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