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 = mhbasename(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",
 147                                                         argp[-2]);
 148                                 nedit = 0;
 149                                 continue;
 150                         case NEDITSW:
 151                                 nedit++;
 152                                 continue;
 153
 154                         case WHATSW:
 155                                 if (!(whatnowproc = *argp++) ||
 156                                                 *whatnowproc == '-')
 157                                         adios(NULL, "missing argument to %s",
 158                                                         argp[-2]);
 159                                 nwhat = 0;
 160                                 continue;
 161 #ifdef MHE
 162                         case BILDSW:
 163                                 buildsw++;  /* fall... */
 164 #endif /* MHE */
 165                         case NWHATSW:
 166                                 nwhat++;
 167                                 continue;
 168
 169                         case FILESW:
 170                                 if (file)
 171                                         adios(NULL, "only one file at a time!");
 172                                 if (!(cp = *argp++) || *cp == '-')
 173                                         adios(NULL, "missing argument to %s",
 174                                                         argp[-2]);
 175                                 file = getcpy(expanddir(cp));
 176                                 continue;
 177                         case FILTSW:
 178                                 if (!(cp = *argp++) || *cp == '-')
 179                                         adios(NULL, "missing argument to %s",
 180                                                         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",
 187                                                         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 (!(digest = *argp++) || *digest == '-')
 214                                         adios(NULL, "missing argument to %s",
 215                                                         argp[-2]);
 216                                 mime = 0;
 217                                 continue;
 218                         case ISSUESW:
 219                                 if (!(cp = *argp++) || *cp == '-')
 220                                         adios(NULL, "missing argument to %s",
 221                                                         argp[-2]);
 222                                 if ((issue = atoi(cp)) < 1)
 223                                         adios(NULL, "bad argument %s %s",
 224                                                         argp[-2], cp);
 225                                 continue;
 226                         case VOLUMSW:
 227                                 if (!(cp = *argp++) || *cp == '-')
 228                                         adios(NULL, "missing argument to %s",
 229                                                         argp[-2]);
 230                                 if ((volume = atoi(cp)) < 1)
 231                                         adios(NULL, "bad argument %s %s",
 232                                                         argp[-2], cp);
 233                                 continue;
 234
 235                         case BITSTUFFSW:
 236                                 dashstuff = 1;  /* trinary logic */
 237                                 continue;
 238                         case NBITSTUFFSW:
 239                                 dashstuff = -1;  /* trinary logic */
 240                                 continue;
 241                         }
 242                 }
 243                 if (*cp == '+' || *cp == '@') {
 244                         if (folder)
 245                                 adios(NULL, "only one folder at a time!");
 246                         else
 247                                 folder = getcpy(expandfol(cp));
 248                 } else {
 249                         msgs[msgp++] = cp;
 250                 }
 251         }
 252
 253         cwd = getcpy(pwd());
 254
 255         if (file && (msgp || folder))
 256                 adios(NULL, "can't mix files and folders/msgs");
 257
 258 #ifdef MHE
 259         strncpy(drft, buildsw ? toabsdir("draft")
 260                 : m_draft("new"), sizeof(drft));
 261 #else
 262         strncpy(drft, m_draft("new"), sizeof(drft));
 263 #endif /* MHE */
 264
 265         if (file) {
 266                 /*
 267                 ** Forwarding a file.
 268                 */
 269                 anot = 0;  /* don't want to annotate a file */
 270         } else {
 271                 /*
 272                 ** Forwarding a message.
 273                 */
 274                 if (!msgp)
 275                         msgs[msgp++] = "cur";
 276                 if (!folder)
 277                         folder = getcurfol();
 278                 maildir = toabsdir(folder);
 279
 280                 if (chdir(maildir) == NOTOK)
 281                         adios(maildir, "unable to change directory to");
 282
 283                 /* read folder and create message structure */
 284                 if (!(mp = folder_read(folder)))
 285                         adios(NULL, "unable to read folder %s", folder);
 286
 287                 /* check for empty folder */
 288                 if (mp->nummsg == 0)
 289                         adios(NULL, "no messages in %s", folder);
 290
 291                 /* parse all the message ranges/sequences and set SELECTED */
 292                 for (msgnum = 0; msgnum < msgp; msgnum++)
 293                         if (!m_convert(mp, msgs[msgnum]))
 294                                 done(1);
 295                 seq_setprev(mp);  /* set the previous sequence */
 296         }
 297
 298         if (filter && access(filter, R_OK) == NOTOK)
 299                 adios(filter, "unable to read");
 300
 301         /*
 302         ** Open form (component) file.
 303         */
 304         if (digest) {
 305                 if (issue == 0) {
 306                         snprintf(buf, sizeof(buf), IFORMAT, digest);
 307                         if (volume == 0 && (cp = context_find(buf))
 308                                         && ((issue = atoi(cp)) < 0))
 309                                 issue = 0;
 310                         issue++;
 311                 }
 312                 if (volume == 0)
 313                         snprintf(buf, sizeof(buf), VFORMAT, digest);
 314                 if ((cp = context_find(buf)) == NULL ||
 315                                 (volume = atoi(cp)) <= 0)
 316                         volume = 1;
 317                 if (!form)
 318                         form = digestcomps;
 319                 in = build_form(form, digest, volume, issue);
 320         } else
 321                 in = open_form(&form, forwcomps);
 322
 323         if ((out = creat(drft, m_gmprot())) == NOTOK)
 324                 adios(drft, "unable to create");
 325
 326         /*
 327         ** copy the components into the draft
 328         */
 329         cpydata(in, out, form, drft);
 330         close(in);
 331
 332         if (file) {
 333                 /* just copy the file into the draft */
 334                 if ((in = open(file, O_RDONLY)) == NOTOK)
 335                         adios(file, "unable to open");
 336                 cpydata(in, out, file, drft);
 337                 close(in);
 338                 close(out);
 339         } else {
 340                 /*
 341                 ** If filter file is defined, then format the
 342                 ** messages into the draft using mhlproc.
 343                 */
 344                 if (filter)
 345                         mhl_draft(out, digest, volume, issue, drft, filter,
 346                                         dashstuff);
 347                 else if (mime)
 348                         copy_mime_draft(out);
 349                 else
 350                         copy_draft(out, digest, drft, volume, issue,
 351                                         dashstuff);
 352                 close(out);
 353
 354                 if (digest) {
 355                         snprintf(buf, sizeof(buf), IFORMAT, digest);
 356                         snprintf(value, sizeof(value), "%d", issue);
 357                         context_replace(buf, getcpy(value));
 358                         snprintf(buf, sizeof(buf), VFORMAT, digest);
 359                         snprintf(value, sizeof(value), "%d", volume);
 360                         context_replace(buf, getcpy(value));
 361                 }
 362
 363                 context_replace(curfolder, folder); /* update current folder */
 364                 seq_setcur(mp, mp->lowsel);  /* update current message */
 365                 seq_save(mp);  /* synchronize sequences */
 366                 context_save();  /* save the context file */
 367         }
 368
 369         if (nwhat)
 370                 done(0);
 371         what_now(ed, nedit, NOUSE, drft, NULL, 0, mp,
 372                 anot ? "Forwarded" : NULL, inplace, cwd);
 373         done(1);
 374         return 1;
 375 }
 376
 377
 378 /*
 379 ** Filter the messages you are forwarding, into the
 380 ** draft calling the mhlproc, and reading its output
 381 ** from a pipe.
 382 */
 383
 384 static void
 385 mhl_draft(int out, char *digest, int volume, int issue,
 386         char *file, char *filter, int dashstuff)
 387 {
 388         pid_t child_id;
 389         int i, msgnum, pd[2];
 390         char *vec[MAXARGS];
 391         char buf1[BUFSIZ];
 392         char buf2[BUFSIZ];
 393
 394         if (pipe(pd) == NOTOK)
 395                 adios("pipe", "unable to create");
 396
 397         vec[0] = mhbasename(mhlproc);
 398
 399         for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 400                 sleep(5);
 401         switch (child_id) {
 402         case NOTOK:
 403                 adios("fork", "unable to");
 404
 405         case OK:
 406                 close(pd[0]);
 407                 dup2(pd[1], 1);
 408                 close(pd[1]);
 409
 410                 i = 1;
 411                 vec[i++] = "-forwall";
 412                 vec[i++] = "-form";
 413                 vec[i++] = filter;
 414
 415                 if (digest) {
 416                         vec[i++] = "-digest";
 417                         vec[i++] = digest;
 418                         vec[i++] = "-issue";
 419                         snprintf(buf1, sizeof(buf1), "%d", issue);
 420                         vec[i++] = buf1;
 421                         vec[i++] = "-volume";
 422                         snprintf(buf2, sizeof(buf2), "%d", volume);
 423                         vec[i++] = buf2;
 424                 }
 425
 426                 /*
 427                 ** Are we dashstuffing (quoting) the lines that begin
 428                 ** with `-'.  We use the mhl default (don't add any
 429                 ** flag) unless the user has specified a specific flag.
 430                 */
 431                 if (dashstuff > 0)
 432                         vec[i++] = "-dashstuffing";
 433                 else if (dashstuff < 0)
 434                         vec[i++] = "-nodashstuffing";
 435
 436                 if (mp->numsel >= MAXARGS - i)
 437                         adios(NULL, "more than %d messages for %s exec",
 438                                         MAXARGS - i, vec[0]);
 439
 440                 /*
 441                 ** Now add the message names to filter.  We can only
 442                 ** handle about 995 messages (because vec is fixed
 443                 ** size), but that should be plenty.
 444                 */
 445                 for (msgnum = mp->lowsel;
 446                                 msgnum <= mp->hghsel && i < sizeof(vec) - 1;
 447                                 msgnum++)
 448                         if (is_selected(mp, msgnum))
 449                                 vec[i++] = getcpy(m_name(msgnum));
 450                 vec[i] = NULL;
 451
 452                 execvp(mhlproc, vec);
 453                 fprintf(stderr, "unable to exec ");
 454                 perror(mhlproc);
 455                 _exit(-1);
 456
 457         default:
 458                 close(pd[1]);
 459                 cpydata(pd[0], out, vec[0], file);
 460                 close(pd[0]);
 461                 pidXwait(child_id, mhlproc);
 462                 break;
 463         }
 464 }
 465
 466
 467 /*
 468 ** Copy the messages into the draft.  The messages are
 469 ** not filtered through the mhlproc.  Do dashstuffing if
 470 ** necessary.
 471 */
 472
 473 static void
 474 copy_draft(int out, char *digest, char *file, int volume, int issue,
 475                 int dashstuff)
 476 {
 477         int fd,i, msgcnt, msgnum;
 478         int len, buflen;
 479         register char *bp, *msgnam;
 480         char buffer[BUFSIZ];
 481
 482         msgcnt = 1;
 483         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 484                 if (is_selected(mp, msgnum)) {
 485                         if (digest) {
 486                                 strncpy(buffer, msgnum == mp->lowsel ?
 487                                         delim3 : delim4, sizeof(buffer));
 488                         } else {
 489                                 /* Get buffer ready to go */
 490                                 bp = buffer;
 491                                 buflen = sizeof(buffer);
 492
 493                                 strncpy(bp, "\n-------", buflen);
 494                                 len = strlen(bp);
 495                                 bp += len;
 496                                 buflen -= len;
 497
 498                                 if (msgnum == mp->lowsel) {
 499                                         snprintf(bp, buflen, " Forwarded Message%s", mp->numsel > 1 ? "s" : "");
 500                                 } else {
 501                                         snprintf(bp, buflen, " Message %d", msgcnt);
 502                                 }
 503                                 len = strlen(bp);
 504                                 bp += len;
 505                                 buflen -= len;
 506
 507                                 strncpy(bp, "\n\n", buflen);
 508                         }
 509                         write(out, buffer, strlen(buffer));
 510
 511                         if ((fd = open(msgnam = m_name (msgnum), O_RDONLY))
 512                                         == NOTOK) {
 513                                 admonish(msgnam, "unable to read message");
 514                                 continue;
 515                         }
 516
 517                         /*
 518                         ** Copy the message.  Add RFC934 quoting (dashstuffing)
 519                         ** unless given the -nodashstuffing flag.
 520                         */
 521                         if (dashstuff >= 0)
 522                                 cpydgst(fd, out, msgnam, file);
 523                         else
 524                                 cpydata(fd, out, msgnam, file);
 525
 526                         close(fd);
 527                         msgcnt++;
 528                 }
 529         }
 530
 531         if (digest) {
 532                 strncpy(buffer, delim4, sizeof(buffer));
 533         } else {
 534                 snprintf(buffer, sizeof(buffer),
 535                                 "\n------- End of Forwarded Message%s\n\n",
 536                                 mp->numsel > 1 ? "s" : "");
 537         }
 538         write(out, buffer, strlen(buffer));
 539
 540         if (digest) {
 541                 snprintf(buffer, sizeof(buffer),
 542                                 "End of %s Digest [Volume %d Issue %d]\n",
 543                                 digest, volume, issue);
 544                 i = strlen(buffer);
 545                 for (bp = buffer + i; i > 1; i--)
 546                         *bp++ = '*';
 547                 *bp++ = '\n';
 548                 *bp = 0;
 549                 write(out, buffer, strlen(buffer));
 550         }
 551 }
 552
 553
 554 /*
 555 ** Create a mhbuild composition file for forwarding message.
 556 */
 557
 558 static void
 559 copy_mime_draft(int out)
 560 {
 561         int msgnum;
 562         char buffer[BUFSIZ];
 563
 564         snprintf(buffer, sizeof(buffer), "#forw [forwarded message%s] +%s",
 565                         mp->numsel == 1 ? "" : "s", mp->foldpath);
 566         write(out, buffer, strlen(buffer));
 567         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 568                 if (is_selected(mp, msgnum)) {
 569                         snprintf(buffer, sizeof(buffer), " %s",
 570                                         m_name(msgnum));
 571                         write(out, buffer, strlen(buffer));
 572                 }
 573         write(out, "\n", 1);
 574 }
 575
 576
 577 static int
 578 build_form(char *form, char *digest, int volume, int issue)
 579 {
 580         int in;
 581         int fmtsize;
 582         register char *nfs;
 583         char *line, tmpfil[BUFSIZ];
 584         FILE *tmp;
 585         register struct comp *cptr;
 586         struct format *fmt;
 587         int dat[5];
 588         char *cp = NULL;
 589
 590         /* Get new format string */
 591         nfs = new_fs(form, NULL, NULL);
 592         fmtsize = strlen(nfs) + 256;
 593
 594         /* Compile format string */
 595         fmt_compile(nfs, &fmt);
 596
 597         FINDCOMP(cptr, "digest");
 598         if (cptr)
 599                 cptr->c_text = digest;
 600         FINDCOMP(cptr, "date");
 601         if (cptr)
 602                 cptr->c_text = getcpy(dtimenow(0));
 603
 604         dat[0] = issue;
 605         dat[1] = volume;
 606         dat[2] = 0;
 607         dat[3] = fmtsize;
 608         dat[4] = 0;
 609
 610         cp = m_mktemp2(NULL, invo_name, NULL, &tmp);
 611         if (cp == NULL) adios("forw", "unable to create temporary file");
 612         strncpy(tmpfil, cp, sizeof(tmpfil));
 613         unlink(tmpfil);
 614         if ((in = dup(fileno(tmp))) == NOTOK)
 615                 adios("dup", "unable to");
 616
 617         line = mh_xmalloc((unsigned) fmtsize);
 618         fmt_scan(fmt, line, fmtsize, dat);
 619         fputs(line, tmp);
 620         free(line);
 621         if (fclose(tmp))
 622                 adios(tmpfil, "error writing");
 623
 624         lseek(in, (off_t) 0, SEEK_SET);
 625         return in;
 626 }