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 = mh_xstrdup(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 = mh_xstrdup(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 = mh_xstrdup(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 = read_switch_multiword ("\nDisposition? ",
 317                                                 isdf ? aqrnl : aqrl)))
 318                 done (1);
 319             switch (i = smatch (*argp, isdf ? aqrnl : aqrl)) {
 320                 case NOSW:
 321                     done (0);
 322                 case NEWSW:
 323                     dmsg = NULL;
 324                     goto try_it_again;
 325                 case YESW:
 326                     break;
 327                 case LISTDSW:
 328                     showfile (++argp, drft);
 329                     break;
 330                 case REFILSW:
 331                     if (refile (++argp, drft) == 0)
 332                         i = YESW;
 333                     break;
 334                 default:
 335                     advise (NULL, "say what?");
 336                     break;
 337             }
 338         }
 339     }
 340
 341     if (file) {
 342         /*
 343          * Forwarding a file.
 344          */
 345         anot = 0;       /* don't want to annotate a file */
 346     } else {
 347         /*
 348          * Forwarding a message.
 349          */
 350         if (!msgs.size)
 351             app_msgarg(&msgs, "cur");
 352         if (!folder)
 353             folder = getfolder (1);
 354         maildir = m_maildir (folder);
 355
 356         if (chdir (maildir) == NOTOK)
 357             adios (maildir, "unable to change directory to");
 358
 359         /* read folder and create message structure */
 360         if (!(mp = folder_read (folder, 1)))
 361             adios (NULL, "unable to read folder %s", folder);
 362
 363         /* check for empty folder */
 364         if (mp->nummsg == 0)
 365             adios (NULL, "no messages in %s", folder);
 366
 367         /* parse all the message ranges/sequences and set SELECTED */
 368         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 369             if (!m_convert (mp, msgs.msgs[msgnum]))
 370                 done (1);
 371
 372         seq_setprev (mp);       /* set the previous sequence */
 373
 374         /*
 375          * Find the first message in our set and use it as the input
 376          * for the component scanner
 377          */
 378
 379         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 380             if (is_selected (mp, msgnum)) {
 381                 fwdmsg = strdup(m_name(msgnum));
 382                 break;
 383             }
 384
 385         if (! fwdmsg)
 386             adios (NULL, "Unable to find input message");
 387     }
 388
 389     if (filter && access (filter, R_OK) == NOTOK)
 390         adios (filter, "unable to read");
 391
 392     /*
 393      * Open form (component) file.
 394      */
 395     if (digest) {
 396         if (issue == 0) {
 397             snprintf (buf, sizeof(buf), IFORMAT, digest);
 398             if (volume == 0
 399                     && (cp = context_find (buf))
 400                     && ((issue = atoi (cp)) < 0))
 401                 issue = 0;
 402             issue++;
 403         }
 404         if (volume == 0) {
 405             snprintf (buf, sizeof(buf), VFORMAT, digest);
 406             if ((cp = context_find (buf)) == NULL || (volume = atoi (cp)) <= 0)
 407                 volume = 1;
 408         }
 409         if (!form)
 410             form = digestcomps;
 411     } else {
 412         if (!form)
 413             form = forwcomps;
 414     }
 415
 416     dat[0] = digest ? issue : msgnum;
 417     dat[1] = volume;
 418     dat[2] = 0;
 419     dat[3] = outputlinelen;
 420     dat[4] = 0;
 421
 422
 423     in = build_form (form, digest, dat, from, to, cc, fcc, subject,
 424                      file ? file : fwdmsg);
 425
 426     if ((out = creat (drft, m_gmprot ())) == NOTOK)
 427         adios (drft, "unable to create");
 428
 429     /*
 430      * copy the components into the draft
 431      */
 432     cpydata (in, out, form, drft);
 433     close (in);
 434
 435     if (file) {
 436         /* just copy the file into the draft */
 437         if ((in = open (file, O_RDONLY)) == NOTOK)
 438             adios (file, "unable to open");
 439         cpydata (in, out, file, drft);
 440         close (in);
 441         close (out);
 442     } else {
 443         /*
 444          * If filter file is defined, then format the
 445          * messages into the draft using mhlproc.
 446          */
 447         if (filter)
 448             mhl_draft (out, digest, volume, issue, drft, filter, dashstuff);
 449         else if (mime)
 450             copy_mime_draft (out);
 451         else
 452             copy_draft (out, digest, drft, volume, issue, dashstuff);
 453         close (out);
 454
 455         if (digest) {
 456             snprintf (buf, sizeof(buf), IFORMAT, digest);
 457             snprintf (value, sizeof(value), "%d", issue);
 458             context_replace (buf, mh_xstrdup(value));
 459             snprintf (buf, sizeof(buf), VFORMAT, digest);
 460             snprintf (value, sizeof(value), "%d", volume);
 461             context_replace (buf, mh_xstrdup(value));
 462         }
 463
 464         context_replace (pfolder, folder);      /* update current folder   */
 465         seq_setcur (mp, mp->lowsel);            /* update current message  */
 466         seq_save (mp);                          /* synchronize sequences   */
 467         context_save ();                        /* save the context file   */
 468     }
 469
 470     if (nwhat)
 471         done (0);
 472     what_now (ed, nedit, NOUSE, drft, NULL, 0, mp,
 473         anot ? "Forwarded" : NULL, inplace, cwd, 0);
 474     done (1);
 475     return 1;
 476 }
 477
 478
 479 /*
 480  * Filter the messages you are forwarding, into the
 481  * draft calling the mhlproc, and reading its output
 482  * from a pipe.
 483  */
 484
 485 static void
 486 mhl_draft (int out, char *digest, int volume, int issue,
 487             char *file, char *filter, int dashstuff)
 488 {
 489     pid_t child_id;
 490     int i, msgnum, pd[2];
 491     char buf1[BUFSIZ];
 492     char buf2[BUFSIZ];
 493     char *program;
 494     struct msgs_array vec = { 0, 0, NULL };
 495
 496     if (pipe (pd) == NOTOK)
 497         adios ("pipe", "unable to create");
 498
 499     argsplit_msgarg(&vec, mhlproc, &program);
 500
 501     for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 502         sleep (5);
 503
 504     switch (child_id) {
 505         case NOTOK:
 506             adios ("fork", "unable to");
 507
 508         case OK:
 509             close (pd[0]);
 510             dup2 (pd[1], 1);
 511             close (pd[1]);
 512
 513             app_msgarg(&vec, "-forwall");
 514             app_msgarg(&vec, "-form");
 515             app_msgarg(&vec, filter);
 516
 517             if (digest) {
 518                 app_msgarg(&vec, "-digest");
 519                 app_msgarg(&vec, digest);
 520                 app_msgarg(&vec, "-issue");
 521                 snprintf (buf1, sizeof(buf1), "%d", issue);
 522                 app_msgarg(&vec, buf1);
 523                 app_msgarg(&vec, "-volume");
 524                 snprintf (buf2, sizeof(buf2), "%d", volume);
 525                 app_msgarg(&vec, buf2);
 526             }
 527
 528             /*
 529              * Are we dashstuffing (quoting) the lines that begin
 530              * with `-'.  We use the mhl default (don't add any flag)
 531              * unless the user has specified a specific flag.
 532              */
 533             if (dashstuff > 0)
 534                 app_msgarg(&vec, "-dashstuffing");
 535             else if (dashstuff < 0)
 536                 app_msgarg(&vec, "-nodashstuffing");
 537
 538             for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 539                 if (is_selected (mp, msgnum))
 540                     app_msgarg(&vec, mh_xstrdup(m_name (msgnum)));
 541             }
 542
 543             app_msgarg(&vec, NULL);
 544
 545             execvp (program, vec.msgs);
 546             fprintf (stderr, "unable to exec ");
 547             perror (mhlproc);
 548             _exit (-1);
 549
 550         default:
 551             close (pd[1]);
 552             cpydata (pd[0], out, vec.msgs[0], file);
 553             close (pd[0]);
 554             pidXwait(child_id, mhlproc);
 555             break;
 556     }
 557 }
 558
 559
 560 /*
 561  * Copy the messages into the draft.  The messages are
 562  * not filtered through the mhlproc.  Do dashstuffing if
 563  * necessary.
 564  */
 565
 566 static void
 567 copy_draft (int out, char *digest, char *file, int volume, int issue, int dashstuff)
 568 {
 569     int fd,i, msgcnt, msgnum;
 570     int len, buflen;
 571     char *bp, *msgnam;
 572     char buffer[BUFSIZ];
 573
 574     msgcnt = 1;
 575     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 576         if (is_selected (mp, msgnum)) {
 577             if (digest) {
 578                 strncpy (buffer, msgnum == mp->lowsel ? delim3 : delim4,
 579                         sizeof(buffer));
 580             } else {
 581                 /* Get buffer ready to go */
 582                 bp = buffer;
 583                 buflen = sizeof(buffer);
 584
 585                 strncpy (bp, "\n-------", buflen);
 586                 len = strlen (bp);
 587                 bp += len;
 588                 buflen -= len;
 589
 590                 if (msgnum == mp->lowsel) {
 591                     snprintf (bp, buflen, " Forwarded Message%s",
 592                         mp->numsel > 1 ? "s" : "");
 593                 } else {
 594                     snprintf (bp, buflen, " Message %d", msgcnt);
 595                 }
 596                 len = strlen (bp);
 597                 bp += len;
 598                 buflen -= len;
 599
 600                 strncpy (bp, "\n\n", buflen);
 601             }
 602             if (write (out, buffer, strlen (buffer)) < 0) {
 603                 advise (drft, "write");
 604             }
 605
 606             if ((fd = open (msgnam = m_name (msgnum), O_RDONLY)) == NOTOK) {
 607                 admonish (msgnam, "unable to read message");
 608                 continue;
 609             }
 610
 611             /*
 612              * Copy the message.  Add RFC934 quoting (dashstuffing)
 613              * unless given the -nodashstuffing flag.
 614              */
 615             if (dashstuff >= 0)
 616                 cpydgst (fd, out, msgnam, file);
 617             else
 618                 cpydata (fd, out, msgnam, file);
 619
 620             close (fd);
 621             msgcnt++;
 622         }
 623     }
 624
 625     if (digest) {
 626         strncpy (buffer, delim4, sizeof(buffer));
 627     } else {
 628         snprintf (buffer, sizeof(buffer), "\n------- End of Forwarded Message%s\n",
 629                 mp->numsel > 1 ? "s" : "");
 630     }
 631     if (write (out, buffer, strlen (buffer)) < 0) {
 632         advise (drft, "write");
 633     }
 634
 635     if (digest) {
 636         snprintf (buffer, sizeof(buffer), "End of %s Digest [Volume %d Issue %d]\n",
 637                 digest, volume, issue);
 638         i = strlen (buffer);
 639         for (bp = buffer + i; i > 1; i--)
 640             *bp++ = '*';
 641         *bp++ = '\n';
 642         *bp = 0;
 643         if (write (out, buffer, strlen (buffer)) < 0) {
 644             advise (drft, "write");
 645         }
 646     }
 647 }
 648
 649
 650 /*
 651  * Create a mhn composition file for forwarding message.
 652  */
 653
 654 static void
 655 copy_mime_draft (int out)
 656 {
 657     int msgnum;
 658     char buffer[BUFSIZ];
 659
 660     snprintf (buffer, sizeof(buffer), "#forw [forwarded message%s] +%s",
 661         mp->numsel == 1 ? "" : "s", mp->foldpath);
 662     if (write (out, buffer, strlen (buffer)) < 0) {
 663         advise (drft, "write");
 664     }
 665     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 666         if (is_selected (mp, msgnum)) {
 667             snprintf (buffer, sizeof(buffer), " %s", m_name (msgnum));
 668             if (write (out, buffer, strlen (buffer)) < 0) {
 669                 advise (drft, "write");
 670             }
 671         }
 672     if (write (out, "\n", 1) < 0) {
 673         advise (drft, "write newline");
 674     }
 675 }