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