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

   1
   2 /*
   3  * forw.c -- forward a message, or group of messages.
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11 #include <fcntl.h>
  12 #include <h/tws.h>
  13 #include <h/utils.h>
  14
  15
  16 #define IFORMAT "digest-issue-%s"
  17 #define VFORMAT "digest-volume-%s"
  18
  19 #define FORW_SWITCHES \
  20     X("annotate", 0, ANNOSW) \
  21     X("noannotate", 0, NANNOSW) \
  22     X("draftfolder +folder", 0, DFOLDSW) \
  23     X("draftmessage msg", 0, DMSGSW) \
  24     X("nodraftfolder", 0, NDFLDSW) \
  25     X("editor editor", 0, EDITRSW) \
  26     X("noedit", 0, NEDITSW) \
  27     X("filter filterfile", 0, FILTSW) \
  28     X("form formfile", 0, FORMSW) \
  29     X("format", 5, FRMTSW) \
  30     X("noformat", 7, NFRMTSW) \
  31     X("inplace", 0, INPLSW) \
  32     X("noinplace", 0, NINPLSW) \
  33     X("mime", 0, MIMESW) \
  34     X("nomime", 0, NMIMESW) \
  35     X("digest list", 0, DGSTSW) \
  36     X("issue number", 0, ISSUESW) \
  37     X("volume number", 0, VOLUMSW) \
  38     X("whatnowproc program", 0, WHATSW) \
  39     X("nowhatnowproc", 0, NWHATSW) \
  40     X("dashstuffing", 0, BITSTUFFSW)          /* interface to mhl */ \
  41     X("nodashstuffing", 0, NBITSTUFFSW) \
  42     X("version", 0, VERSIONSW) \
  43     X("help", 0, HELPSW) \
  44     X("file file", 4, FILESW)                 /* interface from msh */ \
  45     X("build", 5, BILDSW)                     /* interface from mhe */ \
  46     X("from address", 0, FROMSW) \
  47     X("to address", 0, TOSW) \
  48     X("cc address", 0, CCSW) \
  49     X("subject text", 0, SUBJECTSW) \
  50     X("fcc mailbox", 0, FCCSW) \
  51     X("width columns", 0, WIDTHSW) \
  52
  53 #define X(sw, minchars, id) id,
  54 DEFINE_SWITCH_ENUM(FORW);
  55 #undef X
  56
  57 #define X(sw, minchars, id) { sw, minchars, id },
  58 DEFINE_SWITCH_ARRAY(FORW, switches);
  59 #undef X
  60
  61 #define DISPO_SWITCHES \
  62     X("quit", 0, NOSW) \
  63     X("replace", 0, YESW) \
  64     X("list", 0, LISTDSW) \
  65     X("refile +folder", 0, REFILSW) \
  66     X("new", 0, NEWSW) \
  67
  68 #define X(sw, minchars, id) id,
  69 DEFINE_SWITCH_ENUM(DISPO);
  70 #undef X
  71
  72 #define X(sw, minchars, id) { sw, minchars, id },
  73 DEFINE_SWITCH_ARRAY(DISPO, aqrnl);
  74 #undef X
  75
  76 static struct swit aqrl[] = {
  77     { "quit", 0, NOSW },
  78     { "replace", 0, YESW },
  79     { "list", 0, LISTDSW },
  80     { "refile +folder", 0, REFILSW },
  81     { NULL, 0, 0 }
  82 };
  83
  84 static char drft[BUFSIZ];
  85
  86 static char delim3[] =
  87     "\n------------------------------------------------------------\n\n";
  88 static char delim4[] = "\n------------------------------\n\n";
  89
  90
  91 static struct msgs *mp = NULL;          /* used a lot */
  92
  93
  94 /*
  95  * static prototypes
  96  */
  97 static void mhl_draft (int, char *, int, int, char *, char *, int);
  98 static void copy_draft (int, char *, char *, int, int, int);
  99 static void copy_mime_draft (int);
 100
 101
 102 int
 103 main (int argc, char **argv)
 104 {
 105     int anot = 0, inplace = 1, mime = 0;
 106     int issue = 0, volume = 0, dashstuff = 0;
 107     int nedit = 0, nwhat = 0, i, in;
 108     int out, isdf = 0, msgnum = 0;
 109     int outputlinelen = OUTPUTLINELEN;
 110     int dat[5];
 111     char *cp, *cwd, *maildir, *dfolder = NULL;
 112     char *dmsg = NULL, *digest = NULL, *ed = NULL;
 113     char *file = NULL, *filter = NULL, *folder = NULL, *fwdmsg = NULL;
 114     char *from = NULL, *to = NULL, *cc = NULL, *subject = NULL, *fcc = NULL;
 115     char *form = NULL, buf[BUFSIZ], value[10];
 116     char **argp, **arguments;
 117     struct stat st;
 118     struct msgs_array msgs = { 0, 0, NULL };
 119
 120     int buildsw = 0;
 121
 122     setlocale(LC_ALL, "");
 123     invo_name = r1bindex (argv[0], '/');
 124
 125     /* read user profile/context */
 126     context_read();
 127
 128     arguments = getarguments (invo_name, argc, argv, 1);
 129     argp = arguments;
 130
 131     while ((cp = *argp++)) {
 132         if (*cp == '-') {
 133             switch (smatch (++cp, switches)) {
 134                 case AMBIGSW:
 135                     ambigsw (cp, switches);
 136                     done (1);
 137                 case UNKWNSW:
 138                     adios (NULL, "-%s unknown", cp);
 139
 140                 case HELPSW:
 141                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 142                         invo_name);
 143                     print_help (buf, switches, 1);
 144                     done (0);
 145                 case VERSIONSW:
 146                     print_version(invo_name);
 147                     done (0);
 148
 149                 case ANNOSW:
 150                     anot++;
 151                     continue;
 152                 case NANNOSW:
 153                     anot = 0;
 154                     continue;
 155
 156                 case EDITRSW:
 157                     if (!(ed = *argp++) || *ed == '-')
 158                         adios (NULL, "missing argument to %s", argp[-2]);
 159                     nedit = 0;
 160                     continue;
 161                 case NEDITSW:
 162                     nedit++;
 163                     continue;
 164
 165                 case WHATSW:
 166                     if (!(whatnowproc = *argp++) || *whatnowproc == '-')
 167                         adios (NULL, "missing argument to %s", argp[-2]);
 168                     nwhat = 0;
 169                     continue;
 170                 case BILDSW:
 171                     buildsw++;  /* fall... */
 172                 case NWHATSW:
 173                     nwhat++;
 174                     continue;
 175
 176                 case FILESW:
 177                     if (file)
 178                         adios (NULL, "only one file at a time!");
 179                     if (!(cp = *argp++) || *cp == '-')
 180                         adios (NULL, "missing argument to %s", argp[-2]);
 181                     file = path (cp, TFILE);
 182                     continue;
 183                 case FILTSW:
 184                     if (!(cp = *argp++) || *cp == '-')
 185                         adios (NULL, "missing argument to %s", argp[-2]);
 186                     filter = getcpy (etcpath (cp));
 187                     mime = 0;
 188                     continue;
 189                 case FORMSW:
 190                     if (!(form = *argp++) || *form == '-')
 191                         adios (NULL, "missing argument to %s", argp[-2]);
 192                     continue;
 193
 194                 case FRMTSW:
 195                     filter = getcpy (etcpath (mhlforward));
 196                     continue;
 197                 case NFRMTSW:
 198                     filter = NULL;
 199                     continue;
 200
 201                 case INPLSW:
 202                     inplace++;
 203                     continue;
 204                 case NINPLSW:
 205                     inplace = 0;
 206                     continue;
 207
 208                 case MIMESW:
 209                     mime++;
 210                     filter = NULL;
 211                     continue;
 212                 case NMIMESW:
 213                     mime = 0;
 214                     continue;
 215
 216                 case DGSTSW:
 217                     if (!(cp = *argp++) || *cp == '-')
 218                         adios (NULL, "missing argument to %s", argp[-2]);
 219                     digest = getcpy(cp);
 220                     mime = 0;
 221                     continue;
 222                 case ISSUESW:
 223                     if (!(cp = *argp++) || *cp == '-')
 224                         adios (NULL, "missing argument to %s", argp[-2]);
 225                     if ((issue = atoi (cp)) < 1)
 226                         adios (NULL, "bad argument %s %s", argp[-2], cp);
 227                     continue;
 228                 case VOLUMSW:
 229                     if (!(cp = *argp++) || *cp == '-')
 230                         adios (NULL, "missing argument to %s", argp[-2]);
 231                     if ((volume = atoi (cp)) < 1)
 232                         adios (NULL, "bad argument %s %s", argp[-2], cp);
 233                     continue;
 234
 235                 case DFOLDSW:
 236                     if (dfolder)
 237                         adios (NULL, "only one draft folder at a time!");
 238                     if (!(cp = *argp++) || *cp == '-')
 239                         adios (NULL, "missing argument to %s", argp[-2]);
 240                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 241                                     *cp != '@' ? TFOLDER : TSUBCWF);
 242                     continue;
 243                 case DMSGSW:
 244                     if (dmsg)
 245                         adios (NULL, "only one draft message at a time!");
 246                     if (!(dmsg = *argp++) || *dmsg == '-')
 247                         adios (NULL, "missing argument to %s", argp[-2]);
 248                     continue;
 249                 case NDFLDSW:
 250                     dfolder = NULL;
 251                     isdf = NOTOK;
 252                     continue;
 253
 254                 case BITSTUFFSW:
 255                     dashstuff = 1;      /* trinary logic */
 256                     continue;
 257                 case NBITSTUFFSW:
 258                     dashstuff = -1;     /* trinary logic */
 259                     continue;
 260
 261                 case FROMSW:
 262                     if (!(cp = *argp++) || *cp == '-')
 263                         adios (NULL, "missing argument to %s", argp[-2]);
 264                     from = addlist(from, cp);
 265                     continue;
 266                 case TOSW:
 267                     if (!(cp = *argp++) || *cp == '-')
 268                         adios (NULL, "missing argument to %s", argp[-2]);
 269                     to = addlist(to, cp);
 270                     continue;
 271                 case CCSW:
 272                     if (!(cp = *argp++) || *cp == '-')
 273                         adios (NULL, "missing argument to %s", argp[-2]);
 274                     cc = addlist(cc, cp);
 275                     continue;
 276                 case FCCSW:
 277                     if (!(cp = *argp++) || *cp == '-')
 278                         adios (NULL, "missing argument to %s", argp[-2]);
 279                     fcc = addlist(fcc, cp);
 280                     continue;
 281                 case SUBJECTSW:
 282                     if (!(cp = *argp++) || *cp == '-')
 283                         adios (NULL, "missing argument to %s", argp[-2]);
 284                     subject = getcpy(cp);
 285                     continue;
 286
 287                 case WIDTHSW:
 288                     if (!(cp = *argp++) || *cp == '-')
 289                         adios (NULL, "missing argument to %s", argp[-2]);
 290                     if ((outputlinelen = atoi(cp)) < 10)
 291                         adios (NULL, "impossible width %d", outputlinelen);
 292                     continue;
 293             }
 294         }
 295         if (*cp == '+' || *cp == '@') {
 296             if (folder)
 297                 adios (NULL, "only one folder at a time!");
 298             else
 299                 folder = pluspath (cp);
 300         } else {
 301             app_msgarg(&msgs, cp);
 302         }
 303     }
 304
 305     cwd = getcpy (pwd ());
 306
 307     if (!context_find ("path"))
 308         free (path ("./", TFOLDER));
 309     if (file && (msgs.size || folder))
 310         adios (NULL, "can't mix files and folders/msgs");
 311
 312 try_it_again:
 313
 314     strncpy (drft, buildsw ? m_maildir ("draft")
 315                           : m_draft (dfolder, NULL, NOUSE, &isdf), sizeof(drft));
 316
 317     /* Check if a draft already exists */
 318     if (!buildsw && stat (drft, &st) != NOTOK) {
 319         printf ("Draft \"%s\" exists (%ld bytes).", drft, (long) st.st_size);
 320         for (i = LISTDSW; i != YESW;) {
 321             if (!(argp = getans ("\nDisposition? ", isdf ? aqrnl : aqrl)))
 322                 done (1);
 323             switch (i = smatch (*argp, isdf ? aqrnl : aqrl)) {
 324                 case NOSW:
 325                     done (0);
 326                 case NEWSW:
 327                     dmsg = NULL;
 328                     goto try_it_again;
 329                 case YESW:
 330                     break;
 331                 case LISTDSW:
 332                     showfile (++argp, drft);
 333                     break;
 334                 case REFILSW:
 335                     if (refile (++argp, drft) == 0)
 336                         i = YESW;
 337                     break;
 338                 default:
 339                     advise (NULL, "say what?");
 340                     break;
 341             }
 342         }
 343     }
 344
 345     if (file) {
 346         /*
 347          * Forwarding a file.
 348          */
 349         anot = 0;       /* don't want to annotate a file */
 350     } else {
 351         /*
 352          * Forwarding a message.
 353          */
 354         if (!msgs.size)
 355             app_msgarg(&msgs, "cur");
 356         if (!folder)
 357             folder = getfolder (1);
 358         maildir = m_maildir (folder);
 359
 360         if (chdir (maildir) == NOTOK)
 361             adios (maildir, "unable to change directory to");
 362
 363         /* read folder and create message structure */
 364         if (!(mp = folder_read (folder, 1)))
 365             adios (NULL, "unable to read folder %s", folder);
 366
 367         /* check for empty folder */
 368         if (mp->nummsg == 0)
 369             adios (NULL, "no messages in %s", folder);
 370
 371         /* parse all the message ranges/sequences and set SELECTED */
 372         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 373             if (!m_convert (mp, msgs.msgs[msgnum]))
 374                 done (1);
 375
 376         seq_setprev (mp);       /* set the previous sequence */
 377
 378         /*
 379          * Find the first message in our set and use it as the input
 380          * for the component scanner
 381          */
 382
 383         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 384             if (is_selected (mp, msgnum)) {
 385                 fwdmsg = strdup(m_name(msgnum));
 386                 break;
 387             }
 388
 389         if (! fwdmsg)
 390             adios (NULL, "Unable to find input message");
 391     }
 392
 393     if (filter && access (filter, R_OK) == NOTOK)
 394         adios (filter, "unable to read");
 395
 396     /*
 397      * Open form (component) file.
 398      */
 399     if (digest) {
 400         if (issue == 0) {
 401             snprintf (buf, sizeof(buf), IFORMAT, digest);
 402             if (volume == 0
 403                     && (cp = context_find (buf))
 404                     && ((issue = atoi (cp)) < 0))
 405                 issue = 0;
 406             issue++;
 407         }
 408         if (volume == 0) {
 409             snprintf (buf, sizeof(buf), VFORMAT, digest);
 410             if ((cp = context_find (buf)) == NULL || (volume = atoi (cp)) <= 0)
 411                 volume = 1;
 412         }
 413         if (!form)
 414             form = digestcomps;
 415     } else {
 416         if (!form)
 417             form = forwcomps;
 418     }
 419
 420     dat[0] = digest ? issue : msgnum;
 421     dat[1] = volume;
 422     dat[2] = 0;
 423     dat[3] = outputlinelen;
 424     dat[4] = 0;
 425
 426
 427     in = build_form (form, digest, dat, from, to, cc, fcc, subject,
 428                      file ? file : fwdmsg);
 429
 430     if ((out = creat (drft, m_gmprot ())) == NOTOK)
 431         adios (drft, "unable to create");
 432
 433     /*
 434      * copy the components into the draft
 435      */
 436     cpydata (in, out, form, drft);
 437     close (in);
 438
 439     if (file) {
 440         /* just copy the file into the draft */
 441         if ((in = open (file, O_RDONLY)) == NOTOK)
 442             adios (file, "unable to open");
 443         cpydata (in, out, file, drft);
 444         close (in);
 445         close (out);
 446     } else {
 447         /*
 448          * If filter file is defined, then format the
 449          * messages into the draft using mhlproc.
 450          */
 451         if (filter)
 452             mhl_draft (out, digest, volume, issue, drft, filter, dashstuff);
 453         else if (mime)
 454             copy_mime_draft (out);
 455         else
 456             copy_draft (out, digest, drft, volume, issue, dashstuff);
 457         close (out);
 458
 459         if (digest) {
 460             snprintf (buf, sizeof(buf), IFORMAT, digest);
 461             snprintf (value, sizeof(value), "%d", issue);
 462             context_replace (buf, getcpy (value));
 463             snprintf (buf, sizeof(buf), VFORMAT, digest);
 464             snprintf (value, sizeof(value), "%d", volume);
 465             context_replace (buf, getcpy (value));
 466         }
 467
 468         context_replace (pfolder, folder);      /* update current folder   */
 469         seq_setcur (mp, mp->lowsel);            /* update current message  */
 470         seq_save (mp);                          /* synchronize sequences   */
 471         context_save ();                        /* save the context file   */
 472     }
 473
 474     if (nwhat)
 475         done (0);
 476     what_now (ed, nedit, NOUSE, drft, NULL, 0, mp,
 477         anot ? "Forwarded" : NULL, inplace, cwd, 0);
 478     done (1);
 479     return 1;
 480 }
 481
 482
 483 /*
 484  * Filter the messages you are forwarding, into the
 485  * draft calling the mhlproc, and reading its output
 486  * from a pipe.
 487  */
 488
 489 static void
 490 mhl_draft (int out, char *digest, int volume, int issue,
 491             char *file, char *filter, int dashstuff)
 492 {
 493     pid_t child_id;
 494     int i, msgnum, pd[2];
 495     char buf1[BUFSIZ];
 496     char buf2[BUFSIZ];
 497     char *program;
 498     struct msgs_array vec = { 0, 0, NULL };
 499
 500     if (pipe (pd) == NOTOK)
 501         adios ("pipe", "unable to create");
 502
 503     argsplit_msgarg(&vec, mhlproc, &program);
 504
 505     for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 506         sleep (5);
 507
 508     switch (child_id) {
 509         case NOTOK:
 510             adios ("fork", "unable to");
 511
 512         case OK:
 513             close (pd[0]);
 514             dup2 (pd[1], 1);
 515             close (pd[1]);
 516
 517             i = 1;
 518             app_msgarg(&vec, "-forwall");
 519             app_msgarg(&vec, "-form");
 520             app_msgarg(&vec, filter);
 521
 522             if (digest) {
 523                 app_msgarg(&vec, "-digest");
 524                 app_msgarg(&vec, digest);
 525                 app_msgarg(&vec, "-issue");
 526                 snprintf (buf1, sizeof(buf1), "%d", issue);
 527                 app_msgarg(&vec, buf1);
 528                 app_msgarg(&vec, "-volume");
 529                 snprintf (buf2, sizeof(buf2), "%d", volume);
 530                 app_msgarg(&vec, buf2);
 531             }
 532
 533             /*
 534              * Are we dashstuffing (quoting) the lines that begin
 535              * with `-'.  We use the mhl default (don't add any flag)
 536              * unless the user has specified a specific flag.
 537              */
 538             if (dashstuff > 0)
 539                 app_msgarg(&vec, "-dashstuffing");
 540             else if (dashstuff < 0)
 541                 app_msgarg(&vec, "-nodashstuffing");
 542
 543             for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 544                 if (is_selected (mp, msgnum))
 545                     app_msgarg(&vec, getcpy (m_name (msgnum)));
 546             }
 547
 548             app_msgarg(&vec, NULL);
 549
 550             execvp (program, vec.msgs);
 551             fprintf (stderr, "unable to exec ");
 552             perror (mhlproc);
 553             _exit (-1);
 554
 555         default:
 556             close (pd[1]);
 557             cpydata (pd[0], out, vec.msgs[0], file);
 558             close (pd[0]);
 559             pidXwait(child_id, mhlproc);
 560             break;
 561     }
 562 }
 563
 564
 565 /*
 566  * Copy the messages into the draft.  The messages are
 567  * not filtered through the mhlproc.  Do dashstuffing if
 568  * necessary.
 569  */
 570
 571 static void
 572 copy_draft (int out, char *digest, char *file, int volume, int issue, int dashstuff)
 573 {
 574     int fd,i, msgcnt, msgnum;
 575     int len, buflen;
 576     register char *bp, *msgnam;
 577     char buffer[BUFSIZ];
 578
 579     msgcnt = 1;
 580     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 581         if (is_selected (mp, msgnum)) {
 582             if (digest) {
 583                 strncpy (buffer, msgnum == mp->lowsel ? delim3 : delim4,
 584                         sizeof(buffer));
 585             } else {
 586                 /* Get buffer ready to go */
 587                 bp = buffer;
 588                 buflen = sizeof(buffer);
 589
 590                 strncpy (bp, "\n-------", buflen);
 591                 len = strlen (bp);
 592                 bp += len;
 593                 buflen -= len;
 594
 595                 if (msgnum == mp->lowsel) {
 596                     snprintf (bp, buflen, " Forwarded Message%s",
 597                         mp->numsel > 1 ? "s" : "");
 598                 } else {
 599                     snprintf (bp, buflen, " Message %d", msgcnt);
 600                 }
 601                 len = strlen (bp);
 602                 bp += len;
 603                 buflen -= len;
 604
 605                 strncpy (bp, "\n\n", buflen);
 606             }
 607             write (out, buffer, strlen (buffer));
 608
 609             if ((fd = open (msgnam = m_name (msgnum), O_RDONLY)) == NOTOK) {
 610                 admonish (msgnam, "unable to read message");
 611                 continue;
 612             }
 613
 614             /*
 615              * Copy the message.  Add RFC934 quoting (dashstuffing)
 616              * unless given the -nodashstuffing flag.
 617              */
 618             if (dashstuff >= 0)
 619                 cpydgst (fd, out, msgnam, file);
 620             else
 621                 cpydata (fd, out, msgnam, file);
 622
 623             close (fd);
 624             msgcnt++;
 625         }
 626     }
 627
 628     if (digest) {
 629         strncpy (buffer, delim4, sizeof(buffer));
 630     } else {
 631         snprintf (buffer, sizeof(buffer), "\n------- End of Forwarded Message%s\n",
 632                 mp->numsel > 1 ? "s" : "");
 633     }
 634     write (out, buffer, strlen (buffer));
 635
 636     if (digest) {
 637         snprintf (buffer, sizeof(buffer), "End of %s Digest [Volume %d Issue %d]\n",
 638                 digest, volume, issue);
 639         i = strlen (buffer);
 640         for (bp = buffer + i; i > 1; i--)
 641             *bp++ = '*';
 642         *bp++ = '\n';
 643         *bp = 0;
 644         write (out, buffer, strlen (buffer));
 645     }
 646 }
 647
 648
 649 /*
 650  * Create a mhn composition file for forwarding message.
 651  */
 652
 653 static void
 654 copy_mime_draft (int out)
 655 {
 656     int msgnum;
 657     char buffer[BUFSIZ];
 658
 659     snprintf (buffer, sizeof(buffer), "#forw [forwarded message%s] +%s",
 660         mp->numsel == 1 ? "" : "s", mp->foldpath);
 661     write (out, buffer, strlen (buffer));
 662     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 663         if (is_selected (mp, msgnum)) {
 664             snprintf (buffer, sizeof(buffer), " %s", m_name (msgnum));
 665             write (out, buffer, strlen (buffer));
 666         }
 667     write (out, "\n", 1);
 668 }