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
  17
  18 #define IFORMAT "digest-issue-%s"
  19 #define VFORMAT "digest-volume-%s"
  20
  21 static struct swit switches[] = {
  22 #define ANNOSW                 0
  23     { "annotate", 0 },
  24 #define NANNOSW                1
  25     { "noannotate", 0 },
  26 #define DFOLDSW                2
  27     { "draftfolder +folder", 0 },
  28 #define DMSGSW                 3
  29     { "draftmessage msg", 0 },
  30 #define NDFLDSW                4
  31     { "nodraftfolder", 0 },
  32 #define EDITRSW                5
  33     { "editor editor", 0 },
  34 #define NEDITSW                6
  35     { "noedit", 0 },
  36 #define FILTSW                 7
  37     { "filter filterfile", 0 },
  38 #define FORMSW                 8
  39     { "form formfile", 0 },
  40 #define FRMTSW                 9
  41     { "format", 5 },
  42 #define NFRMTSW               10
  43     { "noformat", 7 },
  44 #define INPLSW                11
  45     { "inplace", 0 },
  46 #define NINPLSW               12
  47     { "noinplace", 0 },
  48 #define MIMESW                13
  49     { "mime", 0 },
  50 #define NMIMESW               14
  51     { "nomime", 0 },
  52 #define DGSTSW                15
  53     { "digest list", 0 },
  54 #define ISSUESW               16
  55     { "issue number", 0 },
  56 #define VOLUMSW               17
  57     { "volume number", 0 },
  58 #define WHATSW                18
  59     { "whatnowproc program", 0 },
  60 #define NWHATSW               19
  61     { "nowhatnowproc", 0 },
  62 #define BITSTUFFSW            20
  63     { "dashstuffing", 0 },              /* interface to mhl */
  64 #define NBITSTUFFSW           21
  65     { "nodashstuffing", 0 },
  66 #define VERSIONSW             22
  67     { "version", 0 },
  68 #define HELPSW                23
  69     { "help", 0 },
  70 #define FILESW                24
  71     { "file file", 4 },                 /* interface from msh */
  72
  73 #ifdef MHE
  74 #define BILDSW                25
  75     { "build", 5 },                     /* interface from mhe */
  76 #endif /* MHE */
  77
  78     { NULL, 0 }
  79 };
  80
  81 static struct swit aqrnl[] = {
  82 #define NOSW         0
  83     { "quit", 0 },
  84 #define YESW         1
  85     { "replace", 0 },
  86 #define LISTDSW      2
  87     { "list", 0 },
  88 #define REFILSW      3
  89     { "refile +folder", 0 },
  90 #define NEWSW        4
  91     { "new", 0 },
  92     { NULL, 0 }
  93 };
  94
  95 static struct swit aqrl[] = {
  96     { "quit", 0 },
  97     { "replace", 0 },
  98     { "list", 0 },
  99     { "refile +folder", 0 },
 100     { NULL, 0 }
 101 };
 102
 103 static char drft[BUFSIZ];
 104
 105 static char delim3[] =
 106     "\n------------------------------------------------------------\n\n";
 107 static char delim4[] = "\n------------------------------\n\n";
 108
 109
 110 static struct msgs *mp = NULL;          /* used a lot */
 111
 112
 113 /*
 114  * static prototypes
 115  */
 116 static void mhl_draft (int, char *, int, int, char *, char *, int);
 117 static void copy_draft (int, char *, char *, int, int, int);
 118 static void copy_mime_draft (int);
 119 static int build_form (char *, char *, int, int);
 120
 121
 122 int
 123 main (int argc, char **argv)
 124 {
 125     int msgp = 0, anot = 0, inplace = 1, mime = 0;
 126     int issue = 0, volume = 0, dashstuff = 0;
 127     int nedit = 0, nwhat = 0, i, in;
 128     int out, isdf = 0, msgnum;
 129     char *cp, *cwd, *maildir, *dfolder = NULL;
 130     char *dmsg = NULL, *digest = NULL, *ed = NULL;
 131     char *file = NULL, *filter = NULL, *folder = NULL;
 132     char *form = NULL, buf[BUFSIZ], value[10];
 133     char **argp, **arguments, *msgs[MAXARGS];
 134     struct stat st;
 135
 136 #ifdef  MHE
 137     int buildsw = 0;
 138 #endif  /* MHE */
 139
 140 #ifdef LOCALE
 141     setlocale(LC_ALL, "");
 142 #endif
 143     invo_name = r1bindex (argv[0], '/');
 144
 145     /* read user profile/context */
 146     context_read();
 147
 148     arguments = getarguments (invo_name, argc, argv, 1);
 149     argp = arguments;
 150
 151     while ((cp = *argp++)) {
 152         if (*cp == '-') {
 153             switch (smatch (++cp, switches)) {
 154                 case AMBIGSW:
 155                     ambigsw (cp, switches);
 156                     done (1);
 157                 case UNKWNSW:
 158                     adios (NULL, "-%s unknown", cp);
 159
 160                 case HELPSW:
 161                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 162                         invo_name);
 163                     print_help (buf, switches, 1);
 164                     done (1);
 165                 case VERSIONSW:
 166                     print_version(invo_name);
 167                     done (1);
 168
 169                 case ANNOSW:
 170                     anot++;
 171                     continue;
 172                 case NANNOSW:
 173                     anot = 0;
 174                     continue;
 175
 176                 case EDITRSW:
 177                     if (!(ed = *argp++) || *ed == '-')
 178                         adios (NULL, "missing argument to %s", argp[-2]);
 179                     nedit = 0;
 180                     continue;
 181                 case NEDITSW:
 182                     nedit++;
 183                     continue;
 184
 185                 case WHATSW:
 186                     if (!(whatnowproc = *argp++) || *whatnowproc == '-')
 187                         adios (NULL, "missing argument to %s", argp[-2]);
 188                     nwhat = 0;
 189                     continue;
 190 #ifdef MHE
 191                 case BILDSW:
 192                     buildsw++;  /* fall... */
 193 #endif /* MHE */
 194                 case NWHATSW:
 195                     nwhat++;
 196                     continue;
 197
 198                 case FILESW:
 199                     if (file)
 200                         adios (NULL, "only one file at a time!");
 201                     if (!(cp = *argp++) || *cp == '-')
 202                         adios (NULL, "missing argument to %s", argp[-2]);
 203                     file = path (cp, TFILE);
 204                     continue;
 205                 case FILTSW:
 206                     if (!(cp = *argp++) || *cp == '-')
 207                         adios (NULL, "missing argument to %s", argp[-2]);
 208                     filter = getcpy (etcpath (cp));
 209                     mime = 0;
 210                     continue;
 211                 case FORMSW:
 212                     if (!(form = *argp++) || *form == '-')
 213                         adios (NULL, "missing argument to %s", argp[-2]);
 214                     continue;
 215
 216                 case FRMTSW:
 217                     filter = getcpy (etcpath (mhlforward));
 218                     continue;
 219                 case NFRMTSW:
 220                     filter = NULL;
 221                     continue;
 222
 223                 case INPLSW:
 224                     inplace++;
 225                     continue;
 226                 case NINPLSW:
 227                     inplace = 0;
 228                     continue;
 229
 230                 case MIMESW:
 231                     mime++;
 232                     filter = NULL;
 233                     continue;
 234                 case NMIMESW:
 235                     mime = 0;
 236                     continue;
 237
 238                 case DGSTSW:
 239                     if (!(digest = *argp++) || *digest == '-')
 240                         adios (NULL, "missing argument to %s", argp[-2]);
 241                     mime = 0;
 242                     continue;
 243                 case ISSUESW:
 244                     if (!(cp = *argp++) || *cp == '-')
 245                         adios (NULL, "missing argument to %s", argp[-2]);
 246                     if ((issue = atoi (cp)) < 1)
 247                         adios (NULL, "bad argument %s %s", argp[-2], cp);
 248                     continue;
 249                 case VOLUMSW:
 250                     if (!(cp = *argp++) || *cp == '-')
 251                         adios (NULL, "missing argument to %s", argp[-2]);
 252                     if ((volume = atoi (cp)) < 1)
 253                         adios (NULL, "bad argument %s %s", argp[-2], cp);
 254                     continue;
 255
 256                 case DFOLDSW:
 257                     if (dfolder)
 258                         adios (NULL, "only one draft folder at a time!");
 259                     if (!(cp = *argp++) || *cp == '-')
 260                         adios (NULL, "missing argument to %s", argp[-2]);
 261                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 262                                     *cp != '@' ? TFOLDER : TSUBCWF);
 263                     continue;
 264                 case DMSGSW:
 265                     if (dmsg)
 266                         adios (NULL, "only one draft message at a time!");
 267                     if (!(dmsg = *argp++) || *dmsg == '-')
 268                         adios (NULL, "missing argument to %s", argp[-2]);
 269                     continue;
 270                 case NDFLDSW:
 271                     dfolder = NULL;
 272                     isdf = NOTOK;
 273                     continue;
 274
 275                 case BITSTUFFSW:
 276                     dashstuff = 1;      /* trinary logic */
 277                     continue;
 278                 case NBITSTUFFSW:
 279                     dashstuff = -1;     /* trinary logic */
 280                     continue;
 281             }
 282         }
 283         if (*cp == '+' || *cp == '@') {
 284             if (folder)
 285                 adios (NULL, "only one folder at a time!");
 286             else
 287                 folder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF);
 288         } else {
 289             msgs[msgp++] = cp;
 290         }
 291     }
 292
 293     cwd = getcpy (pwd ());
 294
 295     if (!context_find ("path"))
 296         free (path ("./", TFOLDER));
 297     if (file && (msgp || folder))
 298         adios (NULL, "can't mix files and folders/msgs");
 299
 300 try_it_again:
 301
 302 #ifdef MHE
 303     strncpy (drft, buildsw ? m_maildir ("draft")
 304                           : m_draft (dfolder, NULL, NOUSE, &isdf), sizeof(drft));
 305
 306     /* Check if a draft already exists */
 307     if (!buildsw && stat (drft, &st) != NOTOK) {
 308 #else
 309     strncpy (drft, m_draft (dfolder, dmsg, NOUSE, &isdf), sizeof(drft));
 310
 311     /* Check if a draft already exists */
 312     if (stat (drft, &st) != NOTOK) {
 313 #endif  /* MHE */
 314         printf ("Draft \"%s\" exists (%ld bytes).", drft, (long) st.st_size);
 315         for (i = LISTDSW; i != YESW;) {
 316             if (!(argp = getans ("\nDisposition? ", isdf ? aqrnl : aqrl)))
 317                 done (1);
 318             switch (i = smatch (*argp, isdf ? aqrnl : aqrl)) {
 319                 case NOSW:
 320                     done (0);
 321                 case NEWSW:
 322                     dmsg = NULL;
 323                     goto try_it_again;
 324                 case YESW:
 325                     break;
 326                 case LISTDSW:
 327                     showfile (++argp, drft);
 328                     break;
 329                 case REFILSW:
 330                     if (refile (++argp, drft) == 0)
 331                         i = YESW;
 332                     break;
 333                 default:
 334                     advise (NULL, "say what?");
 335                     break;
 336             }
 337         }
 338     }
 339
 340     if (file) {
 341         /*
 342          * Forwarding a file.
 343          */
 344         anot = 0;       /* don't want to annotate a file */
 345     } else {
 346         /*
 347          * Forwarding a message.
 348          */
 349         if (!msgp)
 350             msgs[msgp++] = "cur";
 351         if (!folder)
 352             folder = getfolder (1);
 353         maildir = m_maildir (folder);
 354
 355         if (chdir (maildir) == NOTOK)
 356             adios (maildir, "unable to change directory to");
 357
 358         /* read folder and create message structure */
 359         if (!(mp = folder_read (folder)))
 360             adios (NULL, "unable to read folder %s", folder);
 361
 362         /* check for empty folder */
 363         if (mp->nummsg == 0)
 364             adios (NULL, "no messages in %s", folder);
 365
 366         /* parse all the message ranges/sequences and set SELECTED */
 367         for (msgnum = 0; msgnum < msgp; msgnum++)
 368             if (!m_convert (mp, msgs[msgnum]))
 369                 done (1);
 370         seq_setprev (mp);       /* set the previous sequence */
 371     }
 372
 373     if (filter && access (filter, R_OK) == NOTOK)
 374         adios (filter, "unable to read");
 375
 376     /*
 377      * Open form (component) file.
 378      */
 379     if (digest) {
 380         if (issue == 0) {
 381             snprintf (buf, sizeof(buf), IFORMAT, digest);
 382             if (volume == 0
 383                     && (cp = context_find (buf))
 384                     && ((issue = atoi (cp)) < 0))
 385                 issue = 0;
 386             issue++;
 387         }
 388         if (volume == 0)
 389             snprintf (buf, sizeof(buf), VFORMAT, digest);
 390         if ((cp = context_find (buf)) == NULL || (volume = atoi (cp)) <= 0)
 391             volume = 1;
 392         if (!form)
 393             form = digestcomps;
 394         in = build_form (form, digest, volume, issue);
 395     } else {
 396         if (form) {
 397             if ((in = open (etcpath (form), O_RDONLY)) == NOTOK)
 398                 adios (form, "unable to open form file");
 399         } else {
 400             if ((in = open (etcpath (forwcomps), O_RDONLY)) == NOTOK)
 401                 adios (forwcomps, "unable to open default components file");
 402             form = forwcomps;
 403         }
 404     }
 405
 406     if ((out = creat (drft, m_gmprot ())) == NOTOK)
 407         adios (drft, "unable to create");
 408
 409     /*
 410      * copy the components into the draft
 411      */
 412     cpydata (in, out, form, drft);
 413     close (in);
 414
 415     if (file) {
 416         /* just copy the file into the draft */
 417         if ((in = open (file, O_RDONLY)) == NOTOK)
 418             adios (file, "unable to open");
 419         cpydata (in, out, file, drft);
 420         close (in);
 421         close (out);
 422     } else {
 423         /*
 424          * If filter file is defined, then format the
 425          * messages into the draft using mhlproc.
 426          */
 427         if (filter)
 428             mhl_draft (out, digest, volume, issue, drft, filter, dashstuff);
 429         else if (mime)
 430             copy_mime_draft (out);
 431         else
 432             copy_draft (out, digest, drft, volume, issue, dashstuff);
 433         close (out);
 434
 435         if (digest) {
 436             snprintf (buf, sizeof(buf), IFORMAT, digest);
 437             snprintf (value, sizeof(value), "%d", issue);
 438             context_replace (buf, getcpy (value));
 439             snprintf (buf, sizeof(buf), VFORMAT, digest);
 440             snprintf (value, sizeof(value), "%d", volume);
 441             context_replace (buf, getcpy (value));
 442         }
 443
 444         context_replace (pfolder, folder);      /* update current folder   */
 445         seq_setcur (mp, mp->lowsel);            /* update current message  */
 446         seq_save (mp);                          /* synchronize sequences   */
 447         context_save ();                        /* save the context file   */
 448     }
 449
 450     if (nwhat)
 451         done (0);
 452     what_now (ed, nedit, NOUSE, drft, NULL, 0, mp,
 453         anot ? "Forwarded" : NULL, inplace, cwd);
 454     return done (1);
 455 }
 456
 457
 458 /*
 459  * Filter the messages you are forwarding, into the
 460  * draft calling the mhlproc, and reading its output
 461  * from a pipe.
 462  */
 463
 464 static void
 465 mhl_draft (int out, char *digest, int volume, int issue,
 466             char *file, char *filter, int dashstuff)
 467 {
 468     pid_t child_id;
 469     int i, msgnum, pd[2];
 470     char *vec[MAXARGS];
 471     char buf1[BUFSIZ];
 472     char buf2[BUFSIZ];
 473
 474     if (pipe (pd) == NOTOK)
 475         adios ("pipe", "unable to create");
 476
 477     vec[0] = r1bindex (mhlproc, '/');
 478
 479     for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 480         sleep (5);
 481     switch (child_id) {
 482         case NOTOK:
 483             adios ("fork", "unable to");
 484
 485         case OK:
 486             close (pd[0]);
 487             dup2 (pd[1], 1);
 488             close (pd[1]);
 489
 490             i = 1;
 491             vec[i++] = "-forwall";
 492             vec[i++] = "-form";
 493             vec[i++] = filter;
 494
 495             if (digest) {
 496                 vec[i++] = "-digest";
 497                 vec[i++] = digest;
 498                 vec[i++] = "-issue";
 499                 snprintf (buf1, sizeof(buf1), "%d", issue);
 500                 vec[i++] = buf1;
 501                 vec[i++] = "-volume";
 502                 snprintf (buf2, sizeof(buf2), "%d", volume);
 503                 vec[i++] = buf2;
 504             }
 505
 506             /*
 507              * Are we dashstuffing (quoting) the lines that begin
 508              * with `-'.  We use the mhl default (don't add any flag)
 509              * unless the user has specified a specific flag.
 510              */
 511             if (dashstuff > 0)
 512                 vec[i++] = "-dashstuffing";
 513             else if (dashstuff < 0)
 514                 vec[i++] = "-nodashstuffing";
 515
 516             if (mp->numsel >= MAXARGS - i)
 517                 adios (NULL, "more than %d messages for %s exec",
 518                         vec[0], MAXARGS - i);
 519
 520             /*
 521              * Now add the message names to filter.  We can only
 522              * handle about 995 messages (because vec is fixed size),
 523              * but that should be plenty.
 524              */
 525             for (msgnum = mp->lowsel; msgnum <= mp->hghsel && i < sizeof(vec) - 1;
 526                         msgnum++)
 527                 if (is_selected (mp, msgnum))
 528                     vec[i++] = getcpy (m_name (msgnum));
 529             vec[i] = NULL;
 530
 531             execvp (mhlproc, vec);
 532             fprintf (stderr, "unable to exec ");
 533             perror (mhlproc);
 534             _exit (-1);
 535
 536         default:
 537             close (pd[1]);
 538             cpydata (pd[0], out, vec[0], file);
 539             close (pd[0]);
 540             pidXwait(child_id, mhlproc);
 541             break;
 542     }
 543 }
 544
 545
 546 /*
 547  * Copy the messages into the draft.  The messages are
 548  * not filtered through the mhlproc.  Do dashstuffing if
 549  * necessary.
 550  */
 551
 552 static void
 553 copy_draft (int out, char *digest, char *file, int volume, int issue, int dashstuff)
 554 {
 555     int fd,i, msgcnt, msgnum;
 556     int len, buflen;
 557     register char *bp, *msgnam;
 558     char buffer[BUFSIZ];
 559
 560     msgcnt = 1;
 561     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 562         if (is_selected (mp, msgnum)) {
 563             if (digest) {
 564                 strncpy (buffer, msgnum == mp->lowsel ? delim3 : delim4,
 565                         sizeof(buffer));
 566             } else {
 567                 /* Get buffer ready to go */
 568                 bp = buffer;
 569                 buflen = sizeof(buffer);
 570
 571                 strncpy (bp, "\n-------", buflen);
 572                 len = strlen (bp);
 573                 bp += len;
 574                 buflen -= len;
 575
 576                 if (msgnum == mp->lowsel) {
 577                     snprintf (bp, buflen, " Forwarded Message%s",
 578                         mp->numsel > 1 ? "s" : "");
 579                 } else {
 580                     snprintf (bp, buflen, " Message %d", msgcnt);
 581                 }
 582                 len = strlen (bp);
 583                 bp += len;
 584                 buflen -= len;
 585
 586                 strncpy (bp, "\n\n", buflen);
 587             }
 588             write (out, buffer, strlen (buffer));
 589
 590             if ((fd = open (msgnam = m_name (msgnum), O_RDONLY)) == NOTOK) {
 591                 admonish (msgnam, "unable to read message");
 592                 continue;
 593             }
 594
 595             /*
 596              * Copy the message.  Add RFC934 quoting (dashstuffing)
 597              * unless given the -nodashstuffing flag.
 598              */
 599             if (dashstuff >= 0)
 600                 cpydgst (fd, out, msgnam, file);
 601             else
 602                 cpydata (fd, out, msgnam, file);
 603
 604             close (fd);
 605             msgcnt++;
 606         }
 607     }
 608
 609     if (digest) {
 610         strncpy (buffer, delim4, sizeof(buffer));
 611     } else {
 612         snprintf (buffer, sizeof(buffer), "\n------- End of Forwarded Message%s\n\n",
 613                 mp->numsel > 1 ? "s" : "");
 614     }
 615     write (out, buffer, strlen (buffer));
 616
 617     if (digest) {
 618         snprintf (buffer, sizeof(buffer), "End of %s Digest [Volume %d Issue %d]\n",
 619                 digest, volume, issue);
 620         i = strlen (buffer);
 621         for (bp = buffer + i; i > 1; i--)
 622             *bp++ = '*';
 623         *bp++ = '\n';
 624         *bp = 0;
 625         write (out, buffer, strlen (buffer));
 626     }
 627 }
 628
 629
 630 /*
 631  * Create a mhn composition file for forwarding message.
 632  */
 633
 634 static void
 635 copy_mime_draft (int out)
 636 {
 637     int msgnum;
 638     char buffer[BUFSIZ];
 639
 640     snprintf (buffer, sizeof(buffer), "#forw [forwarded message%s] +%s",
 641         mp->numsel == 1 ? "" : "s", mp->foldpath);
 642     write (out, buffer, strlen (buffer));
 643     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 644         if (is_selected (mp, msgnum)) {
 645             snprintf (buffer, sizeof(buffer), " %s", m_name (msgnum));
 646             write (out, buffer, strlen (buffer));
 647         }
 648     write (out, "\n", 1);
 649 }
 650
 651
 652 static int
 653 build_form (char *form, char *digest, int volume, int issue)
 654 {
 655     int in;
 656     int fmtsize;
 657     register char *nfs;
 658     char *line, tmpfil[BUFSIZ];
 659     register FILE *tmp;
 660     register struct comp *cptr;
 661     struct format *fmt;
 662     int dat[5];
 663
 664     /* Get new format string */
 665     nfs = new_fs (form, NULL, NULL);
 666     fmtsize = strlen (nfs) + 256;
 667
 668     /* Compile format string */
 669     fmt_compile (nfs, &fmt);
 670
 671     FINDCOMP (cptr, "digest");
 672     if (cptr)
 673         cptr->c_text = digest;
 674     FINDCOMP (cptr, "date");
 675     if (cptr)
 676         cptr->c_text = getcpy(dtimenow (0));
 677
 678     dat[0] = issue;
 679     dat[1] = volume;
 680     dat[2] = 0;
 681     dat[3] = fmtsize;
 682     dat[4] = 0;
 683
 684     strncpy (tmpfil, m_tmpfil (invo_name), sizeof(tmpfil));
 685     if ((tmp = fopen (tmpfil, "w+")) == NULL)
 686         adios (tmpfil, "unable to create");
 687     unlink (tmpfil);
 688     if ((in = dup (fileno (tmp))) == NOTOK)
 689         adios ("dup", "unable to");
 690
 691     if ((line = malloc ((unsigned) fmtsize)) == NULL)
 692         adios (NULL, "unable to allocate format line storage");
 693     fmt_scan (fmt, line, fmtsize, dat);
 694     fputs (line, tmp);
 695     free (line);
 696     if (fclose (tmp))
 697         adios (tmpfil, "error writing");
 698
 699     lseek (in, (off_t) 0, SEEK_SET);
 700     return in;
 701 }