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

   1
   2 /*
   3  * forw.c -- forward a message, or group of messages.
   4  *
   5  * $Id$
   6  *
   7  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   8  * COPYRIGHT file in the root directory of the nmh distribution for
   9  * complete copyright information.
  10  */
  11
  12 #include <h/mh.h>
  13 #include <fcntl.h>
  14 #include <h/fmt_scan.h>
  15 #include <h/tws.h>
  16 #include <h/utils.h>
  17
  18
  19 #define IFORMAT "digest-issue-%s"
  20 #define VFORMAT "digest-volume-%s"
  21
  22 static struct swit switches[] = {
  23 #define ANNOSW                 0
  24     { "annotate", 0 },
  25 #define NANNOSW                1
  26     { "noannotate", 0 },
  27 #define DFOLDSW                2
  28     { "draftfolder +folder", 0 },
  29 #define DMSGSW                 3
  30     { "draftmessage msg", 0 },
  31 #define NDFLDSW                4
  32     { "nodraftfolder", 0 },
  33 #define EDITRSW                5
  34     { "editor editor", 0 },
  35 #define NEDITSW                6
  36     { "noedit", 0 },
  37 #define FILTSW                 7
  38     { "filter filterfile", 0 },
  39 #define FORMSW                 8
  40     { "form formfile", 0 },
  41 #define FRMTSW                 9
  42     { "format", 5 },
  43 #define NFRMTSW               10
  44     { "noformat", 7 },
  45 #define INPLSW                11
  46     { "inplace", 0 },
  47 #define NINPLSW               12
  48     { "noinplace", 0 },
  49 #define MIMESW                13
  50     { "mime", 0 },
  51 #define NMIMESW               14
  52     { "nomime", 0 },
  53 #define DGSTSW                15
  54     { "digest list", 0 },
  55 #define ISSUESW               16
  56     { "issue number", 0 },
  57 #define VOLUMSW               17
  58     { "volume number", 0 },
  59 #define WHATSW                18
  60     { "whatnowproc program", 0 },
  61 #define NWHATSW               19
  62     { "nowhatnowproc", 0 },
  63 #define BITSTUFFSW            20
  64     { "dashstuffing", 0 },              /* interface to mhl */
  65 #define NBITSTUFFSW           21
  66     { "nodashstuffing", 0 },
  67 #define VERSIONSW             22
  68     { "version", 0 },
  69 #define HELPSW                23
  70     { "help", 0 },
  71 #define FILESW                24
  72     { "file file", 4 },                 /* interface from msh */
  73
  74 #ifdef MHE
  75 #define BILDSW                25
  76     { "build", 5 },                     /* interface from mhe */
  77 #endif /* MHE */
  78
  79     { NULL, 0 }
  80 };
  81
  82 static struct swit aqrnl[] = {
  83 #define NOSW         0
  84     { "quit", 0 },
  85 #define YESW         1
  86     { "replace", 0 },
  87 #define LISTDSW      2
  88     { "list", 0 },
  89 #define REFILSW      3
  90     { "refile +folder", 0 },
  91 #define NEWSW        4
  92     { "new", 0 },
  93     { NULL, 0 }
  94 };
  95
  96 static struct swit aqrl[] = {
  97     { "quit", 0 },
  98     { "replace", 0 },
  99     { "list", 0 },
 100     { "refile +folder", 0 },
 101     { NULL, 0 }
 102 };
 103
 104 static char drft[BUFSIZ];
 105
 106 static char delim3[] =
 107     "\n------------------------------------------------------------\n\n";
 108 static char delim4[] = "\n------------------------------\n\n";
 109
 110
 111 static struct msgs *mp = NULL;          /* used a lot */
 112
 113
 114 /*
 115  * static prototypes
 116  */
 117 static void mhl_draft (int, char *, int, int, char *, char *, int);
 118 static void copy_draft (int, char *, char *, int, int, int);
 119 static void copy_mime_draft (int);
 120 static int build_form (char *, char *, int, int);
 121
 122
 123 int
 124 main (int argc, char **argv)
 125 {
 126     int msgp = 0, anot = 0, inplace = 1, mime = 0;
 127     int issue = 0, volume = 0, dashstuff = 0;
 128     int nedit = 0, nwhat = 0, i, in;
 129     int out, isdf = 0, msgnum;
 130     char *cp, *cwd, *maildir, *dfolder = NULL;
 131     char *dmsg = NULL, *digest = NULL, *ed = NULL;
 132     char *file = NULL, *filter = NULL, *folder = NULL;
 133     char *form = NULL, buf[BUFSIZ], value[10];
 134     char **argp, **arguments, *msgs[MAXARGS];
 135     struct stat st;
 136
 137 #ifdef  MHE
 138     int buildsw = 0;
 139 #endif  /* MHE */
 140
 141 #ifdef LOCALE
 142     setlocale(LC_ALL, "");
 143 #endif
 144     invo_name = r1bindex (argv[0], '/');
 145
 146     /* read user profile/context */
 147     context_read();
 148
 149     arguments = getarguments (invo_name, argc, argv, 1);
 150     argp = arguments;
 151
 152     while ((cp = *argp++)) {
 153         if (*cp == '-') {
 154             switch (smatch (++cp, switches)) {
 155                 case AMBIGSW:
 156                     ambigsw (cp, switches);
 157                     done (1);
 158                 case UNKWNSW:
 159                     adios (NULL, "-%s unknown", cp);
 160
 161                 case HELPSW:
 162                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 163                         invo_name);
 164                     print_help (buf, switches, 1);
 165                     done (1);
 166                 case VERSIONSW:
 167                     print_version(invo_name);
 168                     done (1);
 169
 170                 case ANNOSW:
 171                     anot++;
 172                     continue;
 173                 case NANNOSW:
 174                     anot = 0;
 175                     continue;
 176
 177                 case EDITRSW:
 178                     if (!(ed = *argp++) || *ed == '-')
 179                         adios (NULL, "missing argument to %s", argp[-2]);
 180                     nedit = 0;
 181                     continue;
 182                 case NEDITSW:
 183                     nedit++;
 184                     continue;
 185
 186                 case WHATSW:
 187                     if (!(whatnowproc = *argp++) || *whatnowproc == '-')
 188                         adios (NULL, "missing argument to %s", argp[-2]);
 189                     nwhat = 0;
 190                     continue;
 191 #ifdef MHE
 192                 case BILDSW:
 193                     buildsw++;  /* fall... */
 194 #endif /* MHE */
 195                 case NWHATSW:
 196                     nwhat++;
 197                     continue;
 198
 199                 case FILESW:
 200                     if (file)
 201                         adios (NULL, "only one file at a time!");
 202                     if (!(cp = *argp++) || *cp == '-')
 203                         adios (NULL, "missing argument to %s", argp[-2]);
 204                     file = path (cp, TFILE);
 205                     continue;
 206                 case FILTSW:
 207                     if (!(cp = *argp++) || *cp == '-')
 208                         adios (NULL, "missing argument to %s", argp[-2]);
 209                     filter = getcpy (etcpath (cp));
 210                     mime = 0;
 211                     continue;
 212                 case FORMSW:
 213                     if (!(form = *argp++) || *form == '-')
 214                         adios (NULL, "missing argument to %s", argp[-2]);
 215                     continue;
 216
 217                 case FRMTSW:
 218                     filter = getcpy (etcpath (mhlforward));
 219                     continue;
 220                 case NFRMTSW:
 221                     filter = NULL;
 222                     continue;
 223
 224                 case INPLSW:
 225                     inplace++;
 226                     continue;
 227                 case NINPLSW:
 228                     inplace = 0;
 229                     continue;
 230
 231                 case MIMESW:
 232                     mime++;
 233                     filter = NULL;
 234                     continue;
 235                 case NMIMESW:
 236                     mime = 0;
 237                     continue;
 238
 239                 case DGSTSW:
 240                     if (!(digest = *argp++) || *digest == '-')
 241                         adios (NULL, "missing argument to %s", argp[-2]);
 242                     mime = 0;
 243                     continue;
 244                 case ISSUESW:
 245                     if (!(cp = *argp++) || *cp == '-')
 246                         adios (NULL, "missing argument to %s", argp[-2]);
 247                     if ((issue = atoi (cp)) < 1)
 248                         adios (NULL, "bad argument %s %s", argp[-2], cp);
 249                     continue;
 250                 case VOLUMSW:
 251                     if (!(cp = *argp++) || *cp == '-')
 252                         adios (NULL, "missing argument to %s", argp[-2]);
 253                     if ((volume = atoi (cp)) < 1)
 254                         adios (NULL, "bad argument %s %s", argp[-2], cp);
 255                     continue;
 256
 257                 case DFOLDSW:
 258                     if (dfolder)
 259                         adios (NULL, "only one draft folder at a time!");
 260                     if (!(cp = *argp++) || *cp == '-')
 261                         adios (NULL, "missing argument to %s", argp[-2]);
 262                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 263                                     *cp != '@' ? TFOLDER : TSUBCWF);
 264                     continue;
 265                 case DMSGSW:
 266                     if (dmsg)
 267                         adios (NULL, "only one draft message at a time!");
 268                     if (!(dmsg = *argp++) || *dmsg == '-')
 269                         adios (NULL, "missing argument to %s", argp[-2]);
 270                     continue;
 271                 case NDFLDSW:
 272                     dfolder = NULL;
 273                     isdf = NOTOK;
 274                     continue;
 275
 276                 case BITSTUFFSW:
 277                     dashstuff = 1;      /* trinary logic */
 278                     continue;
 279                 case NBITSTUFFSW:
 280                     dashstuff = -1;     /* trinary logic */
 281                     continue;
 282             }
 283         }
 284         if (*cp == '+' || *cp == '@') {
 285             if (folder)
 286                 adios (NULL, "only one folder at a time!");
 287             else
 288                 folder = pluspath (cp);
 289         } else {
 290             msgs[msgp++] = cp;
 291         }
 292     }
 293
 294     cwd = getcpy (pwd ());
 295
 296     if (!context_find ("path"))
 297         free (path ("./", TFOLDER));
 298     if (file && (msgp || folder))
 299         adios (NULL, "can't mix files and folders/msgs");
 300
 301 try_it_again:
 302
 303 #ifdef MHE
 304     strncpy (drft, buildsw ? m_maildir ("draft")
 305                           : m_draft (dfolder, NULL, NOUSE, &isdf), sizeof(drft));
 306
 307     /* Check if a draft already exists */
 308     if (!buildsw && stat (drft, &st) != NOTOK) {
 309 #else
 310     strncpy (drft, m_draft (dfolder, dmsg, NOUSE, &isdf), sizeof(drft));
 311
 312     /* Check if a draft already exists */
 313     if (stat (drft, &st) != NOTOK) {
 314 #endif  /* MHE */
 315         printf ("Draft \"%s\" exists (%ld bytes).", drft, (long) st.st_size);
 316         for (i = LISTDSW; i != YESW;) {
 317             if (!(argp = getans ("\nDisposition? ", isdf ? aqrnl : aqrl)))
 318                 done (1);
 319             switch (i = smatch (*argp, isdf ? aqrnl : aqrl)) {
 320                 case NOSW:
 321                     done (0);
 322                 case NEWSW:
 323                     dmsg = NULL;
 324                     goto try_it_again;
 325                 case YESW:
 326                     break;
 327                 case LISTDSW:
 328                     showfile (++argp, drft);
 329                     break;
 330                 case REFILSW:
 331                     if (refile (++argp, drft) == 0)
 332                         i = YESW;
 333                     break;
 334                 default:
 335                     advise (NULL, "say what?");
 336                     break;
 337             }
 338         }
 339     }
 340
 341     if (file) {
 342         /*
 343          * Forwarding a file.
 344          */
 345         anot = 0;       /* don't want to annotate a file */
 346     } else {
 347         /*
 348          * Forwarding a message.
 349          */
 350         if (!msgp)
 351             msgs[msgp++] = "cur";
 352         if (!folder)
 353             folder = getfolder (1);
 354         maildir = m_maildir (folder);
 355
 356         if (chdir (maildir) == NOTOK)
 357             adios (maildir, "unable to change directory to");
 358
 359         /* read folder and create message structure */
 360         if (!(mp = folder_read (folder)))
 361             adios (NULL, "unable to read folder %s", folder);
 362
 363         /* check for empty folder */
 364         if (mp->nummsg == 0)
 365             adios (NULL, "no messages in %s", folder);
 366
 367         /* parse all the message ranges/sequences and set SELECTED */
 368         for (msgnum = 0; msgnum < msgp; msgnum++)
 369             if (!m_convert (mp, msgs[msgnum]))
 370                 done (1);
 371         seq_setprev (mp);       /* set the previous sequence */
 372     }
 373
 374     if (filter && access (filter, R_OK) == NOTOK)
 375         adios (filter, "unable to read");
 376
 377     /*
 378      * Open form (component) file.
 379      */
 380     if (digest) {
 381         if (issue == 0) {
 382             snprintf (buf, sizeof(buf), IFORMAT, digest);
 383             if (volume == 0
 384                     && (cp = context_find (buf))
 385                     && ((issue = atoi (cp)) < 0))
 386                 issue = 0;
 387             issue++;
 388         }
 389         if (volume == 0)
 390             snprintf (buf, sizeof(buf), VFORMAT, digest);
 391         if ((cp = context_find (buf)) == NULL || (volume = atoi (cp)) <= 0)
 392             volume = 1;
 393         if (!form)
 394             form = digestcomps;
 395         in = build_form (form, digest, volume, issue);
 396     } else
 397         in = open_form(&form, forwcomps);
 398
 399     if ((out = creat (drft, m_gmprot ())) == NOTOK)
 400         adios (drft, "unable to create");
 401
 402     /*
 403      * copy the components into the draft
 404      */
 405     cpydata (in, out, form, drft);
 406     close (in);
 407
 408     if (file) {
 409         /* just copy the file into the draft */
 410         if ((in = open (file, O_RDONLY)) == NOTOK)
 411             adios (file, "unable to open");
 412         cpydata (in, out, file, drft);
 413         close (in);
 414         close (out);
 415     } else {
 416         /*
 417          * If filter file is defined, then format the
 418          * messages into the draft using mhlproc.
 419          */
 420         if (filter)
 421             mhl_draft (out, digest, volume, issue, drft, filter, dashstuff);
 422         else if (mime)
 423             copy_mime_draft (out);
 424         else
 425             copy_draft (out, digest, drft, volume, issue, dashstuff);
 426         close (out);
 427
 428         if (digest) {
 429             snprintf (buf, sizeof(buf), IFORMAT, digest);
 430             snprintf (value, sizeof(value), "%d", issue);
 431             context_replace (buf, getcpy (value));
 432             snprintf (buf, sizeof(buf), VFORMAT, digest);
 433             snprintf (value, sizeof(value), "%d", volume);
 434             context_replace (buf, getcpy (value));
 435         }
 436
 437         context_replace (pfolder, folder);      /* update current folder   */
 438         seq_setcur (mp, mp->lowsel);            /* update current message  */
 439         seq_save (mp);                          /* synchronize sequences   */
 440         context_save ();                        /* save the context file   */
 441     }
 442
 443     if (nwhat)
 444         done (0);
 445     what_now (ed, nedit, NOUSE, drft, NULL, 0, mp,
 446         anot ? "Forwarded" : NULL, inplace, cwd);
 447     done (1);
 448     return 1;
 449 }
 450
 451
 452 /*
 453  * Filter the messages you are forwarding, into the
 454  * draft calling the mhlproc, and reading its output
 455  * from a pipe.
 456  */
 457
 458 static void
 459 mhl_draft (int out, char *digest, int volume, int issue,
 460             char *file, char *filter, int dashstuff)
 461 {
 462     pid_t child_id;
 463     int i, msgnum, pd[2];
 464     char *vec[MAXARGS];
 465     char buf1[BUFSIZ];
 466     char buf2[BUFSIZ];
 467
 468     if (pipe (pd) == NOTOK)
 469         adios ("pipe", "unable to create");
 470
 471     vec[0] = r1bindex (mhlproc, '/');
 472
 473     for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 474         sleep (5);
 475     switch (child_id) {
 476         case NOTOK:
 477             adios ("fork", "unable to");
 478
 479         case OK:
 480             close (pd[0]);
 481             dup2 (pd[1], 1);
 482             close (pd[1]);
 483
 484             i = 1;
 485             vec[i++] = "-forwall";
 486             vec[i++] = "-form";
 487             vec[i++] = filter;
 488
 489             if (digest) {
 490                 vec[i++] = "-digest";
 491                 vec[i++] = digest;
 492                 vec[i++] = "-issue";
 493                 snprintf (buf1, sizeof(buf1), "%d", issue);
 494                 vec[i++] = buf1;
 495                 vec[i++] = "-volume";
 496                 snprintf (buf2, sizeof(buf2), "%d", volume);
 497                 vec[i++] = buf2;
 498             }
 499
 500             /*
 501              * Are we dashstuffing (quoting) the lines that begin
 502              * with `-'.  We use the mhl default (don't add any flag)
 503              * unless the user has specified a specific flag.
 504              */
 505             if (dashstuff > 0)
 506                 vec[i++] = "-dashstuffing";
 507             else if (dashstuff < 0)
 508                 vec[i++] = "-nodashstuffing";
 509
 510             if (mp->numsel >= MAXARGS - i)
 511                 adios (NULL, "more than %d messages for %s exec",
 512                         MAXARGS - i, vec[0]);
 513
 514             /*
 515              * Now add the message names to filter.  We can only
 516              * handle about 995 messages (because vec is fixed size),
 517              * but that should be plenty.
 518              */
 519             for (msgnum = mp->lowsel; msgnum <= mp->hghsel && i < sizeof(vec) - 1;
 520                         msgnum++)
 521                 if (is_selected (mp, msgnum))
 522                     vec[i++] = getcpy (m_name (msgnum));
 523             vec[i] = NULL;
 524
 525             execvp (mhlproc, vec);
 526             fprintf (stderr, "unable to exec ");
 527             perror (mhlproc);
 528             _exit (-1);
 529
 530         default:
 531             close (pd[1]);
 532             cpydata (pd[0], out, vec[0], file);
 533             close (pd[0]);
 534             pidXwait(child_id, mhlproc);
 535             break;
 536     }
 537 }
 538
 539
 540 /*
 541  * Copy the messages into the draft.  The messages are
 542  * not filtered through the mhlproc.  Do dashstuffing if
 543  * necessary.
 544  */
 545
 546 static void
 547 copy_draft (int out, char *digest, char *file, int volume, int issue, int dashstuff)
 548 {
 549     int fd,i, msgcnt, msgnum;
 550     int len, buflen;
 551     register char *bp, *msgnam;
 552     char buffer[BUFSIZ];
 553
 554     msgcnt = 1;
 555     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 556         if (is_selected (mp, msgnum)) {
 557             if (digest) {
 558                 strncpy (buffer, msgnum == mp->lowsel ? delim3 : delim4,
 559                         sizeof(buffer));
 560             } else {
 561                 /* Get buffer ready to go */
 562                 bp = buffer;
 563                 buflen = sizeof(buffer);
 564
 565                 strncpy (bp, "\n-------", buflen);
 566                 len = strlen (bp);
 567                 bp += len;
 568                 buflen -= len;
 569
 570                 if (msgnum == mp->lowsel) {
 571                     snprintf (bp, buflen, " Forwarded Message%s",
 572                         mp->numsel > 1 ? "s" : "");
 573                 } else {
 574                     snprintf (bp, buflen, " Message %d", msgcnt);
 575                 }
 576                 len = strlen (bp);
 577                 bp += len;
 578                 buflen -= len;
 579
 580                 strncpy (bp, "\n\n", buflen);
 581             }
 582             write (out, buffer, strlen (buffer));
 583
 584             if ((fd = open (msgnam = m_name (msgnum), O_RDONLY)) == NOTOK) {
 585                 admonish (msgnam, "unable to read message");
 586                 continue;
 587             }
 588
 589             /*
 590              * Copy the message.  Add RFC934 quoting (dashstuffing)
 591              * unless given the -nodashstuffing flag.
 592              */
 593             if (dashstuff >= 0)
 594                 cpydgst (fd, out, msgnam, file);
 595             else
 596                 cpydata (fd, out, msgnam, file);
 597
 598             close (fd);
 599             msgcnt++;
 600         }
 601     }
 602
 603     if (digest) {
 604         strncpy (buffer, delim4, sizeof(buffer));
 605     } else {
 606         snprintf (buffer, sizeof(buffer), "\n------- End of Forwarded Message%s\n\n",
 607                 mp->numsel > 1 ? "s" : "");
 608     }
 609     write (out, buffer, strlen (buffer));
 610
 611     if (digest) {
 612         snprintf (buffer, sizeof(buffer), "End of %s Digest [Volume %d Issue %d]\n",
 613                 digest, volume, issue);
 614         i = strlen (buffer);
 615         for (bp = buffer + i; i > 1; i--)
 616             *bp++ = '*';
 617         *bp++ = '\n';
 618         *bp = 0;
 619         write (out, buffer, strlen (buffer));
 620     }
 621 }
 622
 623
 624 /*
 625  * Create a mhn composition file for forwarding message.
 626  */
 627
 628 static void
 629 copy_mime_draft (int out)
 630 {
 631     int msgnum;
 632     char buffer[BUFSIZ];
 633
 634     snprintf (buffer, sizeof(buffer), "#forw [forwarded message%s] +%s",
 635         mp->numsel == 1 ? "" : "s", mp->foldpath);
 636     write (out, buffer, strlen (buffer));
 637     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 638         if (is_selected (mp, msgnum)) {
 639             snprintf (buffer, sizeof(buffer), " %s", m_name (msgnum));
 640             write (out, buffer, strlen (buffer));
 641         }
 642     write (out, "\n", 1);
 643 }
 644
 645
 646 static int
 647 build_form (char *form, char *digest, int volume, int issue)
 648 {
 649     int in;
 650     int fmtsize;
 651     register char *nfs;
 652     char *line, tmpfil[BUFSIZ];
 653     register FILE *tmp;
 654     register struct comp *cptr;
 655     struct format *fmt;
 656     int dat[5];
 657
 658     /* Get new format string */
 659     nfs = new_fs (form, NULL, NULL);
 660     fmtsize = strlen (nfs) + 256;
 661
 662     /* Compile format string */
 663     fmt_compile (nfs, &fmt);
 664
 665     FINDCOMP (cptr, "digest");
 666     if (cptr)
 667         cptr->c_text = digest;
 668     FINDCOMP (cptr, "date");
 669     if (cptr)
 670         cptr->c_text = getcpy(dtimenow (0));
 671
 672     dat[0] = issue;
 673     dat[1] = volume;
 674     dat[2] = 0;
 675     dat[3] = fmtsize;
 676     dat[4] = 0;
 677
 678     strncpy (tmpfil, m_tmpfil (invo_name), sizeof(tmpfil));
 679     if ((tmp = fopen (tmpfil, "w+")) == NULL)
 680         adios (tmpfil, "unable to create");
 681     unlink (tmpfil);
 682     if ((in = dup (fileno (tmp))) == NOTOK)
 683         adios ("dup", "unable to");
 684
 685     line = mh_xmalloc ((unsigned) fmtsize);
 686     fmt_scan (fmt, line, fmtsize, dat);
 687     fputs (line, tmp);
 688     free (line);
 689     if (fclose (tmp))
 690         adios (tmpfil, "error writing");
 691
 692     lseek (in, (off_t) 0, SEEK_SET);
 693     return in;
 694 }