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 static struct swit switches[] = {
  20 #define ANNOSW                 0
  21     { "annotate", 0 },
  22 #define NANNOSW                1
  23     { "noannotate", 0 },
  24 #define DFOLDSW                2
  25     { "draftfolder +folder", 0 },
  26 #define DMSGSW                 3
  27     { "draftmessage msg", 0 },
  28 #define NDFLDSW                4
  29     { "nodraftfolder", 0 },
  30 #define EDITRSW                5
  31     { "editor editor", 0 },
  32 #define NEDITSW                6
  33     { "noedit", 0 },
  34 #define FILTSW                 7
  35     { "filter filterfile", 0 },
  36 #define FORMSW                 8
  37     { "form formfile", 0 },
  38 #define FRMTSW                 9
  39     { "format", 5 },
  40 #define NFRMTSW               10
  41     { "noformat", 7 },
  42 #define INPLSW                11
  43     { "inplace", 0 },
  44 #define NINPLSW               12
  45     { "noinplace", 0 },
  46 #define MIMESW                13
  47     { "mime", 0 },
  48 #define NMIMESW               14
  49     { "nomime", 0 },
  50 #define DGSTSW                15
  51     { "digest list", 0 },
  52 #define ISSUESW               16
  53     { "issue number", 0 },
  54 #define VOLUMSW               17
  55     { "volume number", 0 },
  56 #define WHATSW                18
  57     { "whatnowproc program", 0 },
  58 #define NWHATSW               19
  59     { "nowhatnowproc", 0 },
  60 #define BITSTUFFSW            20
  61     { "dashstuffing", 0 },              /* interface to mhl */
  62 #define NBITSTUFFSW           21
  63     { "nodashstuffing", 0 },
  64 #define VERSIONSW             22
  65     { "version", 0 },
  66 #define HELPSW                23
  67     { "help", 0 },
  68 #define FILESW                24
  69     { "file file", 4 },                 /* interface from msh */
  70 #define BILDSW                25
  71     { "build", 5 },                     /* interface from mhe */
  72 #define FROMSW                26
  73     { "from address", 0 },
  74 #define TOSW                  27
  75     { "to address", 0 },
  76 #define CCSW                  28
  77     { "cc address", 0 },
  78 #define SUBJECTSW             29
  79     { "subject text", 0 },
  80 #define FCCSW                 30
  81     { "fcc mailbox", 0 },
  82 #define WIDTHSW               31
  83     { "width columns", 0 },
  84     { NULL, 0 }
  85 };
  86
  87 static struct swit aqrnl[] = {
  88 #define NOSW         0
  89     { "quit", 0 },
  90 #define YESW         1
  91     { "replace", 0 },
  92 #define LISTDSW      2
  93     { "list", 0 },
  94 #define REFILSW      3
  95     { "refile +folder", 0 },
  96 #define NEWSW        4
  97     { "new", 0 },
  98     { NULL, 0 }
  99 };
 100
 101 static struct swit aqrl[] = {
 102     { "quit", 0 },
 103     { "replace", 0 },
 104     { "list", 0 },
 105     { "refile +folder", 0 },
 106     { NULL, 0 }
 107 };
 108
 109 static char drft[BUFSIZ];
 110
 111 static char delim3[] =
 112     "\n------------------------------------------------------------\n\n";
 113 static char delim4[] = "\n------------------------------\n\n";
 114
 115
 116 static struct msgs *mp = NULL;          /* used a lot */
 117
 118
 119 /*
 120  * static prototypes
 121  */
 122 static void mhl_draft (int, char *, int, int, char *, char *, int);
 123 static void copy_draft (int, char *, char *, int, int, int);
 124 static void copy_mime_draft (int);
 125
 126
 127 int
 128 main (int argc, char **argv)
 129 {
 130     int msgp = 0, anot = 0, inplace = 1, mime = 0;
 131     int issue = 0, volume = 0, dashstuff = 0;
 132     int nedit = 0, nwhat = 0, i, in;
 133     int out, isdf = 0, msgnum = 0;
 134     int outputlinelen = OUTPUTLINELEN;
 135     int dat[5];
 136     char *cp, *cwd, *maildir, *dfolder = NULL;
 137     char *dmsg = NULL, *digest = NULL, *ed = NULL;
 138     char *file = NULL, *filter = NULL, *folder = NULL, *fwdmsg = NULL;
 139     char *from = NULL, *to = NULL, *cc = NULL, *subject = NULL, *fcc = NULL;
 140     char *form = NULL, buf[BUFSIZ], value[10];
 141     char **argp, **arguments, *msgs[MAXARGS];
 142     struct stat st;
 143
 144     int buildsw = 0;
 145
 146 #ifdef LOCALE
 147     setlocale(LC_ALL, "");
 148 #endif
 149     invo_name = r1bindex (argv[0], '/');
 150
 151     /* read user profile/context */
 152     context_read();
 153
 154     arguments = getarguments (invo_name, argc, argv, 1);
 155     argp = arguments;
 156
 157     while ((cp = *argp++)) {
 158         if (*cp == '-') {
 159             switch (smatch (++cp, switches)) {
 160                 case AMBIGSW:
 161                     ambigsw (cp, switches);
 162                     done (1);
 163                 case UNKWNSW:
 164                     adios (NULL, "-%s unknown", cp);
 165
 166                 case HELPSW:
 167                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 168                         invo_name);
 169                     print_help (buf, switches, 1);
 170                     done (1);
 171                 case VERSIONSW:
 172                     print_version(invo_name);
 173                     done (1);
 174
 175                 case ANNOSW:
 176                     anot++;
 177                     continue;
 178                 case NANNOSW:
 179                     anot = 0;
 180                     continue;
 181
 182                 case EDITRSW:
 183                     if (!(ed = *argp++) || *ed == '-')
 184                         adios (NULL, "missing argument to %s", argp[-2]);
 185                     nedit = 0;
 186                     continue;
 187                 case NEDITSW:
 188                     nedit++;
 189                     continue;
 190
 191                 case WHATSW:
 192                     if (!(whatnowproc = *argp++) || *whatnowproc == '-')
 193                         adios (NULL, "missing argument to %s", argp[-2]);
 194                     nwhat = 0;
 195                     continue;
 196                 case BILDSW:
 197                     buildsw++;  /* fall... */
 198                 case NWHATSW:
 199                     nwhat++;
 200                     continue;
 201
 202                 case FILESW:
 203                     if (file)
 204                         adios (NULL, "only one file at a time!");
 205                     if (!(cp = *argp++) || *cp == '-')
 206                         adios (NULL, "missing argument to %s", argp[-2]);
 207                     file = path (cp, TFILE);
 208                     continue;
 209                 case FILTSW:
 210                     if (!(cp = *argp++) || *cp == '-')
 211                         adios (NULL, "missing argument to %s", argp[-2]);
 212                     filter = getcpy (etcpath (cp));
 213                     mime = 0;
 214                     continue;
 215                 case FORMSW:
 216                     if (!(form = *argp++) || *form == '-')
 217                         adios (NULL, "missing argument to %s", argp[-2]);
 218                     continue;
 219
 220                 case FRMTSW:
 221                     filter = getcpy (etcpath (mhlforward));
 222                     continue;
 223                 case NFRMTSW:
 224                     filter = NULL;
 225                     continue;
 226
 227                 case INPLSW:
 228                     inplace++;
 229                     continue;
 230                 case NINPLSW:
 231                     inplace = 0;
 232                     continue;
 233
 234                 case MIMESW:
 235                     mime++;
 236                     filter = NULL;
 237                     continue;
 238                 case NMIMESW:
 239                     mime = 0;
 240                     continue;
 241
 242                 case DGSTSW:
 243                     if (!(cp = *argp++) || *cp == '-')
 244                         adios (NULL, "missing argument to %s", argp[-2]);
 245                     digest = getcpy(cp);
 246                     mime = 0;
 247                     continue;
 248                 case ISSUESW:
 249                     if (!(cp = *argp++) || *cp == '-')
 250                         adios (NULL, "missing argument to %s", argp[-2]);
 251                     if ((issue = atoi (cp)) < 1)
 252                         adios (NULL, "bad argument %s %s", argp[-2], cp);
 253                     continue;
 254                 case VOLUMSW:
 255                     if (!(cp = *argp++) || *cp == '-')
 256                         adios (NULL, "missing argument to %s", argp[-2]);
 257                     if ((volume = atoi (cp)) < 1)
 258                         adios (NULL, "bad argument %s %s", argp[-2], cp);
 259                     continue;
 260
 261                 case DFOLDSW:
 262                     if (dfolder)
 263                         adios (NULL, "only one draft folder at a time!");
 264                     if (!(cp = *argp++) || *cp == '-')
 265                         adios (NULL, "missing argument to %s", argp[-2]);
 266                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 267                                     *cp != '@' ? TFOLDER : TSUBCWF);
 268                     continue;
 269                 case DMSGSW:
 270                     if (dmsg)
 271                         adios (NULL, "only one draft message at a time!");
 272                     if (!(dmsg = *argp++) || *dmsg == '-')
 273                         adios (NULL, "missing argument to %s", argp[-2]);
 274                     continue;
 275                 case NDFLDSW:
 276                     dfolder = NULL;
 277                     isdf = NOTOK;
 278                     continue;
 279
 280                 case BITSTUFFSW:
 281                     dashstuff = 1;      /* trinary logic */
 282                     continue;
 283                 case NBITSTUFFSW:
 284                     dashstuff = -1;     /* trinary logic */
 285                     continue;
 286
 287                 case FROMSW:
 288                     if (!(cp = *argp++) || *cp == '-')
 289                         adios (NULL, "missing argument to %s", argp[-2]);
 290                     from = addlist(from, cp);
 291                     continue;
 292                 case TOSW:
 293                     if (!(cp = *argp++) || *cp == '-')
 294                         adios (NULL, "missing argument to %s", argp[-2]);
 295                     to = addlist(to, cp);
 296                     continue;
 297                 case CCSW:
 298                     if (!(cp = *argp++) || *cp == '-')
 299                         adios (NULL, "missing argument to %s", argp[-2]);
 300                     cc = addlist(cc, cp);
 301                     continue;
 302                 case FCCSW:
 303                     if (!(cp = *argp++) || *cp == '-')
 304                         adios (NULL, "missing argument to %s", argp[-2]);
 305                     fcc = addlist(fcc, cp);
 306                     continue;
 307                 case SUBJECTSW:
 308                     if (!(cp = *argp++) || *cp == '-')
 309                         adios (NULL, "missing argument to %s", argp[-2]);
 310                     subject = getcpy(cp);
 311                     continue;
 312
 313                 case WIDTHSW:
 314                     if (!(cp = *argp++) || *cp == '-')
 315                         adios (NULL, "missing argument to %s", argp[-2]);
 316                     if ((outputlinelen = atoi(cp)) < 10)
 317                         adios (NULL, "impossible width %d", outputlinelen);
 318                     continue;
 319             }
 320         }
 321         if (*cp == '+' || *cp == '@') {
 322             if (folder)
 323                 adios (NULL, "only one folder at a time!");
 324             else
 325                 folder = pluspath (cp);
 326         } else {
 327             msgs[msgp++] = cp;
 328         }
 329     }
 330
 331     cwd = getcpy (pwd ());
 332
 333     if (!context_find ("path"))
 334         free (path ("./", TFOLDER));
 335     if (file && (msgp || folder))
 336         adios (NULL, "can't mix files and folders/msgs");
 337
 338 try_it_again:
 339
 340     strncpy (drft, buildsw ? m_maildir ("draft")
 341                           : m_draft (dfolder, NULL, NOUSE, &isdf), sizeof(drft));
 342
 343     /* Check if a draft already exists */
 344     if (!buildsw && stat (drft, &st) != NOTOK) {
 345         printf ("Draft \"%s\" exists (%ld bytes).", drft, (long) st.st_size);
 346         for (i = LISTDSW; i != YESW;) {
 347             if (!(argp = getans ("\nDisposition? ", isdf ? aqrnl : aqrl)))
 348                 done (1);
 349             switch (i = smatch (*argp, isdf ? aqrnl : aqrl)) {
 350                 case NOSW:
 351                     done (0);
 352                 case NEWSW:
 353                     dmsg = NULL;
 354                     goto try_it_again;
 355                 case YESW:
 356                     break;
 357                 case LISTDSW:
 358                     showfile (++argp, drft);
 359                     break;
 360                 case REFILSW:
 361                     if (refile (++argp, drft) == 0)
 362                         i = YESW;
 363                     break;
 364                 default:
 365                     advise (NULL, "say what?");
 366                     break;
 367             }
 368         }
 369     }
 370
 371     if (file) {
 372         /*
 373          * Forwarding a file.
 374          */
 375         anot = 0;       /* don't want to annotate a file */
 376     } else {
 377         /*
 378          * Forwarding a message.
 379          */
 380         if (!msgp)
 381             msgs[msgp++] = "cur";
 382         if (!folder)
 383             folder = getfolder (1);
 384         maildir = m_maildir (folder);
 385
 386         if (chdir (maildir) == NOTOK)
 387             adios (maildir, "unable to change directory to");
 388
 389         /* read folder and create message structure */
 390         if (!(mp = folder_read (folder)))
 391             adios (NULL, "unable to read folder %s", folder);
 392
 393         /* check for empty folder */
 394         if (mp->nummsg == 0)
 395             adios (NULL, "no messages in %s", folder);
 396
 397         /* parse all the message ranges/sequences and set SELECTED */
 398         for (msgnum = 0; msgnum < msgp; msgnum++)
 399             if (!m_convert (mp, msgs[msgnum]))
 400                 done (1);
 401         seq_setprev (mp);       /* set the previous sequence */
 402
 403         /*
 404          * Find the first message in our set and use it as the input
 405          * for the component scanner
 406          */
 407
 408         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 409             if (is_selected (mp, msgnum)) {
 410                 fwdmsg = strdup(m_name(msgnum));
 411                 break;
 412             }
 413
 414         if (! fwdmsg)
 415             adios (NULL, "Unable to find input message");
 416     }
 417
 418     if (filter && access (filter, R_OK) == NOTOK)
 419         adios (filter, "unable to read");
 420
 421     /*
 422      * Open form (component) file.
 423      */
 424     if (digest) {
 425         if (issue == 0) {
 426             snprintf (buf, sizeof(buf), IFORMAT, digest);
 427             if (volume == 0
 428                     && (cp = context_find (buf))
 429                     && ((issue = atoi (cp)) < 0))
 430                 issue = 0;
 431             issue++;
 432         }
 433         if (volume == 0) {
 434             snprintf (buf, sizeof(buf), VFORMAT, digest);
 435             if ((cp = context_find (buf)) == NULL || (volume = atoi (cp)) <= 0)
 436                 volume = 1;
 437         }
 438         if (!form)
 439             form = digestcomps;
 440     } else {
 441         if (!form)
 442             form = forwcomps;
 443     }
 444
 445     dat[0] = digest ? issue : msgnum;
 446     dat[1] = volume;
 447     dat[2] = 0;
 448     dat[3] = outputlinelen;
 449     dat[4] = 0;
 450
 451
 452     in = build_form (form, digest, dat, from, to, cc, fcc, subject,
 453                      file ? file : fwdmsg);
 454
 455     if ((out = creat (drft, m_gmprot ())) == NOTOK)
 456         adios (drft, "unable to create");
 457
 458     /*
 459      * copy the components into the draft
 460      */
 461     cpydata (in, out, form, drft);
 462     close (in);
 463
 464     if (file) {
 465         /* just copy the file into the draft */
 466         if ((in = open (file, O_RDONLY)) == NOTOK)
 467             adios (file, "unable to open");
 468         cpydata (in, out, file, drft);
 469         close (in);
 470         close (out);
 471     } else {
 472         /*
 473          * If filter file is defined, then format the
 474          * messages into the draft using mhlproc.
 475          */
 476         if (filter)
 477             mhl_draft (out, digest, volume, issue, drft, filter, dashstuff);
 478         else if (mime)
 479             copy_mime_draft (out);
 480         else
 481             copy_draft (out, digest, drft, volume, issue, dashstuff);
 482         close (out);
 483
 484         if (digest) {
 485             snprintf (buf, sizeof(buf), IFORMAT, digest);
 486             snprintf (value, sizeof(value), "%d", issue);
 487             context_replace (buf, getcpy (value));
 488             snprintf (buf, sizeof(buf), VFORMAT, digest);
 489             snprintf (value, sizeof(value), "%d", volume);
 490             context_replace (buf, getcpy (value));
 491         }
 492
 493         context_replace (pfolder, folder);      /* update current folder   */
 494         seq_setcur (mp, mp->lowsel);            /* update current message  */
 495         seq_save (mp);                          /* synchronize sequences   */
 496         context_save ();                        /* save the context file   */
 497     }
 498
 499     if (nwhat)
 500         done (0);
 501     what_now (ed, nedit, NOUSE, drft, NULL, 0, mp,
 502         anot ? "Forwarded" : NULL, inplace, cwd, 0);
 503     done (1);
 504     return 1;
 505 }
 506
 507
 508 /*
 509  * Filter the messages you are forwarding, into the
 510  * draft calling the mhlproc, and reading its output
 511  * from a pipe.
 512  */
 513
 514 static void
 515 mhl_draft (int out, char *digest, int volume, int issue,
 516             char *file, char *filter, int dashstuff)
 517 {
 518     pid_t child_id;
 519     int i, msgnum, pd[2];
 520     char *vec[MAXARGS];
 521     char buf1[BUFSIZ];
 522     char buf2[BUFSIZ];
 523
 524     if (pipe (pd) == NOTOK)
 525         adios ("pipe", "unable to create");
 526
 527     vec[0] = r1bindex (mhlproc, '/');
 528
 529     for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 530         sleep (5);
 531     switch (child_id) {
 532         case NOTOK:
 533             adios ("fork", "unable to");
 534
 535         case OK:
 536             close (pd[0]);
 537             dup2 (pd[1], 1);
 538             close (pd[1]);
 539
 540             i = 1;
 541             vec[i++] = "-forwall";
 542             vec[i++] = "-form";
 543             vec[i++] = filter;
 544
 545             if (digest) {
 546                 vec[i++] = "-digest";
 547                 vec[i++] = digest;
 548                 vec[i++] = "-issue";
 549                 snprintf (buf1, sizeof(buf1), "%d", issue);
 550                 vec[i++] = buf1;
 551                 vec[i++] = "-volume";
 552                 snprintf (buf2, sizeof(buf2), "%d", volume);
 553                 vec[i++] = buf2;
 554             }
 555
 556             /*
 557              * Are we dashstuffing (quoting) the lines that begin
 558              * with `-'.  We use the mhl default (don't add any flag)
 559              * unless the user has specified a specific flag.
 560              */
 561             if (dashstuff > 0)
 562                 vec[i++] = "-dashstuffing";
 563             else if (dashstuff < 0)
 564                 vec[i++] = "-nodashstuffing";
 565
 566             if (mp->numsel >= MAXARGS - i)
 567                 adios (NULL, "more than %d messages for %s exec",
 568                         MAXARGS - i, vec[0]);
 569
 570             /*
 571              * Now add the message names to filter.  We can only
 572              * handle about 995 messages (because vec is fixed size),
 573              * but that should be plenty.
 574              */
 575             for (msgnum = mp->lowsel;
 576                  msgnum <= mp->hghsel && i < (int) sizeof(vec) - 1;
 577                  msgnum++)
 578                 if (is_selected (mp, msgnum))
 579                     vec[i++] = getcpy (m_name (msgnum));
 580             vec[i] = NULL;
 581
 582             execvp (mhlproc, vec);
 583             fprintf (stderr, "unable to exec ");
 584             perror (mhlproc);
 585             _exit (-1);
 586
 587         default:
 588             close (pd[1]);
 589             cpydata (pd[0], out, vec[0], file);
 590             close (pd[0]);
 591             pidXwait(child_id, mhlproc);
 592             break;
 593     }
 594 }
 595
 596
 597 /*
 598  * Copy the messages into the draft.  The messages are
 599  * not filtered through the mhlproc.  Do dashstuffing if
 600  * necessary.
 601  */
 602
 603 static void
 604 copy_draft (int out, char *digest, char *file, int volume, int issue, int dashstuff)
 605 {
 606     int fd,i, msgcnt, msgnum;
 607     int len, buflen;
 608     register char *bp, *msgnam;
 609     char buffer[BUFSIZ];
 610
 611     msgcnt = 1;
 612     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 613         if (is_selected (mp, msgnum)) {
 614             if (digest) {
 615                 strncpy (buffer, msgnum == mp->lowsel ? delim3 : delim4,
 616                         sizeof(buffer));
 617             } else {
 618                 /* Get buffer ready to go */
 619                 bp = buffer;
 620                 buflen = sizeof(buffer);
 621
 622                 strncpy (bp, "\n-------", buflen);
 623                 len = strlen (bp);
 624                 bp += len;
 625                 buflen -= len;
 626
 627                 if (msgnum == mp->lowsel) {
 628                     snprintf (bp, buflen, " Forwarded Message%s",
 629                         mp->numsel > 1 ? "s" : "");
 630                 } else {
 631                     snprintf (bp, buflen, " Message %d", msgcnt);
 632                 }
 633                 len = strlen (bp);
 634                 bp += len;
 635                 buflen -= len;
 636
 637                 strncpy (bp, "\n\n", buflen);
 638             }
 639             write (out, buffer, strlen (buffer));
 640
 641             if ((fd = open (msgnam = m_name (msgnum), O_RDONLY)) == NOTOK) {
 642                 admonish (msgnam, "unable to read message");
 643                 continue;
 644             }
 645
 646             /*
 647              * Copy the message.  Add RFC934 quoting (dashstuffing)
 648              * unless given the -nodashstuffing flag.
 649              */
 650             if (dashstuff >= 0)
 651                 cpydgst (fd, out, msgnam, file);
 652             else
 653                 cpydata (fd, out, msgnam, file);
 654
 655             close (fd);
 656             msgcnt++;
 657         }
 658     }
 659
 660     if (digest) {
 661         strncpy (buffer, delim4, sizeof(buffer));
 662     } else {
 663         snprintf (buffer, sizeof(buffer), "\n------- End of Forwarded Message%s\n",
 664                 mp->numsel > 1 ? "s" : "");
 665     }
 666     write (out, buffer, strlen (buffer));
 667
 668     if (digest) {
 669         snprintf (buffer, sizeof(buffer), "End of %s Digest [Volume %d Issue %d]\n",
 670                 digest, volume, issue);
 671         i = strlen (buffer);
 672         for (bp = buffer + i; i > 1; i--)
 673             *bp++ = '*';
 674         *bp++ = '\n';
 675         *bp = 0;
 676         write (out, buffer, strlen (buffer));
 677     }
 678 }
 679
 680
 681 /*
 682  * Create a mhn composition file for forwarding message.
 683  */
 684
 685 static void
 686 copy_mime_draft (int out)
 687 {
 688     int msgnum;
 689     char buffer[BUFSIZ];
 690
 691     snprintf (buffer, sizeof(buffer), "#forw [forwarded message%s] +%s",
 692         mp->numsel == 1 ? "" : "s", mp->foldpath);
 693     write (out, buffer, strlen (buffer));
 694     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 695         if (is_selected (mp, msgnum)) {
 696             snprintf (buffer, sizeof(buffer), " %s", m_name (msgnum));
 697             write (out, buffer, strlen (buffer));
 698         }
 699     write (out, "\n", 1);
 700 }