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