git.marmaro.de Git - mmh/blob - uip/forw.c

   1 /*
   2 ** forw.c -- forward a message, or group of messages.
   3 **
   4 ** This code is Copyright (c) 2002, by the authors of nmh.  See the
   5 ** COPYRIGHT file in the root directory of the nmh distribution for
   6 ** complete copyright information.
   7 */
   8
   9 #include <h/mh.h>
  10 #include <fcntl.h>
  11 #include <h/fmt_scan.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 EDITRSW  2
  25         { "editor editor", 0 },
  26 #define NEDITSW  3
  27         { "noedit", 0 },
  28 #define FILTSW  4
  29         { "filter filterfile", 0 },
  30 #define FORMSW  5
  31         { "form formfile", 0 },
  32 #define FRMTSW  6
  33         { "format", 5 },
  34 #define NFRMTSW  7
  35         { "noformat", 7 },
  36 #define INPLSW  8
  37         { "inplace", 0 },
  38 #define NINPLSW  9
  39         { "noinplace", 0 },
  40 #define MIMESW  10
  41         { "mime", 0 },
  42 #define NMIMESW  11
  43         { "nomime", 0 },
  44 #define DGSTSW  12
  45         { "digest list", 0 },
  46 #define ISSUESW  13
  47         { "issue number", 0 },
  48 #define VOLUMSW  14
  49         { "volume number", 0 },
  50 #define WHATSW  15
  51         { "whatnowproc program", 0 },
  52 #define NWHATSW  16
  53         { "nowhatnowproc", 0 },
  54 #define BITSTUFFSW  17
  55         { "dashstuffing", 0 },  /* interface to mhl */
  56 #define NBITSTUFFSW  18
  57         { "nodashstuffing", 0 },
  58 #define VERSIONSW  19
  59         { "version", 0 },
  60 #define HELPSW  20
  61         { "help", 0 },
  62 #define FILESW  21
  63         { "file file", 4 },  /* interface from msh */
  64
  65 #ifdef MHE
  66 #define BILDSW  22
  67         { "build", 5 },  /* interface from mhe */
  68 #endif /* MHE */
  69
  70         { NULL, 0 }
  71 };
  72
  73 static char drft[BUFSIZ];
  74
  75 static char delim3[] =
  76         "\n------------------------------------------------------------\n\n";
  77 static char delim4[] = "\n------------------------------\n\n";
  78
  79
  80 static struct msgs *mp = NULL;  /* used a lot */
  81
  82
  83 /*
  84 ** static prototypes
  85 */
  86 static void mhl_draft(int, char *, int, int, char *, char *, int);
  87 static void copy_draft(int, char *, char *, int, int, int);
  88 static void copy_mime_draft(int);
  89 static int build_form(char *, char *, int, int);
  90
  91
  92 int
  93 main(int argc, char **argv)
  94 {
  95         int msgp = 0, anot = 0, inplace = 1, mime = 0;
  96         int issue = 0, volume = 0, dashstuff = 0;
  97         int nedit = 0, nwhat = 0, in;
  98         int out, msgnum;
  99         char *cp, *cwd, *maildir;
 100         char *digest = NULL, *ed = NULL;
 101         char *file = NULL, *filter = NULL, *folder = NULL;
 102         char *form = NULL, buf[BUFSIZ], value[10];
 103         char **argp, **arguments, *msgs[MAXARGS];
 104
 105 #ifdef MHE
 106         int buildsw = 0;
 107 #endif /* MHE */
 108
 109 #ifdef LOCALE
 110         setlocale(LC_ALL, "");
 111 #endif
 112         invo_name = r1bindex(argv[0], '/');
 113
 114         /* read user profile/context */
 115         context_read();
 116
 117         arguments = getarguments(invo_name, argc, argv, 1);
 118         argp = arguments;
 119
 120         while ((cp = *argp++)) {
 121                 if (*cp == '-') {
 122                         switch (smatch(++cp, switches)) {
 123                                 case AMBIGSW:
 124                                         ambigsw(cp, switches);
 125                                         done(1);
 126                                 case UNKWNSW:
 127                                         adios(NULL, "-%s unknown", cp);
 128
 129                                 case HELPSW:
 130                                         snprintf(buf, sizeof(buf), "%s [+folder] [msgs] [switches]", invo_name);
 131                                         print_help(buf, switches, 1);
 132                                         done(1);
 133                                 case VERSIONSW:
 134                                         print_version(invo_name);
 135                                         done(1);
 136
 137                                 case ANNOSW:
 138                                         anot++;
 139                                         continue;
 140                                 case NANNOSW:
 141                                         anot = 0;
 142                                         continue;
 143
 144                                 case EDITRSW:
 145                                         if (!(ed = *argp++) || *ed == '-')
 146                                                 adios(NULL, "missing argument to %s", argp[-2]);
 147                                         nedit = 0;
 148                                         continue;
 149                                 case NEDITSW:
 150                                         nedit++;
 151                                         continue;
 152
 153                                 case WHATSW:
 154                                         if (!(whatnowproc = *argp++) || *whatnowproc == '-')
 155                                                 adios(NULL, "missing argument to %s", argp[-2]);
 156                                         nwhat = 0;
 157                                         continue;
 158 #ifdef MHE
 159                                 case BILDSW:
 160                                         buildsw++;  /* fall... */
 161 #endif /* MHE */
 162                                 case NWHATSW:
 163                                         nwhat++;
 164                                         continue;
 165
 166                                 case FILESW:
 167                                         if (file)
 168                                                 adios(NULL, "only one file at a time!");
 169                                         if (!(cp = *argp++) || *cp == '-')
 170                                                 adios(NULL, "missing argument to %s", argp[-2]);
 171                                         file = path(cp, TFILE);
 172                                         continue;
 173                                 case FILTSW:
 174                                         if (!(cp = *argp++) || *cp == '-')
 175                                                 adios(NULL, "missing argument to %s", argp[-2]);
 176                                         filter = getcpy(etcpath(cp));
 177                                         mime = 0;
 178                                         continue;
 179                                 case FORMSW:
 180                                         if (!(form = *argp++) || *form == '-')
 181                                                 adios(NULL, "missing argument to %s", argp[-2]);
 182                                         continue;
 183
 184                                 case FRMTSW:
 185                                         filter = getcpy(etcpath(mhlforward));
 186                                         continue;
 187                                 case NFRMTSW:
 188                                         filter = NULL;
 189                                         continue;
 190
 191                                 case INPLSW:
 192                                         inplace++;
 193                                         continue;
 194                                 case NINPLSW:
 195                                         inplace = 0;
 196                                         continue;
 197
 198                                 case MIMESW:
 199                                         mime++;
 200                                         filter = NULL;
 201                                         continue;
 202                                 case NMIMESW:
 203                                         mime = 0;
 204                                         continue;
 205
 206                                 case DGSTSW:
 207                                         if (!(digest = *argp++) || *digest == '-')
 208                                                 adios(NULL, "missing argument to %s", argp[-2]);
 209                                         mime = 0;
 210                                         continue;
 211                                 case ISSUESW:
 212                                         if (!(cp = *argp++) || *cp == '-')
 213                                                 adios(NULL, "missing argument to %s", argp[-2]);
 214                                         if ((issue = atoi(cp)) < 1)
 215                                                 adios(NULL, "bad argument %s %s", argp[-2], cp);
 216                                         continue;
 217                                 case VOLUMSW:
 218                                         if (!(cp = *argp++) || *cp == '-')
 219                                                 adios(NULL, "missing argument to %s", argp[-2]);
 220                                         if ((volume = atoi(cp)) < 1)
 221                                                 adios(NULL, "bad argument %s %s", argp[-2], cp);
 222                                         continue;
 223
 224                                 case BITSTUFFSW:
 225                                         dashstuff = 1;  /* trinary logic */
 226                                         continue;
 227                                 case NBITSTUFFSW:
 228                                         dashstuff = -1;  /* trinary logic */
 229                                         continue;
 230                         }
 231                 }
 232                 if (*cp == '+' || *cp == '@') {
 233                         if (folder)
 234                                 adios(NULL, "only one folder at a time!");
 235                         else
 236                                 folder = pluspath(cp);
 237                 } else {
 238                         msgs[msgp++] = cp;
 239                 }
 240         }
 241
 242         cwd = getcpy(pwd());
 243
 244         if (!context_find("path"))
 245                 free(path("./", TFOLDER));
 246         if (file && (msgp || folder))
 247                 adios(NULL, "can't mix files and folders/msgs");
 248
 249 #ifdef MHE
 250         strncpy(drft, buildsw ? m_maildir("draft")
 251                 : m_draft("new"), sizeof(drft));
 252 #else
 253         strncpy(drft, m_draft("new"), sizeof(drft));
 254 #endif /* MHE */
 255
 256         if (file) {
 257                 /*
 258                 ** Forwarding a file.
 259                 */
 260                 anot = 0;  /* don't want to annotate a file */
 261         } else {
 262                 /*
 263                 ** Forwarding a message.
 264                 */
 265                 if (!msgp)
 266                         msgs[msgp++] = "cur";
 267                 if (!folder)
 268                         folder = getfolder(1);
 269                 maildir = m_maildir(folder);
 270
 271                 if (chdir(maildir) == NOTOK)
 272                         adios(maildir, "unable to change directory to");
 273
 274                 /* read folder and create message structure */
 275                 if (!(mp = folder_read(folder)))
 276                         adios(NULL, "unable to read folder %s", folder);
 277
 278                 /* check for empty folder */
 279                 if (mp->nummsg == 0)
 280                         adios(NULL, "no messages in %s", folder);
 281
 282                 /* parse all the message ranges/sequences and set SELECTED */
 283                 for (msgnum = 0; msgnum < msgp; msgnum++)
 284                         if (!m_convert(mp, msgs[msgnum]))
 285                                 done(1);
 286                 seq_setprev(mp);  /* set the previous sequence */
 287         }
 288
 289         if (filter && access(filter, R_OK) == NOTOK)
 290                 adios(filter, "unable to read");
 291
 292         /*
 293         ** Open form (component) file.
 294         */
 295         if (digest) {
 296                 if (issue == 0) {
 297                         snprintf(buf, sizeof(buf), IFORMAT, digest);
 298                         if (volume == 0 && (cp = context_find(buf))
 299                                         && ((issue = atoi(cp)) < 0))
 300                                 issue = 0;
 301                         issue++;
 302                 }
 303                 if (volume == 0)
 304                         snprintf(buf, sizeof(buf), VFORMAT, digest);
 305                 if ((cp = context_find(buf)) == NULL ||
 306                                 (volume = atoi(cp)) <= 0)
 307                         volume = 1;
 308                 if (!form)
 309                         form = digestcomps;
 310                 in = build_form(form, digest, volume, issue);
 311         } else
 312                 in = open_form(&form, forwcomps);
 313
 314         if ((out = creat(drft, m_gmprot())) == NOTOK)
 315                 adios(drft, "unable to create");
 316
 317         /*
 318         ** copy the components into the draft
 319         */
 320         cpydata(in, out, form, drft);
 321         close(in);
 322
 323         if (file) {
 324                 /* just copy the file into the draft */
 325                 if ((in = open(file, O_RDONLY)) == NOTOK)
 326                         adios(file, "unable to open");
 327                 cpydata(in, out, file, drft);
 328                 close(in);
 329                 close(out);
 330         } else {
 331                 /*
 332                 ** If filter file is defined, then format the
 333                 ** messages into the draft using mhlproc.
 334                 */
 335                 if (filter)
 336                         mhl_draft(out, digest, volume, issue, drft, filter,
 337                                         dashstuff);
 338                 else if (mime)
 339                         copy_mime_draft(out);
 340                 else
 341                         copy_draft(out, digest, drft, volume, issue,
 342                                         dashstuff);
 343                 close(out);
 344
 345                 if (digest) {
 346                         snprintf(buf, sizeof(buf), IFORMAT, digest);
 347                         snprintf(value, sizeof(value), "%d", issue);
 348                         context_replace(buf, getcpy(value));
 349                         snprintf(buf, sizeof(buf), VFORMAT, digest);
 350                         snprintf(value, sizeof(value), "%d", volume);
 351                         context_replace(buf, getcpy(value));
 352                 }
 353
 354                 context_replace(pfolder, folder);  /* update current folder */
 355                 seq_setcur(mp, mp->lowsel);  /* update current message */
 356                 seq_save(mp);  /* synchronize sequences */
 357                 context_save();  /* save the context file */
 358         }
 359
 360         if (nwhat)
 361                 done(0);
 362         what_now(ed, nedit, NOUSE, drft, NULL, 0, mp,
 363                 anot ? "Forwarded" : NULL, inplace, cwd);
 364         done(1);
 365         return 1;
 366 }
 367
 368
 369 /*
 370 ** Filter the messages you are forwarding, into the
 371 ** draft calling the mhlproc, and reading its output
 372 ** from a pipe.
 373 */
 374
 375 static void
 376 mhl_draft(int out, char *digest, int volume, int issue,
 377         char *file, char *filter, int dashstuff)
 378 {
 379         pid_t child_id;
 380         int i, msgnum, pd[2];
 381         char *vec[MAXARGS];
 382         char buf1[BUFSIZ];
 383         char buf2[BUFSIZ];
 384
 385         if (pipe(pd) == NOTOK)
 386                 adios("pipe", "unable to create");
 387
 388         vec[0] = r1bindex(mhlproc, '/');
 389
 390         for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 391                 sleep(5);
 392         switch (child_id) {
 393                 case NOTOK:
 394                         adios("fork", "unable to");
 395
 396                 case OK:
 397                         close(pd[0]);
 398                         dup2(pd[1], 1);
 399                         close(pd[1]);
 400
 401                         i = 1;
 402                         vec[i++] = "-forwall";
 403                         vec[i++] = "-form";
 404                         vec[i++] = filter;
 405
 406                         if (digest) {
 407                                 vec[i++] = "-digest";
 408                                 vec[i++] = digest;
 409                                 vec[i++] = "-issue";
 410                                 snprintf(buf1, sizeof(buf1), "%d", issue);
 411                                 vec[i++] = buf1;
 412                                 vec[i++] = "-volume";
 413                                 snprintf(buf2, sizeof(buf2), "%d", volume);
 414                                 vec[i++] = buf2;
 415                         }
 416
 417                         /*
 418                         ** Are we dashstuffing (quoting) the lines that begin
 419                         ** with `-'.  We use the mhl default (don't add any
 420                         ** flag) unless the user has specified a specific flag.
 421                         */
 422                         if (dashstuff > 0)
 423                                 vec[i++] = "-dashstuffing";
 424                         else if (dashstuff < 0)
 425                                 vec[i++] = "-nodashstuffing";
 426
 427                         if (mp->numsel >= MAXARGS - i)
 428                                 adios(NULL, "more than %d messages for %s exec", MAXARGS - i, vec[0]);
 429
 430                         /*
 431                         ** Now add the message names to filter.  We can only
 432                         ** handle about 995 messages (because vec is fixed
 433                         ** size), but that should be plenty.
 434                         */
 435                         for (msgnum = mp->lowsel;
 436                                         msgnum <= mp->hghsel && i < sizeof(vec) - 1;
 437                                         msgnum++)
 438                                 if (is_selected(mp, msgnum))
 439                                         vec[i++] = getcpy(m_name(msgnum));
 440                         vec[i] = NULL;
 441
 442                         execvp(mhlproc, vec);
 443                         fprintf(stderr, "unable to exec ");
 444                         perror(mhlproc);
 445                         _exit(-1);
 446
 447                 default:
 448                         close(pd[1]);
 449                         cpydata(pd[0], out, vec[0], file);
 450                         close(pd[0]);
 451                         pidXwait(child_id, mhlproc);
 452                         break;
 453         }
 454 }
 455
 456
 457 /*
 458 ** Copy the messages into the draft.  The messages are
 459 ** not filtered through the mhlproc.  Do dashstuffing if
 460 ** necessary.
 461 */
 462
 463 static void
 464 copy_draft(int out, char *digest, char *file, int volume, int issue,
 465                 int dashstuff)
 466 {
 467         int fd,i, msgcnt, msgnum;
 468         int len, buflen;
 469         register char *bp, *msgnam;
 470         char buffer[BUFSIZ];
 471
 472         msgcnt = 1;
 473         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 474                 if (is_selected(mp, msgnum)) {
 475                         if (digest) {
 476                                 strncpy(buffer, msgnum == mp->lowsel ?
 477                                         delim3 : delim4, sizeof(buffer));
 478                         } else {
 479                                 /* Get buffer ready to go */
 480                                 bp = buffer;
 481                                 buflen = sizeof(buffer);
 482
 483                                 strncpy(bp, "\n-------", buflen);
 484                                 len = strlen(bp);
 485                                 bp += len;
 486                                 buflen -= len;
 487
 488                                 if (msgnum == mp->lowsel) {
 489                                         snprintf(bp, buflen, " Forwarded Message%s", mp->numsel > 1 ? "s" : "");
 490                                 } else {
 491                                         snprintf(bp, buflen, " Message %d", msgcnt);
 492                                 }
 493                                 len = strlen(bp);
 494                                 bp += len;
 495                                 buflen -= len;
 496
 497                                 strncpy(bp, "\n\n", buflen);
 498                         }
 499                         write(out, buffer, strlen(buffer));
 500
 501                         if ((fd = open(msgnam = m_name (msgnum), O_RDONLY))
 502                                         == NOTOK) {
 503                                 admonish(msgnam, "unable to read message");
 504                                 continue;
 505                         }
 506
 507                         /*
 508                         ** Copy the message.  Add RFC934 quoting (dashstuffing)
 509                         ** unless given the -nodashstuffing flag.
 510                         */
 511                         if (dashstuff >= 0)
 512                                 cpydgst(fd, out, msgnam, file);
 513                         else
 514                                 cpydata(fd, out, msgnam, file);
 515
 516                         close(fd);
 517                         msgcnt++;
 518                 }
 519         }
 520
 521         if (digest) {
 522                 strncpy(buffer, delim4, sizeof(buffer));
 523         } else {
 524                 snprintf(buffer, sizeof(buffer),
 525                                 "\n------- End of Forwarded Message%s\n\n",
 526                                 mp->numsel > 1 ? "s" : "");
 527         }
 528         write(out, buffer, strlen(buffer));
 529
 530         if (digest) {
 531                 snprintf(buffer, sizeof(buffer),
 532                                 "End of %s Digest [Volume %d Issue %d]\n",
 533                                 digest, volume, issue);
 534                 i = strlen(buffer);
 535                 for (bp = buffer + i; i > 1; i--)
 536                         *bp++ = '*';
 537                 *bp++ = '\n';
 538                 *bp = 0;
 539                 write(out, buffer, strlen(buffer));
 540         }
 541 }
 542
 543
 544 /*
 545 ** Create a mhbuild composition file for forwarding message.
 546 */
 547
 548 static void
 549 copy_mime_draft(int out)
 550 {
 551         int msgnum;
 552         char buffer[BUFSIZ];
 553
 554         snprintf(buffer, sizeof(buffer), "#forw [forwarded message%s] +%s",
 555                         mp->numsel == 1 ? "" : "s", mp->foldpath);
 556         write(out, buffer, strlen(buffer));
 557         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 558                 if (is_selected(mp, msgnum)) {
 559                         snprintf(buffer, sizeof(buffer), " %s",
 560                                         m_name(msgnum));
 561                         write(out, buffer, strlen(buffer));
 562                 }
 563         write(out, "\n", 1);
 564 }
 565
 566
 567 static int
 568 build_form(char *form, char *digest, int volume, int issue)
 569 {
 570         int in;
 571         int fmtsize;
 572         register char *nfs;
 573         char *line, tmpfil[BUFSIZ];
 574         FILE *tmp;
 575         register struct comp *cptr;
 576         struct format *fmt;
 577         int dat[5];
 578         char *cp = NULL;
 579
 580         /* Get new format string */
 581         nfs = new_fs(form, NULL, NULL);
 582         fmtsize = strlen(nfs) + 256;
 583
 584         /* Compile format string */
 585         fmt_compile(nfs, &fmt);
 586
 587         FINDCOMP(cptr, "digest");
 588         if (cptr)
 589                 cptr->c_text = digest;
 590         FINDCOMP(cptr, "date");
 591         if (cptr)
 592                 cptr->c_text = getcpy(dtimenow(0));
 593
 594         dat[0] = issue;
 595         dat[1] = volume;
 596         dat[2] = 0;
 597         dat[3] = fmtsize;
 598         dat[4] = 0;
 599
 600         cp = m_mktemp2(NULL, invo_name, NULL, &tmp);
 601         if (cp == NULL) adios("forw", "unable to create temporary file");
 602         strncpy(tmpfil, cp, sizeof(tmpfil));
 603         unlink(tmpfil);
 604         if ((in = dup(fileno(tmp))) == NOTOK)
 605                 adios("dup", "unable to");
 606
 607         line = mh_xmalloc((unsigned) fmtsize);
 608         fmt_scan(fmt, line, fmtsize, dat);
 609         fputs(line, tmp);
 610         free(line);
 611         if (fclose(tmp))
 612                 adios(tmpfil, "error writing");
 613
 614         lseek(in, (off_t) 0, SEEK_SET);
 615         return in;
 616 }