/blob - uip/forw.c

   1 /* forw.c -- forward a message, or group of messages.
   2  *
   3  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   4  * COPYRIGHT file in the root directory of the nmh distribution for
   5  * complete copyright information.
   6  */
   7
   8 #include "h/mh.h"
   9 #include "sbr/context_replace.h"
  10 #include "sbr/context_find.h"
  11 #include "sbr/ambigsw.h"
  12 #include "sbr/pidstatus.h"
  13 #include "sbr/path.h"
  14 #include "sbr/print_version.h"
  15 #include "sbr/print_help.h"
  16 #include "sbr/arglist.h"
  17 #include "sbr/error.h"
  18 #include <fcntl.h>
  19 #include "h/tws.h"
  20 #include "h/done.h"
  21 #include "h/utils.h"
  22 #include "sbr/m_maildir.h"
  23 #include "forwsbr.h"
  24
  25
  26 #define IFORMAT "digest-issue-%s"
  27 #define VFORMAT "digest-volume-%s"
  28
  29 #define FORW_SWITCHES \
  30     X("annotate", 0, ANNOSW) \
  31     X("noannotate", 0, NANNOSW) \
  32     X("draftfolder +folder", 0, DFOLDSW) \
  33     X("draftmessage msg", 0, DMSGSW) \
  34     X("nodraftfolder", 0, NDFLDSW) \
  35     X("editor editor", 0, EDITRSW) \
  36     X("noedit", 0, NEDITSW) \
  37     X("filter filterfile", 0, FILTSW) \
  38     X("form formfile", 0, FORMSW) \
  39     X("format", 5, FRMTSW) \
  40     X("noformat", 7, NFRMTSW) \
  41     X("inplace", 0, INPLSW) \
  42     X("noinplace", 0, NINPLSW) \
  43     X("mime", 0, MIMESW) \
  44     X("nomime", 0, NMIMESW) \
  45     X("digest list", 0, DGSTSW) \
  46     X("issue number", 0, ISSUESW) \
  47     X("volume number", 0, VOLUMSW) \
  48     X("whatnowproc program", 0, WHATSW) \
  49     X("nowhatnowproc", 0, NWHATSW) \
  50     X("dashstuffing", 0, BITSTUFFSW)          /* interface to mhl */ \
  51     X("nodashstuffing", 0, NBITSTUFFSW) \
  52     X("version", 0, VERSIONSW) \
  53     X("help", 0, HELPSW) \
  54     X("file file", 4, FILESW) \
  55     X("build", 5, BILDSW)                     /* interface from mhe */ \
  56     X("from address", 0, FROMSW) \
  57     X("to address", 0, TOSW) \
  58     X("cc address", 0, CCSW) \
  59     X("subject text", 0, SUBJECTSW) \
  60     X("fcc mailbox", 0, FCCSW) \
  61     X("width columns", 0, WIDTHSW) \
  62
  63 #define X(sw, minchars, id) id,
  64 DEFINE_SWITCH_ENUM(FORW);
  65 #undef X
  66
  67 #define X(sw, minchars, id) { sw, minchars, id },
  68 DEFINE_SWITCH_ARRAY(FORW, switches);
  69 #undef X
  70
  71 #define DISPO_SWITCHES \
  72     X("quit", 0, NOSW) \
  73     X("replace", 0, YESW) \
  74     X("list", 0, LISTDSW) \
  75     X("refile +folder", 0, REFILSW) \
  76     X("new", 0, NEWSW) \
  77
  78 #define X(sw, minchars, id) id,
  79 DEFINE_SWITCH_ENUM(DISPO);
  80 #undef X
  81
  82 #define X(sw, minchars, id) { sw, minchars, id },
  83 DEFINE_SWITCH_ARRAY(DISPO, aqrnl);
  84 #undef X
  85
  86 static struct swit aqrl[] = {
  87     { "quit", 0, NOSW },
  88     { "replace", 0, YESW },
  89     { "list", 0, LISTDSW },
  90     { "refile +folder", 0, REFILSW },
  91     { NULL, 0, 0 }
  92 };
  93
  94 static char drft[BUFSIZ];
  95
  96 static char delim3[] =
  97     "\n------------------------------------------------------------\n\n";
  98 static char delim4[] = "\n------------------------------\n\n";
  99
 100
 101 static struct msgs *mp = NULL;          /* used a lot */
 102
 103
 104 /*
 105  * static prototypes
 106  */
 107 static void mhl_draft (int, char *, int, int, char *, char *, int);
 108 static void copy_draft (int, char *, char *, int, int, int);
 109 static void copy_mime_draft (int);
 110
 111
 112 int
 113 main (int argc, char **argv)
 114 {
 115     bool anot = false;
 116     bool inplace = true;
 117     bool mime = false;
 118     int issue = 0, volume = 0, dashstuff = 0;
 119     bool nedit = false;
 120     bool nwhat = false;
 121     int i, in;
 122     int out, isdf = 0, msgnum = 0;
 123     int outputlinelen = OUTPUTLINELEN;
 124     int dat[5];
 125     char *cp, *cwd, *maildir, *dfolder = NULL;
 126     char *dmsg = NULL, *digest = NULL, *ed = NULL;
 127     char *file = NULL, *filter = NULL, *folder = NULL, *fwdmsg = NULL;
 128     char *from = NULL, *to = NULL, *cc = NULL, *subject = NULL, *fcc = NULL;
 129     char *form = NULL, buf[BUFSIZ];
 130     char **argp, **arguments;
 131     struct stat st;
 132     struct msgs_array msgs = { 0, 0, NULL };
 133     bool buildsw = false;
 134
 135     if (nmh_init(argv[0], true, true)) { return 1; }
 136
 137     arguments = getarguments (invo_name, argc, argv, 1);
 138     argp = arguments;
 139
 140     while ((cp = *argp++)) {
 141         if (*cp == '-') {
 142             switch (smatch (++cp, switches)) {
 143                 case AMBIGSW:
 144                     ambigsw (cp, switches);
 145                     done (1);
 146                 case UNKWNSW:
 147                     die("-%s unknown", cp);
 148
 149                 case HELPSW:
 150                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 151                         invo_name);
 152                     print_help (buf, switches, 1);
 153                     done (0);
 154                 case VERSIONSW:
 155                     print_version(invo_name);
 156                     done (0);
 157
 158                 case ANNOSW:
 159                     anot = true;
 160                     continue;
 161                 case NANNOSW:
 162                     anot = false;
 163                     continue;
 164
 165                 case EDITRSW:
 166                     if (!(ed = *argp++) || *ed == '-')
 167                         die("missing argument to %s", argp[-2]);
 168                     nedit = false;
 169                     continue;
 170                 case NEDITSW:
 171                     nedit = true;
 172                     continue;
 173
 174                 case WHATSW:
 175                     if (!(whatnowproc = *argp++) || *whatnowproc == '-')
 176                         die("missing argument to %s", argp[-2]);
 177                     nwhat = false;
 178                     continue;
 179                 case BILDSW:
 180                     buildsw = true;
 181                     /* FALLTHRU */
 182                 case NWHATSW:
 183                     nwhat = true;
 184                     continue;
 185
 186                 case FILESW:
 187                     if (file)
 188                         die("only one file at a time!");
 189                     if (!(cp = *argp++) || *cp == '-')
 190                         die("missing argument to %s", argp[-2]);
 191                     file = path (cp, TFILE);
 192                     continue;
 193                 case FILTSW:
 194                     if (!(cp = *argp++) || *cp == '-')
 195                         die("missing argument to %s", argp[-2]);
 196                     filter = mh_xstrdup(etcpath(cp));
 197                     mime = false;
 198                     continue;
 199                 case FORMSW:
 200                     if (!(form = *argp++) || *form == '-')
 201                         die("missing argument to %s", argp[-2]);
 202                     continue;
 203
 204                 case FRMTSW:
 205                     filter = mh_xstrdup(etcpath(mhlforward));
 206                     continue;
 207                 case NFRMTSW:
 208                     filter = NULL;
 209                     continue;
 210
 211                 case INPLSW:
 212                     inplace = true;
 213                     continue;
 214                 case NINPLSW:
 215                     inplace = false;
 216                     continue;
 217
 218                 case MIMESW:
 219                     mime = true;
 220                     filter = NULL;
 221                     continue;
 222                 case NMIMESW:
 223                     mime = false;
 224                     continue;
 225
 226                 case DGSTSW:
 227                     if (!(cp = *argp++) || *cp == '-')
 228                         die("missing argument to %s", argp[-2]);
 229                     digest = mh_xstrdup(cp);
 230                     mime = false;
 231                     continue;
 232                 case ISSUESW:
 233                     if (!(cp = *argp++) || *cp == '-')
 234                         die("missing argument to %s", argp[-2]);
 235                     if ((issue = atoi (cp)) < 1)
 236                         die("bad argument %s %s", argp[-2], cp);
 237                     continue;
 238                 case VOLUMSW:
 239                     if (!(cp = *argp++) || *cp == '-')
 240                         die("missing argument to %s", argp[-2]);
 241                     if ((volume = atoi (cp)) < 1)
 242                         die("bad argument %s %s", argp[-2], cp);
 243                     continue;
 244
 245                 case DFOLDSW:
 246                     if (dfolder)
 247                         die("only one draft folder at a time!");
 248                     if (!(cp = *argp++) || *cp == '-')
 249                         die("missing argument to %s", argp[-2]);
 250                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 251                                     *cp != '@' ? TFOLDER : TSUBCWF);
 252                     continue;
 253                 case DMSGSW:
 254                     if (dmsg)
 255                         die("only one draft message at a time!");
 256                     if (!(dmsg = *argp++) || *dmsg == '-')
 257                         die("missing argument to %s", argp[-2]);
 258                     continue;
 259                 case NDFLDSW:
 260                     dfolder = NULL;
 261                     isdf = NOTOK;
 262                     continue;
 263
 264                 case BITSTUFFSW:
 265                     dashstuff = 1;      /* ternary logic */
 266                     continue;
 267                 case NBITSTUFFSW:
 268                     dashstuff = -1;     /* ternary logic */
 269                     continue;
 270
 271                 case FROMSW:
 272                     if (!(cp = *argp++) || *cp == '-')
 273                         die("missing argument to %s", argp[-2]);
 274                     from = addlist(from, cp);
 275                     continue;
 276                 case TOSW:
 277                     if (!(cp = *argp++) || *cp == '-')
 278                         die("missing argument to %s", argp[-2]);
 279                     to = addlist(to, cp);
 280                     continue;
 281                 case CCSW:
 282                     if (!(cp = *argp++) || *cp == '-')
 283                         die("missing argument to %s", argp[-2]);
 284                     cc = addlist(cc, cp);
 285                     continue;
 286                 case FCCSW:
 287                     if (!(cp = *argp++) || *cp == '-')
 288                         die("missing argument to %s", argp[-2]);
 289                     fcc = addlist(fcc, cp);
 290                     continue;
 291                 case SUBJECTSW:
 292                     if (!(cp = *argp++) || *cp == '-')
 293                         die("missing argument to %s", argp[-2]);
 294                     subject = mh_xstrdup(cp);
 295                     continue;
 296
 297                 case WIDTHSW:
 298                     if (!(cp = *argp++) || *cp == '-')
 299                         die("missing argument to %s", argp[-2]);
 300                     if ((outputlinelen = atoi(cp)) < 10)
 301                         die("impossible width %d", outputlinelen);
 302                     continue;
 303             }
 304         }
 305         if (*cp == '+' || *cp == '@') {
 306             if (folder)
 307                 die("only one folder at a time!");
 308             folder = pluspath (cp);
 309         } else {
 310             app_msgarg(&msgs, cp);
 311         }
 312     }
 313
 314     cwd = mh_xstrdup(pwd ());
 315
 316     if (!context_find ("path"))
 317         free (path ("./", TFOLDER));
 318     if (file && (msgs.size || folder))
 319         die("can't mix files and folders/msgs");
 320
 321 try_it_again:
 322
 323     strncpy (drft, buildsw ? m_maildir ("draft")
 324                           : m_draft (dfolder, NULL, NOUSE, &isdf), sizeof(drft));
 325
 326     /* Check if a draft already exists */
 327     if (!buildsw && stat (drft, &st) != NOTOK) {
 328         printf ("Draft \"%s\" exists (%ld bytes).", drft, (long) st.st_size);
 329         for (i = LISTDSW; i != YESW;) {
 330             if (!(argp = read_switch_multiword ("\nDisposition? ",
 331                                                 isdf ? aqrnl : aqrl)))
 332                 done (1);
 333             switch (i = smatch (*argp, isdf ? aqrnl : aqrl)) {
 334                 case NOSW:
 335                     done (0);
 336                 case NEWSW:
 337                     dmsg = NULL;
 338                     goto try_it_again;
 339                 case YESW:
 340                     break;
 341                 case LISTDSW:
 342                     showfile (++argp, drft);
 343                     break;
 344                 case REFILSW:
 345                     if (refile (++argp, drft) == 0)
 346                         i = YESW;
 347                     break;
 348                 default:
 349                     inform("say what?");
 350                     break;
 351             }
 352         }
 353     }
 354
 355     if (file) {
 356         /*
 357          * Forwarding a file.
 358          */
 359         anot = false;   /* don't want to annotate a file */
 360     } else {
 361         /*
 362          * Forwarding a message.
 363          */
 364         if (!msgs.size)
 365             app_msgarg(&msgs, "cur");
 366         if (!folder)
 367             folder = getfolder (1);
 368         maildir = m_maildir (folder);
 369
 370         if (chdir (maildir) == NOTOK)
 371             adios (maildir, "unable to change directory to");
 372
 373         /* read folder and create message structure */
 374         if (!(mp = folder_read (folder, 1)))
 375             die("unable to read folder %s", folder);
 376
 377         /* check for empty folder */
 378         if (mp->nummsg == 0)
 379             die("no messages in %s", folder);
 380
 381         /* parse all the message ranges/sequences and set SELECTED */
 382         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 383             if (!m_convert (mp, msgs.msgs[msgnum]))
 384                 done (1);
 385
 386         seq_setprev (mp);       /* set the previous sequence */
 387
 388         /*
 389          * Find the first message in our set and use it as the input
 390          * for the component scanner
 391          */
 392
 393         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 394             if (is_selected (mp, msgnum)) {
 395                 fwdmsg = mh_xstrdup(m_name(msgnum));
 396                 break;
 397             }
 398
 399         if (! fwdmsg)
 400             die("Unable to find input message");
 401     }
 402
 403     if (filter && access (filter, R_OK) == NOTOK)
 404         adios (filter, "unable to read");
 405
 406     /*
 407      * Open form (component) file.
 408      */
 409     if (digest) {
 410         if (issue == 0) {
 411             snprintf (buf, sizeof(buf), IFORMAT, digest);
 412             if (volume == 0
 413                     && (cp = context_find (buf))
 414                     && ((issue = atoi (cp)) < 0))
 415                 issue = 0;
 416             issue++;
 417         }
 418         if (volume == 0) {
 419             snprintf (buf, sizeof(buf), VFORMAT, digest);
 420             if ((cp = context_find (buf)) == NULL || (volume = atoi (cp)) <= 0)
 421                 volume = 1;
 422         }
 423         if (!form)
 424             form = digestcomps;
 425     } else {
 426         if (!form)
 427             form = forwcomps;
 428     }
 429
 430     dat[0] = digest ? issue : msgnum;
 431     dat[1] = volume;
 432     dat[2] = 0;
 433     dat[3] = outputlinelen;
 434     dat[4] = 0;
 435
 436
 437     in = build_form (form, digest, dat, from, to, cc, fcc, subject,
 438                      file ? file : fwdmsg);
 439
 440     if ((out = creat (drft, m_gmprot ())) == NOTOK)
 441         adios (drft, "unable to create");
 442
 443     /*
 444      * copy the components into the draft
 445      */
 446     cpydata (in, out, form, drft);
 447     close (in);
 448
 449     if (file) {
 450         /* just copy the file into the draft */
 451         if ((in = open (file, O_RDONLY)) == NOTOK)
 452             adios (file, "unable to open");
 453         cpydata (in, out, file, drft);
 454         close (in);
 455         close (out);
 456     } else {
 457         /*
 458          * If filter file is defined, then format the
 459          * messages into the draft using mhlproc.
 460          */
 461         if (filter)
 462             mhl_draft (out, digest, volume, issue, drft, filter, dashstuff);
 463         else if (mime)
 464             copy_mime_draft (out);
 465         else
 466             copy_draft (out, digest, drft, volume, issue, dashstuff);
 467         close (out);
 468
 469         if (digest) {
 470             snprintf (buf, sizeof(buf), IFORMAT, digest);
 471             context_replace (buf, mh_xstrdup(m_str(issue)));
 472             snprintf (buf, sizeof(buf), VFORMAT, digest);
 473             context_replace (buf, mh_xstrdup(m_str(volume)));
 474         }
 475
 476         context_replace (pfolder, folder);      /* update current folder   */
 477         seq_setcur (mp, mp->lowsel);            /* update current message  */
 478         seq_save (mp);                          /* synchronize sequences   */
 479         context_save ();                        /* save the context file   */
 480     }
 481
 482     if (nwhat)
 483         done (0);
 484     what_now (ed, nedit, NOUSE, drft, NULL, 0, mp,
 485         anot ? "Forwarded" : NULL, inplace, cwd, 0);
 486     done (1);
 487     return 1;
 488 }
 489
 490
 491 /*
 492  * Filter the messages you are forwarding, into the
 493  * draft calling the mhlproc, and reading its output
 494  * from a pipe.
 495  */
 496
 497 static void
 498 mhl_draft (int out, char *digest, int volume, int issue,
 499             char *file, char *filter, int dashstuff)
 500 {
 501     pid_t child_id;
 502     int msgnum, pd[2];
 503     char buf1[BUFSIZ];
 504     char buf2[BUFSIZ];
 505     char *program;
 506     struct msgs_array vec = { 0, 0, NULL };
 507
 508     if (pipe (pd) == NOTOK)
 509         adios ("pipe", "unable to create");
 510
 511     argsplit_msgarg(&vec, mhlproc, &program);
 512
 513     child_id = fork();
 514     switch (child_id) {
 515         case NOTOK:
 516             adios ("fork", "unable to");
 517
 518         case OK:
 519             close (pd[0]);
 520             dup2 (pd[1], 1);
 521             close (pd[1]);
 522
 523             app_msgarg(&vec, "-forwall");
 524             app_msgarg(&vec, "-form");
 525             app_msgarg(&vec, filter);
 526
 527             if (digest) {
 528                 app_msgarg(&vec, "-digest");
 529                 app_msgarg(&vec, digest);
 530                 app_msgarg(&vec, "-issue");
 531                 snprintf (buf1, sizeof(buf1), "%d", issue);
 532                 app_msgarg(&vec, buf1);
 533                 app_msgarg(&vec, "-volume");
 534                 snprintf (buf2, sizeof(buf2), "%d", volume);
 535                 app_msgarg(&vec, buf2);
 536             }
 537
 538             /*
 539              * Are we dashstuffing (quoting) the lines that begin
 540              * with `-'.  We use the mhl default (don't add any flag)
 541              * unless the user has specified a specific flag.
 542              */
 543             if (dashstuff > 0)
 544                 app_msgarg(&vec, "-dashstuffing");
 545             else if (dashstuff < 0)
 546                 app_msgarg(&vec, "-nodashstuffing");
 547
 548             for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 549                 if (is_selected (mp, msgnum))
 550                     app_msgarg(&vec, mh_xstrdup(m_name (msgnum)));
 551             }
 552
 553             app_msgarg(&vec, NULL);
 554
 555             execvp (program, vec.msgs);
 556             fprintf (stderr, "unable to exec ");
 557             perror (mhlproc);
 558             _exit(1);
 559
 560         default:
 561             close (pd[1]);
 562             cpydata (pd[0], out, vec.msgs[0], file);
 563             close (pd[0]);
 564             pidXwait(child_id, mhlproc);
 565             break;
 566     }
 567 }
 568
 569
 570 /*
 571  * Copy the messages into the draft.  The messages are
 572  * not filtered through the mhlproc.  Do dashstuffing if
 573  * necessary.
 574  */
 575
 576 static void
 577 copy_draft (int out, char *digest, char *file, int volume, int issue, int dashstuff)
 578 {
 579     int fd,i, msgcnt, msgnum;
 580     int len, buflen;
 581     char *bp, *msgnam;
 582     char buffer[BUFSIZ];
 583
 584     msgcnt = 1;
 585     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 586         if (is_selected (mp, msgnum)) {
 587             if (digest) {
 588                 strncpy (buffer, msgnum == mp->lowsel ? delim3 : delim4,
 589                         sizeof(buffer));
 590             } else {
 591                 /* Get buffer ready to go */
 592                 bp = buffer;
 593                 buflen = sizeof(buffer);
 594
 595                 strncpy (bp, "\n-------", buflen);
 596                 len = strlen (bp);
 597                 bp += len;
 598                 buflen -= len;
 599
 600                 if (msgnum == mp->lowsel) {
 601                     snprintf (bp, buflen, " Forwarded Message%s",
 602                         PLURALS(mp->numsel));
 603                 } else {
 604                     snprintf (bp, buflen, " Message %d", msgcnt);
 605                 }
 606                 len = strlen (bp);
 607                 bp += len;
 608                 buflen -= len;
 609
 610                 strncpy (bp, "\n\n", buflen);
 611             }
 612             if (write (out, buffer, strlen (buffer)) < 0) {
 613                 advise (drft, "write");
 614             }
 615
 616             if ((fd = open (msgnam = m_name (msgnum), O_RDONLY)) == NOTOK) {
 617                 admonish (msgnam, "unable to read message");
 618                 continue;
 619             }
 620
 621             /*
 622              * Copy the message.  Add RFC934 quoting (dashstuffing)
 623              * unless given the -nodashstuffing flag.
 624              */
 625             if (dashstuff >= 0)
 626                 cpydgst (fd, out, msgnam, file);
 627             else
 628                 cpydata (fd, out, msgnam, file);
 629
 630             close (fd);
 631             msgcnt++;
 632         }
 633     }
 634
 635     if (digest) {
 636         strncpy (buffer, delim4, sizeof(buffer));
 637     } else {
 638         snprintf (buffer, sizeof(buffer), "\n------- End of Forwarded Message%s\n",
 639                 PLURALS(mp->numsel));
 640     }
 641     if (write (out, buffer, strlen (buffer)) < 0) {
 642         advise (drft, "write");
 643     }
 644
 645     if (digest) {
 646         snprintf (buffer, sizeof(buffer), "End of %s Digest [Volume %d Issue %d]\n",
 647                 digest, volume, issue);
 648         i = strlen (buffer);
 649         for (bp = buffer + i; i > 1; i--)
 650             *bp++ = '*';
 651         *bp++ = '\n';
 652         *bp = 0;
 653         if (write (out, buffer, strlen (buffer)) < 0) {
 654             advise (drft, "write");
 655         }
 656     }
 657 }
 658
 659
 660 /*
 661  * Create a mhn composition file for forwarding message.
 662  */
 663
 664 static void
 665 copy_mime_draft (int out)
 666 {
 667     int msgnum;
 668     char buffer[BUFSIZ];
 669
 670     snprintf (buffer, sizeof(buffer), "#forw [forwarded message%s] +%s",
 671         PLURALS(mp->numsel), mp->foldpath);
 672     if (write (out, buffer, strlen (buffer)) < 0) {
 673         advise (drft, "write");
 674     }
 675     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 676         if (is_selected (mp, msgnum)) {
 677             snprintf (buffer, sizeof(buffer), " %s", m_name (msgnum));
 678             if (write (out, buffer, strlen (buffer)) < 0) {
 679                 advise (drft, "write");
 680             }
 681         }
 682     if (write (out, "\n", 1) < 0) {
 683         advise (drft, "write newline");
 684     }
 685 }