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