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/fmt_scan.h>
  13 #include <h/tws.h>
  14 #include <h/utils.h>
  15
  16
  17 #define IFORMAT "digest-issue-%s"
  18 #define VFORMAT "digest-volume-%s"
  19
  20 static struct swit switches[] = {
  21 #define ANNOSW                 0
  22     { "annotate", 0 },
  23 #define NANNOSW                1
  24     { "noannotate", 0 },
  25 #define DFOLDSW                2
  26     { "draftfolder +folder", 0 },
  27 #define DMSGSW                 3
  28     { "draftmessage msg", 0 },
  29 #define NDFLDSW                4
  30     { "nodraftfolder", 0 },
  31 #define EDITRSW                5
  32     { "editor editor", 0 },
  33 #define NEDITSW                6
  34     { "noedit", 0 },
  35 #define FILTSW                 7
  36     { "filter filterfile", 0 },
  37 #define FORMSW                 8
  38     { "form formfile", 0 },
  39 #define FRMTSW                 9
  40     { "format", 5 },
  41 #define NFRMTSW               10
  42     { "noformat", 7 },
  43 #define INPLSW                11
  44     { "inplace", 0 },
  45 #define NINPLSW               12
  46     { "noinplace", 0 },
  47 #define MIMESW                13
  48     { "mime", 0 },
  49 #define NMIMESW               14
  50     { "nomime", 0 },
  51 #define DGSTSW                15
  52     { "digest list", 0 },
  53 #define ISSUESW               16
  54     { "issue number", 0 },
  55 #define VOLUMSW               17
  56     { "volume number", 0 },
  57 #define WHATSW                18
  58     { "whatnowproc program", 0 },
  59 #define NWHATSW               19
  60     { "nowhatnowproc", 0 },
  61 #define BITSTUFFSW            20
  62     { "dashstuffing", 0 },              /* interface to mhl */
  63 #define NBITSTUFFSW           21
  64     { "nodashstuffing", 0 },
  65 #define VERSIONSW             22
  66     { "version", 0 },
  67 #define HELPSW                23
  68     { "help", 0 },
  69 #define FILESW                24
  70     { "file file", 4 },                 /* interface from msh */
  71
  72 #ifdef MHE
  73 #define BILDSW                25
  74     { "build", 5 },                     /* interface from mhe */
  75 #endif /* MHE */
  76
  77     { NULL, 0 }
  78 };
  79
  80 static struct swit aqrnl[] = {
  81 #define NOSW         0
  82     { "quit", 0 },
  83 #define YESW         1
  84     { "replace", 0 },
  85 #define LISTDSW      2
  86     { "list", 0 },
  87 #define REFILSW      3
  88     { "refile +folder", 0 },
  89 #define NEWSW        4
  90     { "new", 0 },
  91     { NULL, 0 }
  92 };
  93
  94 static struct swit aqrl[] = {
  95     { "quit", 0 },
  96     { "replace", 0 },
  97     { "list", 0 },
  98     { "refile +folder", 0 },
  99     { NULL, 0 }
 100 };
 101
 102 static char drft[BUFSIZ];
 103
 104 static char delim3[] =
 105     "\n------------------------------------------------------------\n\n";
 106 static char delim4[] = "\n------------------------------\n\n";
 107
 108
 109 static struct msgs *mp = NULL;          /* used a lot */
 110
 111
 112 /*
 113  * static prototypes
 114  */
 115 static void mhl_draft (int, char *, int, int, char *, char *, int);
 116 static void copy_draft (int, char *, char *, int, int, int);
 117 static void copy_mime_draft (int);
 118 static int build_form (char *, char *, int, int);
 119
 120
 121 int
 122 main (int argc, char **argv)
 123 {
 124     int msgp = 0, anot = 0, inplace = 1, mime = 0;
 125     int issue = 0, volume = 0, dashstuff = 0;
 126     int nedit = 0, nwhat = 0, i, in;
 127     int out, isdf = 0, msgnum;
 128     char *cp, *cwd, *maildir, *dfolder = NULL;
 129     char *dmsg = NULL, *digest = NULL, *ed = NULL;
 130     char *file = NULL, *filter = NULL, *folder = NULL;
 131     char *form = NULL, buf[BUFSIZ], value[10];
 132     char **argp, **arguments, *msgs[MAXARGS];
 133     struct stat st;
 134
 135 #ifdef  MHE
 136     int buildsw = 0;
 137 #endif  /* MHE */
 138
 139 #ifdef LOCALE
 140     setlocale(LC_ALL, "");
 141 #endif
 142     invo_name = r1bindex (argv[0], '/');
 143
 144     /* read user profile/context */
 145     context_read();
 146
 147     arguments = getarguments (invo_name, argc, argv, 1);
 148     argp = arguments;
 149
 150     while ((cp = *argp++)) {
 151         if (*cp == '-') {
 152             switch (smatch (++cp, switches)) {
 153                 case AMBIGSW:
 154                     ambigsw (cp, switches);
 155                     done (1);
 156                 case UNKWNSW:
 157                     adios (NULL, "-%s unknown", cp);
 158
 159                 case HELPSW:
 160                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 161                         invo_name);
 162                     print_help (buf, switches, 1);
 163                     done (1);
 164                 case VERSIONSW:
 165                     print_version(invo_name);
 166                     done (1);
 167
 168                 case ANNOSW:
 169                     anot++;
 170                     continue;
 171                 case NANNOSW:
 172                     anot = 0;
 173                     continue;
 174
 175                 case EDITRSW:
 176                     if (!(ed = *argp++) || *ed == '-')
 177                         adios (NULL, "missing argument to %s", argp[-2]);
 178                     nedit = 0;
 179                     continue;
 180                 case NEDITSW:
 181                     nedit++;
 182                     continue;
 183
 184                 case WHATSW:
 185                     if (!(whatnowproc = *argp++) || *whatnowproc == '-')
 186                         adios (NULL, "missing argument to %s", argp[-2]);
 187                     nwhat = 0;
 188                     continue;
 189 #ifdef MHE
 190                 case BILDSW:
 191                     buildsw++;  /* fall... */
 192 #endif /* MHE */
 193                 case NWHATSW:
 194                     nwhat++;
 195                     continue;
 196
 197                 case FILESW:
 198                     if (file)
 199                         adios (NULL, "only one file at a time!");
 200                     if (!(cp = *argp++) || *cp == '-')
 201                         adios (NULL, "missing argument to %s", argp[-2]);
 202                     file = path (cp, TFILE);
 203                     continue;
 204                 case FILTSW:
 205                     if (!(cp = *argp++) || *cp == '-')
 206                         adios (NULL, "missing argument to %s", argp[-2]);
 207                     filter = getcpy (etcpath (cp));
 208                     mime = 0;
 209                     continue;
 210                 case FORMSW:
 211                     if (!(form = *argp++) || *form == '-')
 212                         adios (NULL, "missing argument to %s", argp[-2]);
 213                     continue;
 214
 215                 case FRMTSW:
 216                     filter = getcpy (etcpath (mhlforward));
 217                     continue;
 218                 case NFRMTSW:
 219                     filter = NULL;
 220                     continue;
 221
 222                 case INPLSW:
 223                     inplace++;
 224                     continue;
 225                 case NINPLSW:
 226                     inplace = 0;
 227                     continue;
 228
 229                 case MIMESW:
 230                     mime++;
 231                     filter = NULL;
 232                     continue;
 233                 case NMIMESW:
 234                     mime = 0;
 235                     continue;
 236
 237                 case DGSTSW:
 238                     if (!(digest = *argp++) || *digest == '-')
 239                         adios (NULL, "missing argument to %s", argp[-2]);
 240                     mime = 0;
 241                     continue;
 242                 case ISSUESW:
 243                     if (!(cp = *argp++) || *cp == '-')
 244                         adios (NULL, "missing argument to %s", argp[-2]);
 245                     if ((issue = atoi (cp)) < 1)
 246                         adios (NULL, "bad argument %s %s", argp[-2], cp);
 247                     continue;
 248                 case VOLUMSW:
 249                     if (!(cp = *argp++) || *cp == '-')
 250                         adios (NULL, "missing argument to %s", argp[-2]);
 251                     if ((volume = atoi (cp)) < 1)
 252                         adios (NULL, "bad argument %s %s", argp[-2], cp);
 253                     continue;
 254
 255                 case DFOLDSW:
 256                     if (dfolder)
 257                         adios (NULL, "only one draft folder at a time!");
 258                     if (!(cp = *argp++) || *cp == '-')
 259                         adios (NULL, "missing argument to %s", argp[-2]);
 260                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 261                                     *cp != '@' ? TFOLDER : TSUBCWF);
 262                     continue;
 263                 case DMSGSW:
 264                     if (dmsg)
 265                         adios (NULL, "only one draft message at a time!");
 266                     if (!(dmsg = *argp++) || *dmsg == '-')
 267                         adios (NULL, "missing argument to %s", argp[-2]);
 268                     continue;
 269                 case NDFLDSW:
 270                     dfolder = NULL;
 271                     isdf = NOTOK;
 272                     continue;
 273
 274                 case BITSTUFFSW:
 275                     dashstuff = 1;      /* trinary logic */
 276                     continue;
 277                 case NBITSTUFFSW:
 278                     dashstuff = -1;     /* trinary logic */
 279                     continue;
 280             }
 281         }
 282         if (*cp == '+' || *cp == '@') {
 283             if (folder)
 284                 adios (NULL, "only one folder at a time!");
 285             else
 286                 folder = pluspath (cp);
 287         } else {
 288             msgs[msgp++] = cp;
 289         }
 290     }
 291
 292     cwd = getcpy (pwd ());
 293
 294     if (!context_find ("path"))
 295         free (path ("./", TFOLDER));
 296     if (file && (msgp || folder))
 297         adios (NULL, "can't mix files and folders/msgs");
 298
 299 try_it_again:
 300
 301 #ifdef MHE
 302     strncpy (drft, buildsw ? m_maildir ("draft")
 303                           : m_draft (dfolder, NULL, NOUSE, &isdf), sizeof(drft));
 304
 305     /* Check if a draft already exists */
 306     if (!buildsw && stat (drft, &st) != NOTOK) {
 307 #else
 308     strncpy (drft, m_draft (dfolder, dmsg, NOUSE, &isdf), sizeof(drft));
 309
 310     /* Check if a draft already exists */
 311     if (stat (drft, &st) != NOTOK) {
 312 #endif  /* MHE */
 313         printf ("Draft \"%s\" exists (%ld bytes).", drft, (long) st.st_size);
 314         for (i = LISTDSW; i != YESW;) {
 315             if (!(argp = getans ("\nDisposition? ", isdf ? aqrnl : aqrl)))
 316                 done (1);
 317             switch (i = smatch (*argp, isdf ? aqrnl : aqrl)) {
 318                 case NOSW:
 319                     done (0);
 320                 case NEWSW:
 321                     dmsg = NULL;
 322                     goto try_it_again;
 323                 case YESW:
 324                     break;
 325                 case LISTDSW:
 326                     showfile (++argp, drft);
 327                     break;
 328                 case REFILSW:
 329                     if (refile (++argp, drft) == 0)
 330                         i = YESW;
 331                     break;
 332                 default:
 333                     advise (NULL, "say what?");
 334                     break;
 335             }
 336         }
 337     }
 338
 339     if (file) {
 340         /*
 341          * Forwarding a file.
 342          */
 343         anot = 0;       /* don't want to annotate a file */
 344     } else {
 345         /*
 346          * Forwarding a message.
 347          */
 348         if (!msgp)
 349             msgs[msgp++] = "cur";
 350         if (!folder)
 351             folder = getfolder (1);
 352         maildir = m_maildir (folder);
 353
 354         if (chdir (maildir) == NOTOK)
 355             adios (maildir, "unable to change directory to");
 356
 357         /* read folder and create message structure */
 358         if (!(mp = folder_read (folder)))
 359             adios (NULL, "unable to read folder %s", folder);
 360
 361         /* check for empty folder */
 362         if (mp->nummsg == 0)
 363             adios (NULL, "no messages in %s", folder);
 364
 365         /* parse all the message ranges/sequences and set SELECTED */
 366         for (msgnum = 0; msgnum < msgp; msgnum++)
 367             if (!m_convert (mp, msgs[msgnum]))
 368                 done (1);
 369         seq_setprev (mp);       /* set the previous sequence */
 370     }
 371
 372     if (filter && access (filter, R_OK) == NOTOK)
 373         adios (filter, "unable to read");
 374
 375     /*
 376      * Open form (component) file.
 377      */
 378     if (digest) {
 379         if (issue == 0) {
 380             snprintf (buf, sizeof(buf), IFORMAT, digest);
 381             if (volume == 0
 382                     && (cp = context_find (buf))
 383                     && ((issue = atoi (cp)) < 0))
 384                 issue = 0;
 385             issue++;
 386         }
 387         if (volume == 0)
 388             snprintf (buf, sizeof(buf), VFORMAT, digest);
 389         if ((cp = context_find (buf)) == NULL || (volume = atoi (cp)) <= 0)
 390             volume = 1;
 391         if (!form)
 392             form = digestcomps;
 393         in = build_form (form, digest, volume, issue);
 394     } else
 395         in = open_form(&form, forwcomps);
 396
 397     if ((out = creat (drft, m_gmprot ())) == NOTOK)
 398         adios (drft, "unable to create");
 399
 400     /*
 401      * copy the components into the draft
 402      */
 403     cpydata (in, out, form, drft);
 404     close (in);
 405
 406     if (file) {
 407         /* just copy the file into the draft */
 408         if ((in = open (file, O_RDONLY)) == NOTOK)
 409             adios (file, "unable to open");
 410         cpydata (in, out, file, drft);
 411         close (in);
 412         close (out);
 413     } else {
 414         /*
 415          * If filter file is defined, then format the
 416          * messages into the draft using mhlproc.
 417          */
 418         if (filter)
 419             mhl_draft (out, digest, volume, issue, drft, filter, dashstuff);
 420         else if (mime)
 421             copy_mime_draft (out);
 422         else
 423             copy_draft (out, digest, drft, volume, issue, dashstuff);
 424         close (out);
 425
 426         if (digest) {
 427             snprintf (buf, sizeof(buf), IFORMAT, digest);
 428             snprintf (value, sizeof(value), "%d", issue);
 429             context_replace (buf, getcpy (value));
 430             snprintf (buf, sizeof(buf), VFORMAT, digest);
 431             snprintf (value, sizeof(value), "%d", volume);
 432             context_replace (buf, getcpy (value));
 433         }
 434
 435         context_replace (pfolder, folder);      /* update current folder   */
 436         seq_setcur (mp, mp->lowsel);            /* update current message  */
 437         seq_save (mp);                          /* synchronize sequences   */
 438         context_save ();                        /* save the context file   */
 439     }
 440
 441     if (nwhat)
 442         done (0);
 443     what_now (ed, nedit, NOUSE, drft, NULL, 0, mp,
 444         anot ? "Forwarded" : NULL, inplace, cwd);
 445     done (1);
 446     return 1;
 447 }
 448
 449
 450 /*
 451  * Filter the messages you are forwarding, into the
 452  * draft calling the mhlproc, and reading its output
 453  * from a pipe.
 454  */
 455
 456 static void
 457 mhl_draft (int out, char *digest, int volume, int issue,
 458             char *file, char *filter, int dashstuff)
 459 {
 460     pid_t child_id;
 461     int i, msgnum, pd[2];
 462     char *vec[MAXARGS];
 463     char buf1[BUFSIZ];
 464     char buf2[BUFSIZ];
 465
 466     if (pipe (pd) == NOTOK)
 467         adios ("pipe", "unable to create");
 468
 469     vec[0] = r1bindex (mhlproc, '/');
 470
 471     for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 472         sleep (5);
 473     switch (child_id) {
 474         case NOTOK:
 475             adios ("fork", "unable to");
 476
 477         case OK:
 478             close (pd[0]);
 479             dup2 (pd[1], 1);
 480             close (pd[1]);
 481
 482             i = 1;
 483             vec[i++] = "-forwall";
 484             vec[i++] = "-form";
 485             vec[i++] = filter;
 486
 487             if (digest) {
 488                 vec[i++] = "-digest";
 489                 vec[i++] = digest;
 490                 vec[i++] = "-issue";
 491                 snprintf (buf1, sizeof(buf1), "%d", issue);
 492                 vec[i++] = buf1;
 493                 vec[i++] = "-volume";
 494                 snprintf (buf2, sizeof(buf2), "%d", volume);
 495                 vec[i++] = buf2;
 496             }
 497
 498             /*
 499              * Are we dashstuffing (quoting) the lines that begin
 500              * with `-'.  We use the mhl default (don't add any flag)
 501              * unless the user has specified a specific flag.
 502              */
 503             if (dashstuff > 0)
 504                 vec[i++] = "-dashstuffing";
 505             else if (dashstuff < 0)
 506                 vec[i++] = "-nodashstuffing";
 507
 508             if (mp->numsel >= MAXARGS - i)
 509                 adios (NULL, "more than %d messages for %s exec",
 510                         MAXARGS - i, vec[0]);
 511
 512             /*
 513              * Now add the message names to filter.  We can only
 514              * handle about 995 messages (because vec is fixed size),
 515              * but that should be plenty.
 516              */
 517             for (msgnum = mp->lowsel; msgnum <= mp->hghsel && i < sizeof(vec) - 1;
 518                         msgnum++)
 519                 if (is_selected (mp, msgnum))
 520                     vec[i++] = getcpy (m_name (msgnum));
 521             vec[i] = NULL;
 522
 523             execvp (mhlproc, vec);
 524             fprintf (stderr, "unable to exec ");
 525             perror (mhlproc);
 526             _exit (-1);
 527
 528         default:
 529             close (pd[1]);
 530             cpydata (pd[0], out, vec[0], file);
 531             close (pd[0]);
 532             pidXwait(child_id, mhlproc);
 533             break;
 534     }
 535 }
 536
 537
 538 /*
 539  * Copy the messages into the draft.  The messages are
 540  * not filtered through the mhlproc.  Do dashstuffing if
 541  * necessary.
 542  */
 543
 544 static void
 545 copy_draft (int out, char *digest, char *file, int volume, int issue, int dashstuff)
 546 {
 547     int fd,i, msgcnt, msgnum;
 548     int len, buflen;
 549     register char *bp, *msgnam;
 550     char buffer[BUFSIZ];
 551
 552     msgcnt = 1;
 553     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 554         if (is_selected (mp, msgnum)) {
 555             if (digest) {
 556                 strncpy (buffer, msgnum == mp->lowsel ? delim3 : delim4,
 557                         sizeof(buffer));
 558             } else {
 559                 /* Get buffer ready to go */
 560                 bp = buffer;
 561                 buflen = sizeof(buffer);
 562
 563                 strncpy (bp, "\n-------", buflen);
 564                 len = strlen (bp);
 565                 bp += len;
 566                 buflen -= len;
 567
 568                 if (msgnum == mp->lowsel) {
 569                     snprintf (bp, buflen, " Forwarded Message%s",
 570                         mp->numsel > 1 ? "s" : "");
 571                 } else {
 572                     snprintf (bp, buflen, " Message %d", msgcnt);
 573                 }
 574                 len = strlen (bp);
 575                 bp += len;
 576                 buflen -= len;
 577
 578                 strncpy (bp, "\n\n", buflen);
 579             }
 580             write (out, buffer, strlen (buffer));
 581
 582             if ((fd = open (msgnam = m_name (msgnum), O_RDONLY)) == NOTOK) {
 583                 admonish (msgnam, "unable to read message");
 584                 continue;
 585             }
 586
 587             /*
 588              * Copy the message.  Add RFC934 quoting (dashstuffing)
 589              * unless given the -nodashstuffing flag.
 590              */
 591             if (dashstuff >= 0)
 592                 cpydgst (fd, out, msgnam, file);
 593             else
 594                 cpydata (fd, out, msgnam, file);
 595
 596             close (fd);
 597             msgcnt++;
 598         }
 599     }
 600
 601     if (digest) {
 602         strncpy (buffer, delim4, sizeof(buffer));
 603     } else {
 604         snprintf (buffer, sizeof(buffer), "\n------- End of Forwarded Message%s\n\n",
 605                 mp->numsel > 1 ? "s" : "");
 606     }
 607     write (out, buffer, strlen (buffer));
 608
 609     if (digest) {
 610         snprintf (buffer, sizeof(buffer), "End of %s Digest [Volume %d Issue %d]\n",
 611                 digest, volume, issue);
 612         i = strlen (buffer);
 613         for (bp = buffer + i; i > 1; i--)
 614             *bp++ = '*';
 615         *bp++ = '\n';
 616         *bp = 0;
 617         write (out, buffer, strlen (buffer));
 618     }
 619 }
 620
 621
 622 /*
 623  * Create a mhn composition file for forwarding message.
 624  */
 625
 626 static void
 627 copy_mime_draft (int out)
 628 {
 629     int msgnum;
 630     char buffer[BUFSIZ];
 631
 632     snprintf (buffer, sizeof(buffer), "#forw [forwarded message%s] +%s",
 633         mp->numsel == 1 ? "" : "s", mp->foldpath);
 634     write (out, buffer, strlen (buffer));
 635     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 636         if (is_selected (mp, msgnum)) {
 637             snprintf (buffer, sizeof(buffer), " %s", m_name (msgnum));
 638             write (out, buffer, strlen (buffer));
 639         }
 640     write (out, "\n", 1);
 641 }
 642
 643
 644 static int
 645 build_form (char *form, char *digest, int volume, int issue)
 646 {
 647     int in;
 648     int fmtsize;
 649     register char *nfs;
 650     char *line, tmpfil[BUFSIZ];
 651     FILE *tmp;
 652     register struct comp *cptr;
 653     struct format *fmt;
 654     int dat[5];
 655     char *cp = NULL;
 656
 657     /* Get new format string */
 658     nfs = new_fs (form, NULL, NULL);
 659     fmtsize = strlen (nfs) + 256;
 660
 661     /* Compile format string */
 662     fmt_compile (nfs, &fmt);
 663
 664     FINDCOMP (cptr, "digest");
 665     if (cptr)
 666         cptr->c_text = digest;
 667     FINDCOMP (cptr, "date");
 668     if (cptr)
 669         cptr->c_text = getcpy(dtimenow (0));
 670
 671     dat[0] = issue;
 672     dat[1] = volume;
 673     dat[2] = 0;
 674     dat[3] = fmtsize;
 675     dat[4] = 0;
 676
 677     cp = m_mktemp2(NULL, invo_name, NULL, &tmp);
 678     if (cp == NULL) adios("forw", "unable to create temporary file");
 679     strncpy (tmpfil, cp, sizeof(tmpfil));
 680     unlink (tmpfil);
 681     if ((in = dup (fileno (tmp))) == NOTOK)
 682         adios ("dup", "unable to");
 683
 684     line = mh_xmalloc ((unsigned) fmtsize);
 685     fmt_scan (fmt, line, fmtsize, dat);
 686     fputs (line, tmp);
 687     free (line);
 688     if (fclose (tmp))
 689         adios (tmpfil, "error writing");
 690
 691     lseek (in, (off_t) 0, SEEK_SET);
 692     return in;
 693 }